Kbb 34" mono build

[kfxguy]

I've been wanting to build a mono for a little tougher water running. I also want to see how fast I can make one go. When I saw this hull I fell in love with its sleek looks. So I ordered one. Few days later it can in and I was super impressed with the quality of it. Now on to the goodies

Here's my components. I have everything except for the esc, it's on the way to me. Ordered it tonight

Motor: lehner 2260 (and after I see how fast we can go, I just bought a brand new 1527 1500kv from the ose store to make it more for sport running)
Esc: mgm 25035-3 x2
Servo: savox 0231
Collet: mbp billet
Flex: 3/16 aeromarine
Hardware: 3/16 strut with carbon flood tube and separate rudder

http://i218.photobucket.com/albums/cc243/ltzguy/EB360472-0E7E-4CDE-8AB6-7987D357ABCA.jpg (http://s218.photobucket.com/user/ltzguy/media/EB360472-0E7E-4CDE-8AB6-7987D357ABCA.jpg.html)

[kfxguy]

First thing is first, we need an inlay done....

http://i218.photobucket.com/albums/cc243/ltzguy/C6052632-EEF0-4EC4-ABCE-70EEB22AC1FA.jpg (http://s218.photobucket.com/user/ltzguy/media/C6052632-EEF0-4EC4-ABCE-70EEB22AC1FA.jpg.html)

[Roy Van De Sande]

Like every build I have seen from you, looks great!

[kfxguy]

Like every build I have seen from you, looks great!

Thanks!

[kfxguy]

I decided I eanteda flood tube with a strut because I want height to be adjustable too and not just angle. Head on over to my lathe and make a end cap for the carbon tube.

http://i218.photobucket.com/albums/cc243/ltzguy/DCEC8B9E-B474-4E0C-B57A-E1D969BD5AD8.jpg (http://s218.photobucket.com/user/ltzguy/media/DCEC8B9E-B474-4E0C-B57A-E1D969BD5AD8.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/56498C94-0570-41C5-AB96-29318EE1ADF7_1.jpg (http://s218.photobucket.com/user/ltzguy/media/56498C94-0570-41C5-AB96-29318EE1ADF7_1.jpg.html)


The grooves are for the epoxy to grab better. Here it is assembled.

http://i218.photobucket.com/albums/cc243/ltzguy/99CB827F-E0E9-422D-AEFB-33708AD8CE9B.jpg (http://s218.photobucket.com/user/ltzguy/media/99CB827F-E0E9-422D-AEFB-33708AD8CE9B.jpg.html)

[kfxguy]

Here's the 1527 that will end up in it.

http://i218.photobucket.com/albums/cc243/ltzguy/F9B823EF-D472-45A9-9C98-A75DB329DCC6.jpg (http://s218.photobucket.com/user/ltzguy/media/F9B823EF-D472-45A9-9C98-A75DB329DCC6.jpg.html)

And the lehner going in it for now the lehner is actually for my shocker but that will be a whole before I get to that.


http://i218.photobucket.com/albums/cc243/ltzguy/0E3EE08D-5148-4793-8619-31EFEF5A0F24_1.jpg (http://s218.photobucket.com/user/ltzguy/media/0E3EE08D-5148-4793-8619-31EFEF5A0F24_1.jpg.html)

Layout idea.


http://i218.photobucket.com/albums/cc243/ltzguy/DE8674A6-B73E-4BEA-AD55-60C255208A6A_1.jpg (http://s218.photobucket.com/user/ltzguy/media/DE8674A6-B73E-4BEA-AD55-60C255208A6A_1.jpg.html)

[kfxguy]

Flood tube and aligning the motor

http://i218.photobucket.com/albums/cc243/ltzguy/9F9ED077-52A6-4A52-B9BF-2C9A9DA37FB6.jpg ([URL=http://s218.photobucket.com/user/ltzguy/media/CD7D709A-7644-464F-8E45-193D26F7240E.jpg.html]http://i218.photobucket.com/albums/cc243/ltzguy/CD7D709A-7644-464F-8E45-193D26F7240E.jpg)"]http://i218.photobucket.com/albums/cc243/ltzguy/878EE9CB-264A-4DAC-9CF4-985BC8DEF271.jpg (http://s218.photobucket.com/user/ltzguy/media/9F9ED077-52A6-4A52-B9BF-2C9A9DA37FB6.jp


[URL="[URL=http://s218.photobucket.com/user/ltzguy/media/878EE9CB-264A-4DAC-9CF4-985BC8DEF271.jpg.html)"][URL=http://s218.photobucket.com/user/ltzguy/media/878EE9CB-264A-4DAC-9CF4-

[kfxguy]

Time to mount the motor using my old trusty mix of jb weld and graphite powder to darken it.

http://i218.photobucket.com/albums/cc243/ltzguy/4B26ECC9-006E-48E1-8149-451C6E9B676B.jpg (http://s218.photobucket.com/user/ltzguy/media/4B26ECC9-006E-48E1-8149-451C6E9B676B.jpg.html)

And this is where I'm at right now. Waiting on the esc before I move forward to make sure it all fits the way I want.

http://i218.photobucket.com/albums/cc243/ltzguy/E4DCB37E-64A0-4D2C-9909-0B10C5F32CA3.jpg (http://s218.photobucket.com/user/ltzguy/media/E4DCB37E-64A0-4D2C-9909-0B10C5F32CA3.jpg.html)

[Roy Van De Sande]

You are going quick :) Keep it going!
Where did you get the carbon tubing?
Thanks!
Roy

[kfxguy]

You are going quick :) Keep it going!
Where did you get the carbon tubing?
Thanks!
Roy

I have a few things i can do but i'm waiting on the esc to make the mount for it. I can work on the rear tho. I'm going to make a support for the front of the flood tube, then make a plate that goes over the flood tube that the servo, bec and receiver mount to. then a cover to go over those components. I have the software now to run my cnc router so i'll need to get up to speed on that here soon. That will help with cutting things out for sure. I got the tube from ebay, there a seller who specializes in it...its very nice tube. I'll get the seller for you sometime today.

[Roy Van De Sande]

I'll get the seller for you sometime today.

That would be nice! Thank you!

[Make-a-Wake]

Sexy gal there..............6s2p?

[rickwess]

What are you using to support the flooded tube to get get the angle lined up? I see some shavings.

[kfxguy]

What are you using to support the flooded tube to get get the angle lined up? I see some shavings.

The flood tube is mounted and aligned perfectly. You can't tell but the tube coming out the flood tube is slightly angled up. It will have a little triangle of carbon for support made of 3mm material. I am aware that the stuffing tube needs a bend in it and it does inside the flood tube. The shavings are fiberglass and carbon from when I was tweaking the hole. I guess I didn't get all the shavings out at that point.

[kfxguy]

Sexy gal there..............6s2p?

To begin I will run it on 6s but I plan on pushing it up to 8s. I bought both motors with 8mm shafts to take the additional rpm. The lehner is in the 1600kv range. I plan on seeing just how fast I can go with this hull. Everything is purposely being mounted low for a low cg in an effort to help stability.

[Roy Van De Sande]

When you have run both motors you could compare them. I have had a lehner 3080/9 in a 45' mono on 12s2p but I didn't like it at all.
I changed back to my old TP5850 600kv. Almost a full kilogram lighter but the TP has also way more torque and stays much cooler than the
lehner. I run all my boats in oval racing, maybe this is a reason why the 800 dollalr lehner didn't performed the way I had expected. People often
think lehner are some kind of wonder motors but they are not. They are just high quality 2 pole motors with all the advantages and disadvantages of
the 2 pole design. In my opinion a 4+ pole motor is the better choice for almost 90% of all people out here. I am very curious to see what the limits are of your 34' mono! Keep us posted!

[Make-a-Wake]

To begin I will run it on 6s but I plan on pushing it up to 8s. I bought both motors with 8mm shafts to take the additional rpm. The lehner is in the 1600kv range. I plan on seeing just how fast I can go with this hull. Everything is purposely being mounted low for a low cg in an effort to help stability.

Forgot you were the high rpm guy http://www.websmileys.com/sm/music/musik39.gif

You think the Neu will outperform the Lehner?

[kfxguy]

When you have run both motors you could compare them. I have had a lehner 3080/9 in a 45' mono on 12s2p but I didn't like it at all.
I changed back to my old TP5850 600kv. Almost a full kilogram lighter but the TP has also way more torque and stays much cooler than the
lehner. I run all my boats in oval racing, maybe this is a reason why the 800 dollalr lehner didn't performed the way I had expected. People often
think lehner are some kind of wonder motors but they are not. They are just high quality 2 pole motors with all the advantages and disadvantages of
the 2 pole design. In my opinion a 4+ pole motor is the better choice for almost 90% of all people out here. I am very curious to see what the limits are of your 34' mono! Keep us posted!

I'll definately post videos a gps speeds as I go...

[kfxguy]

Forgot you were the high rpm guy http://www.websmileys.com/sm/music/musik39.gif

You think the Neu will outperform the Lehner?


I dunno. I've had plenty of neu motors and I like them but never run a lehner before but I know they are a powerful motor. The 2260 I have weighs a bit more than the 1527 so I'd be very surprised if the 1527 was more powerful. The cool thing about this is I'll be able to swap between the two very easily. I'll definatly have some comparison data but I'm not so sure that it would even be fair as the lehner is a higher kv and kv is rated under a load. I may only need 7s with the lehner to do what I want and 8s on the neu. I guess I'll find out soon. I'll be in the shop tonight working on it along with a cheetah and a Rivercat.

[Make-a-Wake]

I'm guessin that 6s2p for the Lehner and 8s2p for the Neu would be real close, looking forward to your data, that will be very interesting!

[kfxguy]

I'm guessin that 6s2p for the Lehner and 8s2p for the Neu would be real close, looking forward to your data, that will be very interesting!

Your probably right. The neu is really for a sport setup when I yank the lehner. I do plan on 8s with the lehner in my shocker tho! :buttrock:


On a side note....I will be doing some data logs on it so I'll be able to compare that too.

[Local Boy]

Very nice Brutha!

I always enjoy following your builds...Very nice work...

Thanks for sharing...

Aloha

[Stevesc]

I dunno. I've had plenty of neu motors and I like them but never run a lehner before but I know they are a powerful motor. The 2260 I have weighs a bit more than the 1527 so I'd be very surprised if the 1527 was more powerful. The cool thing about this is I'll be able to swap between the two very easily. I'll definatly have some comparison data but I'm not so sure that it would even be fair as the lehner is a higher kv and kv is rated under a load. I may only need 7s with the lehner to do what I want and 8s on the neu. I guess I'll find out soon. I'll be in the shop tonight working on it along with a cheetah and a Rivercat.


Don't forget to include the Daytona.

[Make-a-Wake]

Is this hull just under the limit for P mono if you chose to race it sometime?

[kfxguy]

Don't forget to include the Daytona.

Well I don't have a lake in my shop (wouldn't that be awesome lol) so there's not much to do to the Daytona except s/b some props (which I ordered two more that just shipped today). Lol

[kfxguy]

Is this hull just under the limit for P mono if you chose to race it sometime?

I'm not sure but in my last thread it was mentioned that it was legal for p mono.

[Fella1340]

looking good travis,looks like you wont be short of power with either motor! Builds looking nice so far, I hope the hull performs well at high speed for you, I'm guessing it should be good to go given where it came from. Nice to see something different coming out of the kfx build shed. Does this make it 5 different builds in progress now?

[kfxguy]

looking good travis,looks like you wont be short of power with either motor! Builds looking nice so far, I hope the hull performs well at high speed for you, I'm guessing it should be good to go given where it came from. Nice to see something different coming out of the kfx build shed. Does this make it 5 different builds in progress now?

I think so, cheetah, 2 rivercats, mono and a few more that I haven't started yet

[keithbradley]

When you have run both motors you could compare them. I have had a lehner 3080/9 in a 45' mono on 12s2p but I didn't like it at all.
I changed back to my old TP5850 600kv. Almost a full kilogram lighter but the TP has also way more torque and stays much cooler than the
lehner. I run all my boats in oval racing, maybe this is a reason why the 800 dollalr lehner didn't performed the way I had expected. People often
think lehner are some kind of wonder motors but they are not. They are just high quality 2 pole motors with all the advantages and disadvantages of
the 2 pole design. In my opinion a 4+ pole motor is the better choice for almost 90% of all people out here. I am very curious to see what the limits are of your 34' mono! Keep us posted!

Roy, have you ran any other Lehner motors? 3080/9 on 12s lipo is a 25k RPM setup...not exactly playing to the strength of the 2 pole LMT design. I can see with your setup why you would prefer the 4 pole motor, but you might change your mind if you were using motors at higher RPM. I'm sure you weren't impressed by the 3080/9 on 12s, but I can say from experience that a 3080/7 on 14s is in a completely different world.

Some data from Lehner:

The power increase is proportional to the rpm. Make sure there is good cooling.
Operating voltage x 2 = rpm x 2 = double power

Max power of the series 30xx motors:
3040 50000 rpm ca. 12 kW (at ŋ / Pmax)
3060 50000 rpm ca. 17 kW (at ŋ / Pmax)
3080 50000 rpm ca. 30 kW (at ŋ / Pmax)

OP: Great looking build so far!

[Spartanator]

I like!

[kfxguy]

I made the flood tube support.

http://i218.photobucket.com/albums/cc243/ltzguy/9BDB13AF-4F6F-4556-ABF0-CB9D771E5960.jpg (http://s218.photobucket.com/user/ltzguy/media/9BDB13AF-4F6F-4556-ABF0-CB9D771E5960.jpg.html)

And I had to lay some more carbon. What I plan on (tell me what you think) is I'm going to epoxy a plate over the whole big part of the flood tube. This plate will serve a few purposes. It will hit the flood tube, hide some wiring and cooling lines. It will also be the base for my servo, bec and receiver to mount on. Then I'll make a cover for the top of that. Yes? No?

This is 9"x 12 which will net me about 8x10 when I square it up

http://i218.photobucket.com/albums/cc243/ltzguy/FFCEA9A7-EFB5-428B-8227-F8E93833AD7B.jpg (http://s218.photobucket.com/user/ltzguy/media/FFCEA9A7-EFB5-428B-8227-F8E93833AD7B.jpg.html)



I also mocked up the strut and rudder to see what it will look like.

[keithbradley]

Where are the lipos going?

[kfxguy]

Where are the lipos going?

The trays will be next to the motor as low as I can get them. I'm trying to decide what epoxy I'm going to use to hold them in. In all my cats I have the trays wedged in between the tunnel and outer walls of the boat with epoxy going the whole length of them. In this it's going to have little tabs to space the trays up a tad altho I have a different idea that's harder and will take longer.

[kfxguy]

Here's the strut and rudder mocked up. I should be mounting them tomorrow night.

http://i218.photobucket.com/albums/cc243/ltzguy/C14EF533-2B36-4B07-B038-5F88F09EAFDE.jpg (http://s218.photobucket.com/user/ltzguy/media/C14EF533-2B36-4B07-B038-5F88F09EAFDE.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/127D549B-2532-408F-899A-9DAADB3AD1B7.jpg (http://s218.photobucket.com/user/ltzguy/media/127D549B-2532-408F-899A-9DAADB3AD1B7.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/BDAB3108-8539-41C4-93F1-752A635849AE.jpg (http://s218.photobucket.com/user/ltzguy/media/BDAB3108-8539-41C4-93F1-752A635849AE.jpg.html)

[Luck as a Constant]

The trays will be next to the motor as low as I can get them. I'm trying to decide what epoxy I'm going to use to hold them in. In all my cats I have the trays wedged in between the tunnel and outer walls of the boat with epoxy going the whole length of them. In this it's going to have little tabs to space the trays up a tad altho I have a different idea that's harder and will take longer.

I have a huge tube of silicone for gluing trays coming from Keith.
If you want, I can report back to you on how well it works.



Sent from my iPhone using Tapatalk

[kfxguy]

I have a huge tube of silicone for gluing trays coming from Keith.
If you want, I can report back to you on how well it works.



Sent from my iPhone using Tapatalk

Sounds good!

[Roy Van De Sande]

Roy, have you ran any other Lehner motors? 3080/9 on 12s lipo is a 25k RPM setup...not exactly playing to the strength of the 2 pole LMT design. I can see with your setup why you would prefer the 4 pole motor, but you might change your mind if you were using motors at higher RPM. I'm sure you weren't impressed by the 3080/9 on 12s, but I can say from experience that a 3080/7 on 14s is in a completely different world.

Some data from Lehner:

The power increase is proportional to the rpm. Make sure there is good cooling.
Operating voltage x 2 = rpm x 2 = double power

Max power of the series 30xx motors:
3040 50000 rpm ca. 12 kW (at ŋ / Pmax)
3060 50000 rpm ca. 17 kW (at ŋ / Pmax)
3080 50000 rpm ca. 30 kW (at ŋ / Pmax)

OP: Great looking build so far!

Hello Keith,

I have done these comparisments so far:

Lehner 1950 vs leopard 3674
Lehner 2260 vs TP4070
Lehner 2280 vs TP4070
Lehner 3040 vs TP5660
Lehner 3080 vs TP5850

So far I had these result: the lehners motors are always hotter than the TP/leopard motors after the same amount of time, at the same voltage, with the same prop.
The kv of the motors I compare are more or less the same under load to minimize the difference between the motors. The Lehners
draw statistically 10-15% more peak current, runtime drops with 10-20%. I have ran over 2000 tests with all the different motors so
the results are in my opinion real and good data. I am working with a good friend on a study about DC electric engines. We have
ran the tests in a boat but also just on a bench with equipment mounted to it to see how the different motors designs performed.

In the case of the lehner 3080/9. Yes I have tried other voltages. I have ran it up to 16s2p in my 45' mono. That is close to a 35K setup.
35K isn't a that much for a lehner but still for a lehner 3080, I think it is near the maximum to keep the current peaks down (<500A) if you
want to spin a decent prop. With a x465 octura It ran around 75mph but the runtime was limited to 2minutes and the current peaks were
around 400A. The temperature of the lehner was around 55-60°C with the standard lehner cooling jacket mounted. This would be around 140°F
to make it easy for you. MBP now sells a longer cooling jacket for lehner motors which will definitely bring the temperature down a bit. I have tested
the impact of a small/longer cooling jacket on a TP4070 in a bench test 3weeks ago. The difference between a 50mm cooling jacket and a 90mm cooling
jacket were over 30°C or 86°F. All cooling jackets were made of the same material at the university I do this study at, just shorter or longer. A stunning result. After this test I am convinced I could bring the temperature of the lehner 3080 down a bit.

Last winter I mounted my old TP5850 600kv back in the boat. I ran it last week on 14s2p with a 6717/3 prop. Speeds so far in 3 runs: 78,82 and 81mph.
The most important result for me was the runtime, 3minutes, which is a full minut longer than the lehner gave me at the same speed. Current peaks were only around 300A. The Motor
temperature was around 40°C or 104°F. This will be the result of the larger area that is watercooled in comparisment to the lehner but also the fact that the lehner
has a 2pole design (less torque) and the TP has a 6 pole design.

In my experience, lehners are just the best motors for running straight lines at high rpm and high speed. The only reason for this is their 2-pole design
and the smart design of the rotor of the lehners. For all other applications (oval racing , sport running , ... ) I believe TP/leopard/scorpion/neu are the better choice. This will be the case for just all the people who are not aiming at some speedrecord.

Furthermore, there is also the weight of the lehners. A TP5850 is almost a full kg lighter than a lehner 3080. This will have its influence on a boat
with a weight of 9-10kg like me 45' mono.

The last argument I have is the price of a Lehner. Yes it is true, lehner offers the highest quality motors on the market today. BUT, for the price
of 1 lehner you can often buy 3 - 4 TP/leopards. This means you will have to break 3-4 TP motors before you can say, yes it was worth it to buy the
more expensive lehner. I have never broken a TP motor so far and I am really pushing them the to limit. My TP5850 is rated up to 12kW, I am asking
around 15kW sometimes. I am running this setup for 1.5 year now. If the TP5850 would brake right know, that would mean the lehner 3080 I had
would be in my boat for 6 years?? In 6 years time, there will be some new motors on the market I guess, maybe better than the lehner motors right know for
a fraction of the price. Who knows?

OP: Wow man , where do you find the time to work on your boats that much? Looking great all along :)

[kfxguy]

Hello Keith,

I have done these comparisments so far:

Lehner 1950 vs leopard 3674
Lehner 2260 vs TP4070
Lehner 2280 vs TP4070
Lehner 3040 vs TP5660
Lehner 3080 vs TP5850

So far I had these result: the lehners motors are always hotter than the TP/leopard motors after the same amount of time, at the same voltage, with the same prop.
The kv of the motors I compare are more or less the same under load to minimize the difference between the motors. The Lehners
draw statistically 10-15% more peak current, runtime drops with 10-20%. I have ran over 2000 tests with all the different motors so
the results are in my opinion real and good data. I am working with a good friend on a study about DC electric engines. We have
ran the tests in a boat but also just on a bench with equipment mounted to it to see how the different motors designs performed.

In the case of the lehner 3080/9. Yes I have tried other voltages. I have ran it up to 16s2p in my 45' mono. That is close to a 35K setup.
35K isn't a that much for a lehner but still for a lehner 3080, I think it is near the maximum to keep the current peaks down (<500A) if you
want to spin a decent prop. With a x465 octura It ran around 75mph but the runtime was limited to 2minutes and the current peaks were
around 400A. The temperature of the lehner was around 55-60°C with the standard lehner cooling jacket mounted. This would be around 140°F
to make it easy for you. MBP now sells a longer cooling jacket for lehner motors which will definitely bring the temperature down a bit. I have tested
the impact of a small/longer cooling jacket on a TP4070 in a bench test 3weeks ago. The difference between a 50mm cooling jacket and a 90mm cooling
jacket were over 30°C or 86°F. All cooling jackets were made of the same material at the university I do this study at, just shorter or longer. A stunning result. After this test I am convinced I could bring the temperature of the lehner 3080 down a bit.

Last winter I mounted my old TP5850 600kv back in the boat. I ran it last week on 14s2p with a 6717/3 prop. Speeds so far in 3 runs: 78,82 and 81mph.
The most important result for me was the runtime, 3minutes, which is a full minut longer than the lehner gave me at the same speed. Current peaks were only around 300A. The Motor
temperature was around 40°C or 104°F. This will be the result of the larger area that is watercooled in comparisment to the lehner but also the fact that the lehner
has a 2pole design (less torque) and the TP has a 6 pole design.

In my experience, lehners are just the best motors for running straight lines at high rpm and high speed. The only reason for this is their 2-pole design
and the smart design of the rotor of the lehners. For all other applications (oval racing , sport running , ... ) I believe TP/leopard/scorpion/neu are the better choice. This will be the case for just all the people who are not aiming at some speedrecord.

Furthermore, there is also the weight of the lehners. A TP5850 is almost a full kg lighter than a lehner 3080. This will have its influence on a boat
with a weight of 9-10kg like me 45' mono.

The last argument I have is the price of a Lehner. Yes it is true, lehner offers the highest quality motors on the market today. BUT, for the price
of 1 lehner you can often buy 3 - 4 TP/leopards. This means you will have to break 3-4 TP motors before you can say, yes it was worth it to buy the
more expensive lehner. I have never broken a TP motor so far and I am really pushing them the to limit. My TP5850 is rated up to 12kW, I am asking
around 15kW sometimes. I am running this setup for 1.5 year now. If the TP5850 would brake right know, that would mean the lehner 3080 I had
would be in my boat for 6 years?? In 6 years time, there will be some new motors on the market I guess, maybe better than the lehner motors right know for
a fraction of the price. Who knows?

OP: Wow man , where do you find the time to work on your boats that much? Looking great all along :)

Good info. I did buy the 2250 and 2260 for straight line speed. They are for my rivercat (2250) and my shocker (2260). When i get to the point where i want to just tool around with them, then they will get neu motors. I have a 1521 for the rivercat already and it would be easy to take the 1521 out the mono to put in the shocker. Ive never had anything that runs hot because i always over do things.

[larryrose11]

Do you plan on using a STS?

[kfxguy]

Do you plan on using a STS?

Nope. It's to much trouble to fool with and I don't have water issues since I've started putting sealed roller bearings in my struts.

[kfxguy]

Didn't do anything to it tonight. I did finish the carbon sheet. I'd rather give it a couple days to fully cure before doing anything with it.

http://i218.photobucket.com/albums/cc243/ltzguy/4463CBC4-5C47-48EF-A5CD-DBF8E3CCC4DE.jpg (http://s218.photobucket.com/user/ltzguy/media/4463CBC4-5C47-48EF-A5CD-DBF8E3CCC4DE.jpg.html)

Carbon selfie? Lol you'd have to see this sheet in person, it's very nice. It measures about .080 thick.


http://i218.photobucket.com/albums/cc243/ltzguy/EC5A305A-65AB-4275-90AC-3AB026E8C4D4.jpg (http://s218.photobucket.com/user/ltzguy/media/EC5A305A-65AB-4275-90AC-3AB026E8C4D4.jpg.html)

[kfxguy]

Starting drilling holes

http://i218.photobucket.com/albums/cc243/ltzguy/Mobile%20Uploads/09B2FE1C-0FC6-49EC-A52A-A1D44E701FCB.jpg (http://s218.photobucket.com/user/ltzguy/media/Mobile%20Uploads/09B2FE1C-0FC6-49EC-A52A-A1D44E701FCB.jpg.html)

[kfxguy]

Made a multipurpose esc mount. In case I want to mount a different esc. Not doing anything elaborate or complicated. Maybe later. For now it will use a battery stray to hold the esc in place. Not covering anything up either. Simplicity and neatness is what I'm going after.

http://i218.photobucket.com/albums/cc243/ltzguy/Mobile%20Uploads/DD62DD4A-0F49-4D2B-9114-9BE2D664DE55.jpg (http://s218.photobucket.com/user/ltzguy/media/Mobile%20Uploads/DD62DD4A-0F49-4D2B-9114-9BE2D664DE55.jpg.html)

http://i218.photobucket.com/albums/cc243/ltzguy/Mobile%20Uploads/54252281-1DF7-40D1-B518-11771C4C9305.jpg (http://s218.photobucket.com/user/ltzguy/media/Mobile%20Uploads/54252281-1DF7-40D1-B518-11771C4C9305.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/Mobile%20Uploads/0B81DAE0-B9C4-4DC1-A40A-C8A2679CC13D.jpg (http://s218.photobucket.com/user/ltzguy/media/Mobile%20Uploads/0B81DAE0-B9C4-4DC1-A40A-C8A2679CC13D.jpg.html)

[kfxguy]

Got some more done.

I didn't have a linkage boot fitting long enough because the transom is very thick so I made one.



http://i218.photobucket.com/albums/cc243/ltzguy/Mobile%20Uploads/53B20D79-9912-40F7-AC31-5807E45101BC.jpg (http://s218.photobucket.com/user/ltzguy/media/Mobile%20Uploads/53B20D79-9912-40F7-AC31-5807E45101BC.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/Mobile%20Uploads/BA935400-006E-444E-8372-0CA5599EAA79.jpg (http://s218.photobucket.com/user/ltzguy/media/Mobile%20Uploads/BA935400-006E-444E-8372-0CA5599EAA79.jpg.html)

Started on the plate that holds the servo, receiver and bec.

http://i218.photobucket.com/albums/cc243/ltzguy/Mobile%20Uploads/B3AB6F19-3F9B-4DC8-AB84-4E1F2398057F.jpg (http://s218.photobucket.com/user/ltzguy/media/Mobile%20Uploads/B3AB6F19-3F9B-4DC8-AB84-4E1F2398057F.jpg.html)

[kfxguy]

Getting ready to mount the battery trays.

http://i218.photobucket.com/albums/cc243/ltzguy/Mobile%20Uploads/87F7EB72-A9E7-4020-957A-CA259DDAE2B7.jpg (http://s218.photobucket.com/user/ltzguy/media/Mobile%20Uploads/87F7EB72-A9E7-4020-957A-CA259DDAE2B7.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/Mobile%20Uploads/338C220C-2D17-4800-97D8-92907B0DCC3D.jpg (http://s218.photobucket.com/user/ltzguy/media/Mobile%20Uploads/338C220C-2D17-4800-97D8-92907B0DCC3D.jpg.html)

[Luck as a Constant]

What's the plan with this boat... Str8 speed runs?


Sent from my iPhone using Tapatalk

[Spartanator]

I think speed is his first goal, then after that it will be the one he runs on windy days so he might tone it down to a normal setup! lol

[kfxguy]

I think speed is his first goal, then after that it will be the one he runs on windy days so he might tone it down to a normal setup! lol

Are you living in my head? Lol. That's exactly the correct answer! Lol
I have the equipment capable of making it go really fast that's going in it first. Just to see what I can do with a mono as far as top speed goes. This should be a very capable hull (well what do I know, this is my first mono haha!). Then after that I have some other running places that aren't too cat friendly that I'd like to run at.

[Spartanator]

Are you living in my head? Lol. That's exactly the correct answer! Lol
I have the equipment capable of making it go really fast that's going in it first. Just to see what I can do with a mono as far as top speed goes. This should be a very capable hull (well what do I know, this is my first mono haha!). Then after that I have some other running places that aren't too cat friendly that I'd like to run at.

Haha, I feel like I am always pelting you you with questions, most of the time I get the answer! lol
V hulls (I will not call them a m_ _ _ hull, just don't like it!) are less efficient and will draw more amps (this is well known). The smart hulls are stepped which helps but it doesn't make it catamaran efficient. I have always been a V hull dude, always will be. I just run in an area where it is windy and choppy.

[kfxguy]

Got the slots cut in the battery trays. I was going to just use the little tabs that come with the trays and loop the straps around the tray like it was meant to be......but me being myself I just couldn't do that. I had to do it my way of course. Lol. I cut carbon strips that go the full perimeter around the tray and two center points. May be a little overboard but I'd rather them not come out.

http://i218.photobucket.com/albums/cc243/ltzguy/FA4A0FCA-2541-46A9-94E9-33DD2F81377A.jpg (http://s218.photobucket.com/user/ltzguy/media/FA4A0FCA-2541-46A9-94E9-33DD2F81377A.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/45F95BB4-95B2-48C2-AA92-80C87D7034A5.jpg (http://s218.photobucket.com/user/ltzguy/media/45F95BB4-95B2-48C2-AA92-80C87D7034A5.jpg.html)

And a pic how it sits right now. Waiting on the epoxy to dry on the rear deck plate and the battery tray tabs.


http://i218.photobucket.com/albums/cc243/ltzguy/CFB1D3C4-65C9-444D-B538-816FD390A64C.jpg (http://s218.photobucket.com/user/ltzguy/media/CFB1D3C4-65C9-444D-B538-816FD390A64C.jpg.html)

[Roy Van De Sande]

Looks awesome!

[kfxguy]

Got the battery trays in. What a pita! To do it nearly I had to epoxy the spacers to the trays, let them cure. Then with the bleed out I got epoxy on the front of the trays. I masked them off on the front but the epoxy still bled through. I used west systems there. I also had to re-mill the slots from the bleed out and also trim excess epoxy. That was two days gone there. I ordered some faster hardener so next time I don't have to wait as long. Had to put a light coat on the face of the trays because I had to sand the epoxy that got on them. Not too happy that happened but live and learn I suppose. Then I had to sand thin lines (bout 1/4" wide) in all areas of contact, wasn't easy gettin in there. I then used some 30 minute hobby shop epoxy (I use this on all my trays and never let me down yet) mixed with some black epoxy dye and some epoxy thickener made by west systems also. Almost like a peanut butter consistency. When I stuck the trays, they didn't move. Good stuff. Tomorrow I'll pour the foam. I haven't decided on a color yet. I was thinking about a pearl white. I also have a very good looking orange. I'm no painter so it'll have to be simple. Ideas?


http://i218.photobucket.com/albums/cc243/ltzguy/C2116A0A-E254-433B-8D24-624DC379B429.jpg (http://s218.photobucket.com/user/ltzguy/media/C2116A0A-E254-433B-8D24-624DC379B429.jpg.html)

[longballlumber]

I like the servo mounting posts! That has given me a few ideas for the future.

Later,
Ball

[kfxguy]

I like the servo mounting posts! That has given me a few ideas for the future.

Later,
Ball



Thx! I like to keep it simple (well sometimes haha) and this is cheaper, easier and nicer than buying a mount. They are 6-32 thread btw

[kfxguy]

Foam is done. Soldered in the cap bank. Block sanded the transom so the bottom edge is sharp as can be. Had to add another short "shelf" made of carbon to Velcro the cap bank to do it doesn't flop around. Trim tab holes are drilled but I came to a snafu I didn't think about. You see cats don't have trim tabs so I forgot about them up to this point. The receiver/servo plate gets in the way of me getting to the nuts to screw the tabs on. So now I have to get creative.



http://i218.photobucket.com/albums/cc243/ltzguy/370857F7-C004-46C8-AC6D-0501FDDC122A.jpg (http://s218.photobucket.com/user/ltzguy/media/370857F7-C004-46C8-AC6D-0501FDDC122A.jpg.html)

[rearwheelin]

lol :popcorn2:

[rearwheelin]

I like to make these for tight areas. I make them for everything I can because they work better than bolts ! 129981

[kfxguy]

I like to make these for tight areas. I make them for everything I can because they work better than bolts ! 129981

That's what I had planned on doing just a little thinner version.

[kfxguy]

Because I am impatient and a night owl I decided to go back out in the shop and make up my wire harness for the bec and the esc extension and put the esc, receiver and Bec in.

http://i218.photobucket.com/albums/cc243/ltzguy/95150E8C-63E2-44C6-B1BB-44DE62822DD5.jpg (http://s218.photobucket.com/user/ltzguy/media/95150E8C-63E2-44C6-B1BB-44DE62822DD5.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/0B838750-8AA7-4D90-86CA-9C65CF757301.jpg (http://s218.photobucket.com/user/ltzguy/media/0B838750-8AA7-4D90-86CA-9C65CF757301.jpg.html)

http://i218.photobucket.com/albums/cc243/ltzguy/5F6E7348-23C2-40CE-84C3-89A4F09ED0B3.jpg (http://s218.photobucket.com/user/ltzguy/media/5F6E7348-23C2-40CE-84C3-89A4F09ED0B3.jpg.html)

[kfxguy]

And one more

http://i218.photobucket.com/albums/cc243/ltzguy/976F586D-2DAC-454F-B248-CF1E7AE9BD5B.jpg (http://s218.photobucket.com/user/ltzguy/media/976F586D-2DAC-454F-B248-CF1E7AE9BD5B.jpg.html)

[tlandauer]

Looks awesome, cat guy or not, I don't care! :rockon2:

[rearwheelin]

That's what I had planned on doing just a little thinner version.

I have even considered just JB welding trim tabs. That stuff is incredibly strong for that type of application .

[Spartanator]

Nice!

[Luck as a Constant]

I have even considered just JB welding trim tabs. That stuff is incredibly strong for that type of application .



Seriously tho, I dunno if that stuff would hold trim tabs on ...

Sent from my iPhone using Tapatalk

[kfxguy]

I have even considered just JB welding trim tabs. That stuff is incredibly strong for that type of application .

Yeaaaaa............................no. Lol

[rearwheelin]

Yeaaaaa............................no. Lol

Serious Travis I'm going to do a boat some day with no bolts just JB and putty lol lol

[kfxguy]

Pecked away at it last night. Got the trim tab situation situated lol. I made some little aluminum threaded plates for the screws to catch just like rear wheeling suggested. Worked perfect.


http://i218.photobucket.com/albums/cc243/ltzguy/214C3406-7E83-466E-8028-1490CA099F8D.jpg (http://s218.photobucket.com/user/ltzguy/media/214C3406-7E83-466E-8028-1490CA099F8D.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/


[URL=http://s218.photobucket.com/user/ltzguy/media/6B5B7E1B-5A66-4E59-8C00-2BF23B3B3DD3.jpg.html][IMG]http://i218.photobucket.com/albums/cc243/ltzguy/6B5B7E1B-5A66-4E59-8C00-2BF23B3B3DD3.jpg ([URL=http://s218.photobucket.com/user/ltzguy/media/6B5B7E1B-5A66-4E59-8C00-2BF23B3B3DD3.jpg.html]http://i218.photobucket.com/albums/cc243/ltzguy/6B5B7E1B-5A66-4E59-8C00-2BF23B3B3DD3.jpg)


And I got it all wired up. Tested it. Everything is good to go.

http://i218.photobucket.com/albums/cc243/ltzguy/AEFCBB94-0EE1-4596-B984-96C7AE313C82.jpg ("[URL=http://s218.photobucket.com/user/ltzguy/media/AEFCBB94-0EE1-4596-B984-96C7AE313C82.jpg.html)"][URL=http://s218.photobucket.com/user/ltzguy/media/AEFCBB94-0EE1-4596-B984-96C7AE

[rearwheelin]

Watch now that's the way your going to start do-ing it now ! lol I use to do 4mm taps but switched to 3/32" , much better now.

[kfxguy]

Watch now that's the way your going to start do-ing it now ! lol I use to do 4mm taps but switched to 3/32" , much better now.

I did these in 3mm x .5 because that's the screws the tabs come with.

[kfxguy]

I don't usually do power up videos because I find them kind of boring to hear a motor spin.....but the mating of an mgm and lehner make music....literally....listen



http://youtu.be/22zRZ6l4H3w

[rearwheelin]

I did these in 3mm x .5 because that's the screws the tabs come with.

Sorry Travis I told you wrong . I meant 8-32.

[rearwheelin]

I don't usually do power up videos because I find them kind of boring to hear a motor spin.....but the mating of an mgm and lehner make music....literally....listen



http://youtu.be/22zRZ6l4H3w
Ha ha ha ! I just listened to that in my Tundra . It has 3 amps & 1500 true watts lol

The 2 poles are fast and do draw more amps so be cautious !

[Luck as a Constant]

I don't usually do power up videos because I find them kind of boring to hear a motor spin.....but the mating of an mgm and lehner make music....literally....listen



http://youtu.be/22zRZ6l4H3w

http://tapatalk.imageshack.com/v2/15/03/27/f45b1347aed4a543f823f639512fed7c.jpg
Yes, perfect to my robot ears


Sent from my iPhone using Tapatalk

[rearwheelin]

Yeah it almost sounded like R2 was dumping some oil . :bounce:

[kfxguy]

Well it's time to hit the water shortly. All I have left is the hatch seal. I'm about to go do it. Charging up batteries right now. I'll post a maiden video later today. Here's somepics in the mean time.


http://i218.photobucket.com/albums/cc243/ltzguy/DA9A0624-E31D-41F5-BBF1-2A472CE798D6.jpg (http://s218.photobucket.com/user/ltzguy/media/DA9A0624-E31D-41F5-BBF1-2A472CE798D6.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/79C140D6-B8BC-4F4D-B73F-FDB2F4CA0372.jpg (http://s218.photobucket.com/user/ltzguy/media/79C140D6-B8BC-4F4D-B73F-FDB2F4CA0372.jpg.html)

[Luck as a Constant]

Can't wait to hear the results.
What prop?
Also, I think you're gonna end up raising the strut up quite a bit


Sent from my iPhone using Tapatalk

[Spartanator]

Best of luck! I checked the weather in your area, should be a bit windy for speed: 70°F (21°C), Wind SE at 11 mph (18 km/h), 58% Humidity

[kfxguy]

It's not windy right now....I dunno


Here the boat itself. It's beautiful without paint!

http://i218.photobucket.com/albums/cc243/ltzguy/125E7609-EFBD-468A-825E-9CEC1D416ABA.jpg (http://s218.photobucket.com/user/ltzguy/media/125E7609-EFBD-468A-825E-9CEC1D416ABA.jpg.html)


I'll head down to the lake in a couple hours. I'm headed to my grandfathers house to help him pick something up that's to heavy for him. Stay tuned.

[Spartanator]

Figures, the weather is never right over here.... haha
That is really nice, even without paint.

[kfxguy]

Figures, the weather is never right over here.... haha
That is really nice, even without paint.

Heading back home now. On the side of town I'm on, the wind is blowing a little. Nothing a mono can't handle.

[kfxguy]

Omg. I was getting in the car ready to leave and I had a member text me and ask me if I had a water outlet on the boat because he didn't see one. Oooops. I was about to have a mess on my hands!!! Special thanks to complacent-one!!!

Stay tuned. Bout to drop it in the water.

[complacent_one]

no problem!! Glad I could be of assistance.
That could have been ugly, a true flotation test!!

[Spartanator]

I am awaiting that video, semi-patiently.... lol

[flraptor07]

I'm lookin', but I don't see no stinkin' video.....:noidea::spy:

[kfxguy]

Hang on. Lol. Uploading and looking at data logs. Was only getting 75% throttle.....

[Spartanator]

I'm lookin', but I don't see no stinkin' video.....:noidea::spy:

I have hit F5 about 20 times in the last 30 minutes.... It's killin' me.... :Praying:

[kfxguy]

Here's a spoiler.....

http://i218.photobucket.com/albums/cc243/ltzguy/112CD383-EF0E-42CE-8CE0-A6CB3512128A.jpg (http://s218.photobucket.com/user/ltzguy/media/112CD383-EF0E-42CE-8CE0-A6CB3512128A.jpg.html)

[flraptor07]

Hang on. Lol. Uploading and looking at data logs. Was only getting 75% throttle.....

I had the same problem with my MGM in my GP400, you have to calibrate the ESC for throttle as well as your TX. Watch it closely and do it exactly the same except for reverse...https://www.youtube.com/watch?v=GLzM5xyzseM

[srislash]

Here's a spoiler.....

http://i218.photobucket.com/albums/cc243/ltzguy/112CD383-EF0E-42CE-8CE0-A6CB3512128A.jpg (http://s218.photobucket.com/user/ltzguy/media/112CD383-EF0E-42CE-8CE0-A6CB3512128A.jpg.html)
Oooh,,, 60+ and 75% throttle!!! You are getting good Travis

[Spartanator]

I watched it! Great work!!!!!! It looks nice, really-really nice!

[DK535]

lol I'm refreshing the post every two minutes waiting for the vid lol. Was just talking to keith about this same setup

[kfxguy]

Here a video


http://youtu.be/f39Fj1EF7sE

[kfxguy]

This boat is bad a$$. I love it! It turns very well for not having turn fins on it. I was extremely pleased on this first run. Now.....story time! Lol


First run was grossly disappointing. 41.1mph on 6s. M645 prop. Like luck point out, strut was too low. It still is really. I got it to 50ish after Mille passes and moving the strut and changing battery location. Ended up putting the batteries as far back as they would go. I still have not got it aired out. I ran a data log on it and it's pulling upwards of 260-270 amps at 77% throttle. 77% is max throttle according to the data log, I watched the video flraptor posted and I did not calibrate it correctly. So there's an issue in itself. I plan on tuning it a bit more next weekend. I think I can get 60 out of it on 6s and 70 on 7s. I was going to run it on 8s but I'm not till I get it where it's not pulling so many amps. I'm extremely happy with this hull! On a side note, after running the mono a few times and draing the batts to 3.98v per cell, I threw the batts in the Daytona and clicked off a 79.2mph pass! I bet it would have gone 82ish on fresh batts. Good stuff!

[complacent_one]

That is a good looking boat. Looks like it was riding nicely!! I am hoping to have my KBB34 wrapped up by next weekend.

[kfxguy]

lol I'm refreshing the post every two minutes waiting for the vid lol. Was just talking to keith about this same setup

Keith has been very helpful with this build. When I told him I was on the way to the lake to run it he got excited. This is my first mono I've built and I feel like it's a huge success so far. The water wasn't glass smooth but she handled it like it was glass smooth.

[Luck as a Constant]

That thing looks like it's running excellent!
Nice work bro




Sent from my iPhone using Tapatalk

[Luck as a Constant]

I didn't see the hatch bolts done in here. Balls....
I remember asking you and you sent me a link to another thread, but I couldn't find it.
I was hoping you would show that in here lol



Sent from my iPhone using Tapatalk

[kfxguy]

Here's some more pics

http://i218.photobucket.com/albums/cc243/ltzguy/A9468DB2-3BF7-4D26-89BF-9638BD3F4EDC.png (http://s218.photobucket.com/user/ltzguy/media/A9468DB2-3BF7-4D26-89BF-9638BD3F4EDC.png.html)

http://i218.photobucket.com/albums/cc243/ltzguy/A6240815-C4D4-4BE6-84FF-DC1848353CF1.jpg (http://s218.photobucket.com/user/ltzguy/media/A6240815-C4D4-4BE6-84FF-DC1848353CF1.jpg.html)

[DK535]

Nice run!!!! Looks very stable. Wondering how it would be in chop and oval racing..... Hmmmm

[Luck as a Constant]

That thing is clean man. Looks so nice....
Now show me the hatch bolts haha


Sent from my iPhone using Tapatalk

[DK535]

You make the vinyl windshield?

[kfxguy]

I didn't see the hatch bolts done in here. Balls....
I remember asking you and you sent me a link to another thread, but I couldn't find it.
I was hoping you would show that in here lol



Sent from my iPhone using Tapatalk


Sorry man. I probably skipped a lot. This was a lot of work building this boat. My wife stayed mad at me. I was hauling butt to be the first one to get one on the water. Here's some pics of it I took tho. I used aluminum rivet nuts that rivet in place like a pop river. The front one had to be turned down smaller at the flange because the lip it was going in is too small. I chucked it in my drill (lightly! You'll bend it) and turned it down with my belt sander and then put a flat on the side that the hatch seal goes. (Like my tape comment in the video? Hahaha in your face tape users! Lol). I epoxied a carbon strip on the bottom side of the front one before squeezing the rivet. I also use a small amount of jb quick to help lock it in place. On the rear ones I use some square aluminum sheet metal as "washers" to reinforce it. They are epoxied in place and so are the rivet nuts along with being squeezed in place. I got the rivnut kit at harbor freight, 16 bucks. Buy replacement rivnuts on eBay for cheap. I use 8-32 stainless thumbs screws. 3/4" long. eBay. They are about 2 bucks each. I get the rubber washers from lowes. Smallest ones they carry. There is a 1/8" Id oring on the bottom side to keep from losing the thumb screws.

http://i218.photobucket.com/albums/cc243/ltzguy/557C97E4-F80C-4A58-9BCE-FC458C31B751.jpg (http://s218.photobucket.com/user/ltzguy/media/557C97E4-F80C-4A58-9BCE-FC458C31B751.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/AC898A63-5B74-4216-9858-15C98A13DC92_1.jpg (http://s218.photobucket.com/user/ltzguy/media/AC898A63-5B74-4216-9858-15C98A13DC92_1.jpg.html)



http://i218.photobucket.com/albums/cc243/ltzguy/65671055-81EC-4CF6-8F1E-5C25EE52AD20.jpg (http://s218.photobucket.com/user/ltzguy/media/65671055-81EC-4CF6-8F1E-5C25EE52AD20.jpg.html)

[flraptor07]

Looks awsome Travis, What prop did you end up with? You should be able to get up around 50-52mm 1.6 pitch look at some ABC props, I've been using some lately and I really like them try a 2016-10-50 Clever it's 50.8mm 1.6 pitch or a 1916-10-50 it's 48.26mm 1.6 pitch.

[Luck as a Constant]

Sorry man. I probably skipped a lot. This was a lot of work building this boat. My wife stayed mad at me. I was hauling butt to be the first one to get one on the water. Here's some pics of it I took tho. I used aluminum rivet nuts that rivet in place like a pop river. The front one had to be turned down smaller at the flange because the lip it was going in is too small. I chucked it in my drill (lightly! You'll bend it) and turned it down with my belt sander and then put a flat on the side that the hatch seal goes. (Like my tape comment in the video? Hahaha in your face tape users! Lol). I epoxied a carbon strip on the bottom side of the front one before squeezing the rivet. I also use a small amount of jb quick to help lock it in place. On the rear ones I use some square aluminum sheet metal as "washers" to reinforce it. They are epoxied in place and so are the rivet nuts along with being squeezed in place. I got the rivnut kit at harbor freight, 16 bucks. Buy replacement rivnuts on eBay for cheap. I use 8-32 stainless thumbs screws. 3/4" long. eBay. They are about 2 bucks each. I get the rubber washers from lowes. Smallest ones they carry. There is a 1/8" Id oring on the bottom side to keep from losing the thumb screws.

http://i218.photobucket.com/albums/cc243/ltzguy/557C97E4-F80C-4A58-9BCE-FC458C31B751.jpg (http://s218.photobucket.com/user/ltzguy/media/557C97E4-F80C-4A58-9BCE-FC458C31B751.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/AC898A63-5B74-4216-9858-15C98A13DC92_1.jpg (http://s218.photobucket.com/user/ltzguy/media/AC898A63-5B74-4216-9858-15C98A13DC92_1.jpg.html)



http://i218.photobucket.com/albums/cc243/ltzguy/65671055-81EC-4CF6-8F1E-5C25EE52AD20.jpg (http://s218.photobucket.com/user/ltzguy/media/65671055-81EC-4CF6-8F1E-5C25EE52AD20.jpg.html)

Thank you sir!


Sent from my iPhone using Tapatalk

[kfxguy]

I'm using an x648 on it right now. No prop walk and drives perfect. I may try some different props but I think I can get the speed I'm looking for with this one. The motor literally laughed at the load I put it through. It never got warm. I do have very good water flow also. Esc temp stayed at 104f or less.

[Spartanator]

How warm were those Castle 6.5mm greens? Castle says they are rated for 200 amps but you were over that, a tiny bit... lol
I kind of wish I would of waited and then bought the same hull.... lol

[keithbradley]

I ran a data log on it and it's pulling upwards of 260-270 amps at 77% throttle.

Not surprising. You're turning a lot of prop at part throttle, and it looks a bit wet.
I've done this before with other ESCs (accidentally ran at part throttle) and I can tell you that 75-80% throttle seems like it was 50% once you calibrate it and run with 100%.
Loosen it up (trim tabs up, strut up, etc.) and run a smaller prop on 6s with 100% throttle. I bet you like it! I don't think you will need 8s with it. 6s will be easily in the 60s with a smaller prop than what you're already running and 7s will be screaming at 100%.

Oh and by the way, thanks for the kind words; I'm glad you're liking the hull! :thumbup1:

[complacent_one]

Good thing that water had a place to go :hornets_nest:

Now I have to order a rivnut tool. Now that I see an anchor works in the front of the hatch, i will have to change things up.

Thanks!!

[kfxguy]

How warm were those Castle 6.5mm greens? Castle says they are rated for 200 amps but you were over that, a tiny bit... lol
I kind of wish I would of waited and then bought the same hull.... lol

Nothing was hot in there.

[rearwheelin]

I want to see you run it ! Not this speed pass stuff get it railing turns off the hook lol

[complacent_one]

How warm were those Castle 6.5mm greens? Castle says they are rated for 200 amps but you were over that, a tiny bit... lol
I kind of wish I would of waited and then bought the same hull.... lol

Keep in mind, that the amp draw is split between the packs, so that would only be 130-140 per pair at the batteries.

[kfxguy]

I want to see you run it ! Not this speed pass stuff get it railing turns off the hook lol

I didn't put turn fins on it just yet. When I do I'll get videos of it carving up the water. I did try to flip it at 50ish and it took it and hanged the turn well. I know I know...video be better lol.

[complacent_one]

Also, if you have ever looked at a 300 amp fuse for 12v car applications, that piece of metal is tiny. I can almost guarantee a 6.5 can handle in excess of 500 or so amps.

[Spartanator]

Nothing was hot in there.


Keep in mind, that the amp draw is split between the packs, so that would only be 130-140 per pair at the batteries.

O.... Good point. I wasn't paying attention, again...lol

[complacent_one]

O.... Good point. I wasn't paying attention, again...lol

Electronics is my gig. Boats....not so much, still learning.

Where at in Texas??

[Spartanator]

Electronics is my gig. Boats....not so much, still learning.

Where at in Texas??

I used to build computers before I started to play with things that move.... These Toy (Notice the capital T in Toy...lol) boats are crazy fun when it gets windy outside.
League City/Kemah (between Galveston and Houston) . I was going to ask you the same thing but a few weeks back I was asking everyone that was listed as being in Texas... lol

Looks like Travis will get to build another one of these... lol

[complacent_one]

sweet...hate stomping on Travis's thread, but I am up in Leander, suburb of Austin. Have an office in Houston that I frequent....may have to get together for some boating action. Toys...oh yeah, I like my TOYS!!! Wife is not fond of them...but oh well, that is life...

[kfxguy]

I had the same problem with my MGM in my GP400, you have to calibrate the ESC for throttle as well as your TX. Watch it closely and do it exactly the same except for reverse...https://www.youtube.com/watch?v=GLzM5xyzseM

Very helpful. Thanks!!!!

[tlandauer]

Travis, I am afraid to repeat myself, so here goes: :thumbup1::thumbup1::thumbup1: Love the CF tube. Everything so neat and well thought out.
Great build! I am almost ready to ditch my tapes after seeing these pictures. :lol:

[keithbradley]

Keep in mind, that the amp draw is split between the packs, so that would only be 130-140 per pair at the batteries.
I think he's just running (2) 3s packs for 6s, isn't he?
If so, there's no current sharing taking place, both packs are under the full load.

[kfxguy]

I think he's just running (2) 3s packs for 6s, isn't he?
If so, there's no current sharing taking place, both packs are under the full load.

Two 3s packs. (2) 6s pack would be heeeeeavy! Look what it weighs with two 3s.....



http://i218.photobucket.com/albums/cc243/ltzguy/22F00A54-9FE0-40A7-BF03-DB7EE60DE09F.jpg (http://s218.photobucket.com/user/ltzguy/media/22F00A54-9FE0-40A7-BF03-DB7EE60DE09F.jpg.html)

[flraptor07]

Two 3s packs. (2) 6s pack would be heeeeeavy! Look what it weighs with two 3s.....



http://i218.photobucket.com/albums/cc243/ltzguy/22F00A54-9FE0-40A7-BF03-DB7EE60DE09F.jpg (http://s218.photobucket.com/user/ltzguy/media/22F00A54-9FE0-40A7-BF03-DB7EE60DE09F.jpg.html)

LOL Dude, that ain't heavy!! That Vern Kilmer Mono I have weighs almost 21lbs. RTR on 10s :scared: and the 1/8 scale Hydro I have weighs 18.4lbs RTR on 10s :lol: That KBB Mono is lite!!!

[flraptor07]

Very helpful. Thanks!!!!

No problem bro, I could tell the difference just swatting the throttle on the bench! Keith's right, you'll think it was only getting 1/2 throttle when you run it next time! Night a day difference....

[kfxguy]

No problem bro, I could tell the difference just swatting the throttle on the bench! Keith's right, you'll think it was only getting 1/2 throttle when you run it next time! Night a day difference....

ugh o.....this thing ought to move on out then! I know my prop is still too deep or the boat is riding too wet also for it to be pulling those types of amps. So far i really really like this motor/esc combo. Thats what the rivercat will be getting! I can just give my son that converted castle. I cant wait to run it again....might go out there wed. after work on the way home and run it again.

[Stevesc]

ugh o.....this thing ought to move on out then! I know my prop is still too deep or the boat is riding too wet also for it to be pulling those types of amps. So far i really really like this motor/esc combo. Thats what the rivercat will be getting! I can just give my son that converted castle. I cant wait to run it again....might go out there wed. after work on the way home and run it again.

Travis if I were you I would definatly get out and run it on Wednesday and make sure you have plenty of batteries charged up this time. Oh you may want to grab that Daytona too and give ithat a whirl...lol

[kfxguy]

Travis if I were you I would definatly get out and run it on Wednesday and make sure you have plenty of batteries charged up this time. Oh you may want to grab that Daytona too and give ithat a whirl...lol

i'll have to see. I wont be able to video it because my son wont be with me. Its almost not worth me going without video but i really want to get 70 out this mono. and breaking 80 with the daytona would be good too...it just is 10x better on video!

[Spartanator]

i'll have to see. I wont be able to video it because my son wont be with me. Its almost not worth me going without video but i really want to get 70 out this mono. and breaking 80 with the daytona would be good too...it just is 10x better on video!

We do enjoy the videos.... lol


I think he's just running (2) 3s packs for 6s, isn't he?
If so, there's no current sharing taking place, both packs are under the full load.

Y'all confuse me....

[Luck as a Constant]

ugh o.....this thing ought to move on out then! I know my prop is still too deep or the boat is riding too wet also for it to be pulling those types of amps. So far i really really like this motor/esc combo. Thats what the rivercat will be getting! I can just give my son that converted castle. I cant wait to run it again....might go out there wed. after work on the way home and run it again.

Actually, watching your vid, the ride looked pretty nice.
Raising the prop will def lower amp draw. There's a certain point where a prop really doesn't seem to gain any performance as far as depth goes. So just getting it to the point it hooks up nicely, without cavitation like crazy is a good place. Any deeper and the amps just go up.



Sent from my iPhone using Tapatalk

[kfxguy]

[QUOTE=Luck as a Constant;620767]Actually, watching your vid, the ride looked pretty nice.
Raising the prop will def lower amp draw. There's a certain point where a prop really doesn't seem to gain any performance as far as depth goes. So just getting it to the point it hooks up nicely, without cavitation like crazy is a good place. Any deeper and the amps just go up.
QUOTE]

Keith says it can be aired out a little more. I'm gonna try to raise the prop (gonna mark where it at right now) and go from there. I want to get the amp draw down. It kept getting faster as I raies the prop. I'm not sure why I stopped running it at the point I did. I guess I like fresh packs to do testing. Stay tuned, I'll be going back in a few days hopefully.

[kfxguy]

Oooooo holy sheet! I just re calibrated the throttle. I blipped it before to get an idea of the sound. Recalibrate it and did it again. Omg. It was a huge difference in sound! Huge!


Here's how the strut is adjust too btw.


http://i218.photobucket.com/albums/cc243/ltzguy/0909CE8A-0C2B-4948-9B3D-5C45ABFC9E77.jpg (http://s218.photobucket.com/user/ltzguy/media/0909CE8A-0C2B-4948-9B3D-5C45ABFC9E77.jpg.html)

[rearwheelin]

We do enjoy the videos.... lol



Y'all confuse me....

Here you go !

http://youtu.be/LhNcCa7jYDE

[kfxguy]

Here you go !

http://youtu.be/LhNcCa7jYDE

That's awesome! Lmao!

[rearwheelin]

That's awesome! Lmao!

Ha ha !!

[flraptor07]

Oooooo holy sheet! I just re calibrated the throttle. I blipped it before to get an idea of the sound. Recalibrate it and did it again. Omg. It was a huge difference in sound! Huge!


Here's how the strut is adjust too btw.


http://i218.photobucket.com/albums/cc243/ltzguy/0909CE8A-0C2B-4948-9B3D-5C45ABFC9E77.jpg (http://s218.photobucket.com/user/ltzguy/media/0909CE8A-0C2B-4948-9B3D-5C45ABFC9E77.jpg.html)

I told you!:biggrin:

[Spartanator]

[QUOTE=rearwheelin;620777]Here you go !

http://www.websmileys.com/sm/happy/028.gif

[kfxguy]

i'm charging batteries tonight and i'm gonna make a trip to the big lake by my house. I'm gonna run it on 6s first and see if i can get 60mph out of it on 6s....then try it on 7s. I'm not brave enough to run 8s just yet lol

[Make-a-Wake]

LOL Dude, that ain't heavy!! That Vern Kilmer Mono I have weighs almost 21lbs. RTR on 10s :scared: and the 1/8 scale Hydro I have weighs 18.4lbs RTR on 10s :lol: That KBB Mono is lite!!!

Gotcha beat.........though that's not a good thing............1/8 48" Hydro Castle 2028 9s2p......22lbs.......fat boy!

[Make-a-Wake]

Travis, VERY good job on the Mono................solid, great looking etc................!!

[kfxguy]

Travis, VERY good job on the Mono................solid, great looking etc................!!

Thanks!!

[kfxguy]

Ok, I've got this app on my phone that allows me to watch videos Ive recorded in slow motion. I thought what better way to really analyze how the boat is riding and how deep things are in the water. This says a lot....tell me what you guys think. I think the strut should come up more and maybe a touch more positive angle.....

http://i218.photobucket.com/albums/cc243/ltzguy/8962DE5F-DA96-4E46-9E8D-E16EB68DA0FA.png (http://s218.photobucket.com/user/ltzguy/media/8962DE5F-DA96-4E46-9E8D-E16EB68DA0FA.png.html)


http://i218.photobucket.com/albums/cc243/ltzguy/47F11383-B225-4870-814A-13CA72D226AF.png (http://s218.photobucket.com/user/ltzguy/media/47F11383-B225-4870-814A-13CA72D226AF.png.html)

[rearwheelin]

Not enough roost ! :nopity:

[monojeff]

From last pics it's definately running wet.
You can definately air that out a lot more.
In the straight you want as little boat in the water as possible without flipping backwards.
Raise your tabs up so you know they aren't creating drag or dropping the nose.
Balancing act takes time to get it right.

[complacent_one]

Or just leave it alone, considering, you were at partial throttle. It may do a lot of the airing out on it's own with another 10k rpm??

[kfxguy]

Or just leave it alone, considering, you were at partial throttle. It may do a lot of the airing out on it's own with another 10k rpm??

Honestly I really want to raise the strut at this point but I know better. The best course of action is one change at a time. I'll make a pass or two and see what the difference is with just the throttle calibration. Then I'll start moving the strut. Trim tabs are angle up a tad. I'm honestly thinking about removing them. Doesn't seem like I need them. It's always a process lol.

[Spartanator]

I would leave the tabs if you are going to run it in the choppy water, up to you though. One of those rather have em' but don't use them things. You really did a great job on it!

[Make-a-Wake]

Rear end is sure hunkered down................looks a bit wet, you tried an x6 series?

[Make-a-Wake]

Travis, this isn't the clearest frame grab but here's my 33" Pursuit at 59 mph...........a lot more aired out

[kfxguy]

Rear end is sure hunkered down................looks a bit wet, you tried an x6 series?

That's an x648 in that pic. I tried an m645 too

[Make-a-Wake]

Hmmm.............My frame grab is with an x442............maybe try an x445 just to see, could be too much lift.........??

[rearwheelin]

Travis I think you have way too much prop in the water and agree with your theory on needing a strut adjustment . Try adjusting so your prop sticks out about 1/3" past the keel. Or go with a smaller prop.

[kfxguy]

Travis I think you have way too much prop in the water and agree with your theory on needing a strut adjustment . Try adjusting so your prop sticks out about 1/3" past the keel. Or go with a smaller prop.

i'm gonna try that.....raising the strut....

[rearwheelin]

i'm gonna try that.....raising the strut....

Or attach a ride plate to the strut ! lol

[Spartanator]

Or attach a ride plate to the strut ! lol

I saw something about flat bottom struts.... Maybe you could modify your strut if you can't get it to ride by lifting the prop.

[Make-a-Wake]

I'd try a bit of positive on the strut.................

[flraptor07]

OK now you guys are stretching:laugh: I think the setup he has now is pretty close if he has full throttle. Travis just try it now with the ESC calibrated correctly and see what happens.:thumbup1:

[Make-a-Wake]

Not stretching if his throttle was set right.......????...........we are all thinking its the setup not the darn throttle................That would be the first thing that should have been checked...........

[complacent_one]

I ran a data log on it and it's pulling upwards of 260-270 amps at 77% throttle. 77% is max throttle according to the data log, I watched the video flraptor posted and I did not calibrate it correctly. So there's an issue in itself.

I think the suggestions of calibrate the throttle and run it first, without any setup changes were based on this comment. I would think that judging the rpm on the bench would prove a bit challenging if it is your first time spooling up a 2pole, compared to multiple times with 4pole motors.

Have a feeling that he will have some great news on accomplishments with the new hull after his outing, this evening.

[Make-a-Wake]

Have a feeling that he will have some great news on accomplishments with the new hull after his outing, this evening.

I'm certainly pulling for him

[kfxguy]

Just ran it. It's much faster. On 6s it's faster than it was on 7s before. Went 69.1mph on 6s (went 61.7 on 7s before throttle recalibrate). Went 75.4mph on 7s. I made NO changes other than recalibrate throttle. I think the prop is still too deep. It did air out more but I've got some tuning to do. It'll be in the 80's this weekend if I can get to the lake. Stay tuned for videos. You guys are gonna enjoy the 6s one...

[flraptor07]

Just ran it. It's much faster. On 6s it's faster than it was on 7s before. Went 69.1mph on 6s (went 61.7 on 7s before throttle recalibrate). Went 75.4mph on 7s. I made NO changes other than recalibrate throttle. I think the prop is still too deep. It did air out more but I've got some tuning to do. It'll be in the 80's this weekend if I can get to the lake. Stay tuned for videos. You guys are gonna enjoy the 6s one...

How about that, 100% throttle makes a big difference:laugh::thumbup: I'm glad that did it, now you can really tune on it! I'm sure you'll have it running in the 80s this weekend, probably 90s if you put it on 8s.... Also if everything is still running cool then put more prop on it!!

[Spartanator]

Sounds like you had a good outing. Anyone want to take bets that he will get this to? 87mph?
I am sitting on your YouTube page clicking refresh..... lol

[flraptor07]

Not stretching if his throttle was set right.......????...........we are all thinking its the setup not the darn throttle................That would be the first thing that should have been checked...........

The MGM ESC calibrates different, you not only have to calibrate your TX you also have to calibrate the ESC for full throttle.

[Make-a-Wake]

So if you want to cruise at 35mph just change your throttle setting to 50%!!!!

JK...............good job

[Luck as a Constant]

I want circles


Sent from my iPhone using Tapatalk

[kfxguy]

Thanks fellas. My actual goal with this was 80mph. I didn't want to say that because I don't like to count my chickens before they hatch....but I've had 75.4 of them hatch so far so I can say I'm pretty close. And this is only the second run. I'm going to be fighting some chime walk now so that's going to be a new learning curve on how to cut it down some. The water wasn't exactly smooth which is kind of needed for these speeds with this small of a hull. At least that's what I think anyway. I'm hoping that raising the strut will help some now. I'm uploading my data log at the moment so I'll check my amps again when that's done.


Looks like it's mid 200's with a peak of 399. :flame42:

[kfxguy]

I want circles


Sent from my iPhone using Tapatalk

I did try some circles just for you. It kinda of skips. Maybe I was being too aggressive. It does not have turn find on it and has a pretty big prop so right now it's just set up to go fast straight. When I get 80, I'll putturn find on it for you and go carve some circles.

[Spartanator]

Wow, 399. That is some some amps. Maybe a longer rudder would help with Chinewalk? I am not sure....

[keithbradley]

I did try some circles just for you. It kinda of skips. Maybe I was being too aggressive. It does not have turn find on it and has a pretty big prop so right now it's just set up to go fast straight.
Why wait? Put some turn fins on that thing...you're going to be surprised when you do.

[kfxguy]

Wow, 399. That is some some amps. Maybe a longer rudder would help with Chinewalk? I am not sure....

This is one reason I have not painted the boat yet. I mounted the rudder up 1/4" higher than my first guess. I can move it lower and fill the holes in. One thing I have not done yet is eliminate slack in the steering. I had a chine walk type issue with the Daytona. At 69mph it was fine. If I broke 70mph and went through any small ripple other than glass smooth water, it would wag back and forth a few times and before I could chop the throttle, it would go flipping. I eliminated the slack and I picked up 10mph believe it or not. Little bit of slack will hurt more than you think at high speeds. Only slack I have is the rudder pin. I can move the bottom of the rudder around a bit. I'll address that by the weekend. Also I was thinking the strut being to far in the water making the prop too deep could be a factor, Keith says that's possible too. All the little things will add up. It's always a process but I don't mind it.

Btw, my wifi is being suuuuper slow so the two videos still are not done.

[rearwheelin]

Pull that prop up and your amp will go way down ! Turn fins are night and day when it comes to the curves ! Awesome man !

[Peter A]

Trav, I think that you are going to have to play with props on this one. I am thinking 3 blades, detounged, something like a 645, maybe even something cut down. As well as getting the strut height just right. Just the right prop I'm sure will give magic numbers. It'll be a trial and error thing. But great stuff so far. It is a really nice looking boat. Waiting for the vids.

[kfxguy]

Here's 6s (fell asleep waiting on them to upload)


http://youtu.be/wYsSEOjBybI

[kfxguy]

And here is 7s



http://youtu.be/akpHpqD2CDI

[rearwheelin]

Dam ! That's moving ! Time to put some turn fins on and practice turning and at least 3 minutes of it ! lol

[Make-a-Wake]

That's awesome.................I actually liked the 6s run better though, nice sound and looked so stable.

[monojeff]

7s run was looking great right at the end.
Then you let off the throttle?

[flraptor07]

Looks great Travis, It's got a ton left in it! That thing is gonna surprise you when you get it all dialed in:thumbup:

[kfxguy]

Thanks fellas! I'm wondering if the chine walking has something to do with having a 4s pack on one side and a 3s on the other. I'm going to make a weight stick to stick to the 3s battery to balance it out to see. I have a few ideas. I'll get past this hopefully. Here's another video, my very first 7s pass. I made several runs, didn't video every one.



http://youtu.be/btOXxbNEp38

[srislash]

Thanks fellas. My actual goal with this was 80mph. I didn't want to say that because I don't like to count my chickens before they hatch....but I've had 75.4 of them hatch so far so I can say I'm pretty close. And this is only the second run. I'm going to be fighting some chime walk now so that's going to be a new learning curve on how to cut it down some. The water wasn't exactly smooth which is kind of needed for these speeds with this small of a hull. At least that's what I think anyway. I'm hoping that raising the strut will help some now. I'm uploading my data log at the moment so I'll check my amps again when that's done.


Looks like it's mid 200's with a peak of 399. :flame42:

Hey Travis, it is looking good buddy. So at what point was the 399? And how long?

As far as your 7s imbalance, anything at that speed that isn't perfect can give grief. As you know. I think the weight is a good plan.

[kfxguy]

Hey Travis, it is looking good buddy. So at what point was the 399? And how long?

As far as your 7s imbalance, anything at that speed that isn't perfect can give grief. As you know. I think the weight is a good plan.

That spike was right when I nailed it for a split second. Average amps is about 250-260. Way too high for my liking. I knew that the prop is too deep but I didn't want to change anything else but calibrating the throttle. That's the only way I'd know how much it helped. Picked up 14mph just from that. Now it's time to start moving the strut and play with props.

[srislash]

Y'know I had Chris do me a PropShop 445/3 that is REAL nice on my Pursuit. Nice size without too much lift.

[kfxguy]

Y'know I had Chris do me a PropShop 445/3 that is REAL nice on my Pursuit. Nice size without too much lift.

I'm afraid a three blade will pull even more amps. This is actually going to be a play boat for me in rough waters as soon as i find out the max speed I can get. Right now I'm shooting for 80. But when I get to 80 I may want to take it further.

[kfxguy]

7s run was looking great right at the end.
Then you let off the throttle?

it started to chine walk. no sense in trying to be a hero lol.

[Fella1340]

She's looks great and runs fast, good combination. Well done Travis.

[flraptor07]

it started to chine walk. no sense in trying to be a hero lol.

The little bit of chine walk you had wasn't bad, try running it out a little futher. Sometimes you can drive through it, if it gets real violent then let out. Even at the worst, it'll just roll over or stuff I've done it with my Ariane a few times and even with that big Vern Kilmer Viper. Monos don't stay upside down as easy as cats do.:laugh:

[rearwheelin]

I'm afraid a three blade will pull even more amps. This is actually going to be a play boat for me in rough waters as soon as i find out the max speed I can get. Right now I'm shooting for 80. But when I get to 80 I may want to take it further.

Of coarse you will ! lol

[kfxguy]

Of coarse you will ! lol

It's funny how everyone on here knows how I am hahaha

[kfxguy]

She's looks great and runs fast, good combination. Well done Travis.

Thanks, I've only just begun.

Flraptor, man all that money I got out there on the water.......I pucker up when it starts that chine walking.

[Make-a-Wake]

I pucker up when it starts that chine walking.

Well, on a Positive note you built it like a tank..........secondly a Mono has less damage(if at all) in a flip/crash, (they tend to wanna plug or at times do a 360* and keep on truckin)......Cats have more, and I have seen Hydros trashed.

[785boats]

Certainly worth all the effort Travis. Nice to see it run.

[kfxguy]

Well, on a Positive note you built it like a tank..........secondly a Mono has less damage(if at all) in a flip/crash, (they tend to wanna plug or at times do a 360* and keep on truckin)......Cats have more, and I have seen Hydros trashed.
Yea your right! I still get nervous.

[kfxguy]

certainly worth all the effort travis. Nice to see it run.

thanks!

[Spartanator]

Watched them at work today while at lunch, they were good! I guess you could move the rudder down if you have the room. I am not fond of putting more holes in my boats though.... lol
I guess if you want to try a small 3 blade you could go from that point so you don't pull the smoke out of the ESC....

[Luck as a Constant]

Seeing this thing go makes me want to run my df35 so bad.... Gahhhhhh!!!!!
Still waiting for the lakes to unfreeze here in mass


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[kfxguy]

Watched them at work today while at lunch, they were good! I guess you could move the rudder down if you have the room. I am not fond of putting more holes in my boats though.... lol
I guess if you want to try a small 3 blade you could go from that point so you don't pull the smoke out of the ESC....


The 69mph video was the most impressive. It was closer and a longer run. I'm on the fence about changing prop at the moment. I think I have a good plan at the moment.
1) remove slack from rudder
2) raise strut a bit. Retest. The prop is prett deep in the water after watch and zooming in on it. I think that would drop the amps a bit. If it doesn't im going to run an m447 on it.

[kfxguy]

Ok. I fixed the rudder slack. I measured it before. It have exactly .100 slack. Now it has none. I had a 3/16 shaft I used as the pin. I used a reamer instead of a drill bit to get an accurate hole. Perfect, no slack and smooth. While I was doing that I noticed I had a busted strut bearing. Evidently when I staked it in place with an automatic center punch I must have cracked it. Fixed. Then I marked the strut and moved it up exactly 1.5mm with no angle change. Maybe should raise it more but I guess less may be more at this point. I'm gonna charge the batts again tonight and see if I can make a trip to the lake tomorrow after work. It's killing me that it's so far out of tune but really is running pretty fast. This motor must make serious power. I was logging 7000w lol

[rearwheelin]

You only need about 3500w lol

[Roy Van De Sande]

7000W on 7s should be around 270A. Those are some serious amps :cool2: Looking forward to your next video!

[kfxguy]

7000W on 7s should be around 270A. Those are some serious amps :cool2: Looking forward to your next video!

Yep I was logging around that area. Little much for my liking. i'm hoping to bring the amps down on the next run. At least the motor isnt staying in here, its for my 37" cat so it should pull less amps in a cat than in a mono. I'm jonesing to try the neu 1527 in it but Ive got to finish tweaking this combo first.

[flraptor07]

I can't think of any reason this setup should pull that many amps, it's not that wild of a setup. Do you have all the parameters set right in the data logging info? Cause if it's not, it'll read wrong data. How much timing do you have in it?

[kfxguy]

I can't think of any reason this setup should pull that many amps, it's not that wild of a setup. Do you have all the parameters set right in the data logging info? Cause if it's not, it'll read wrong data. How much timing do you have in it?

keith told me to set the timing at 15 degrees (first time running a lehner and mgm) so thats what i did. The prop is real deep in the water so i'm sure that has alot to do with it. plus its kind of an aggressive prop. i'm not sure on the parameters, i didnt change anything. I am educationally (lol at that word) guessing that the esc is limiting the current, thats part of the reason its only picking up 5-6mph when going from 6s to 7s. I usually see a 10 mph gain on decent setups and ive seen 15mph difference on my rivercat.

[flraptor07]

keith told me to set the timing at 15 degrees (first time running a lehner and mgm) so thats what i did. The prop is real deep in the water so i'm sure that has alot to do with it. plus its kind of an aggressive prop. i'm not sure on the parameters, i didnt change anything. I am educationally (lol at that word) guessing that the esc is limiting the current, thats part of the reason its only picking up 5-6mph when going from 6s to 7s. I usually see a 10 mph gain on decent setups and ive seen 15mph difference on my rivercat.

Keith would deffinetly know about running that combo, he runs a lot of them. I guess see what raising the strut does and go from there.

[Make-a-Wake]

Maybe try moving the strut/stinger up a few mm...........positive way. This will get some of the prop out and let it unload reducing amps and also possibly free up the hull(not so wet)

[kfxguy]

Maybe try moving the strut/stinger up a few mm...........positive way. This will get some of the prop out and let it unload reducing amps and also possibly free up the hull(not so wet)

i did raise it 1.5mm but did not change the angle just yet. i'm hoping to go run it again when i get home.

[kfxguy]

Just went run it again. Didn't go any faster but I did get some interesting data. It's a little more stable with fixing the rudder slack. That helped a little. Then I moved the strut up and down. Moved batteries. Messed with trim tabs. Tried several props. It ended up liking a smaller prop. Once I got it more dialed in it went 75.2 with run down batteries (3.79v per cell). I had made about ten test passes on those batteries and the last pass was only .2mph slower than my fastest pass on fully charged packs. I even drove it around for a bit before this pass. Now I feel confident it'll do about 77-78 with charged packs. Only one way to find out. My amp draw should be less now with a smaller prop too.

[complacent_one]

good stuff, Travis!!

[kfxguy]

Just checked data log. With the smaller prop I peakies 355 amps for a millisecond right when I nailed it. Then amps level out quickly to 195-218. So much better. Controller temp hovered around 125-130f. Motor was barely warm. Connectors weren't warm. Batteries were barely warm.

[complacent_one]

now, just need to cup that prop a bit more to increase the pitch.....That girl will be rollin!!

[kfxguy]

Here's a graph. You can see a trend. Some runs are on top of each other too because it took Amoy less time to change the prop vs the strut. Notice the one all the way to the right, that was my last run with the smaller prop. This run was with trim tabs flat and batteries at the rear most part of the trays. Check the highest one....I'd be willing to bet that was the abc prop. Sorry for the cheesy pic of my computer screen.


http://i218.photobucket.com/albums/cc243/ltzguy/AE8CD101-E8BF-444D-94F9-4F96FD49DB26.jpg (http://s218.photobucket.com/user/ltzguy/media/AE8CD101-E8BF-444D-94F9-4F96FD49DB26.jpg.html)

[srislash]

Very interesting Travis. Kind of a quicker/shorter run on that last one. Are you going to try a touch smaller prop again to see what it does or just a fresh set of batteries?

You know I am paying attention and learning from your logs for my LMT twin setup.
Thanks

[kfxguy]

Very interesting Travis. Kind of a quicker/shorter run on that last one. Are you going to try a touch smaller prop again to see what it does or just a fresh set of batteries?

You know I am paying attention and learning from your logs for my LMT twin setup.
Thanks

Actually it's hard to tell because that's 18 minutes condensed together on one page but the last run was my longest as I was able to hang on to it longer. I made quite a bit of runs, some were right back to back and they are jumbled together on that page. I only had my son video three of the runs. I wasn't worried with it because I was just trying to get it lined out. I did up a m447 tonight (which may end up on the Daytona) but I'll be able to try something with a little less pitch and see how it likes it.

[srislash]

Ahh, my bad. I blew up the logs pic and thought it was measured in secs not mins there. I have had good luck pitching down, my DF 35 just could not get stable with a X/M6 series on it. All kinds of rudeness, not all the time but if anything went off kilter off it went(or down it went). Same with the Pursuit. The M5's arte fine though.

[Make-a-Wake]

Hey Travis............just thought of something. On my 39" Mono (6s2p 1717) I tried a bunch of props to squeeze out the best speed...............and overall running/handling, went thru x445/x447/x450/x645......................and the best one was................drum roll................an x548! Yep, the little known 548 was the best, perfect combo of pitch and diameter.

[kfxguy]

Went run again. Was prepared, had three sets of batteries this time. Flipped it and bent the rudder on about the third pass. O well. Got the Daytona out at an attempt to hit 80 and that didn't hapoen either. Water wasn't flowing out the outlet. Must have got some dirt stuck in it. I tried driving around in circles for a bit and no dice. Didn't want to chance it so I packed it up too. Sometimes I just wanna pack it all up and sell it all except one or two boats and be done with it. Ugh. So now I gotta get another rudder. Ain't no straightening this one. Blah.

[kfxguy]

Btw, on 6s with the smaller prop it only went 64mph. Put the m447 I did last night on and it went 65. Wonder if longer trim tabs will help with the chine walk? That's why it flipped. I tried to stay in it and it flipped and hit hard. Landed right side up tho.

[flraptor07]

Btw, on 6s with the smaller prop it only went 64mph. Put the m447 I did last night on and it went 65. Wonder if longer trim tabs will help with the chine walk? That's why it flipped. I tried to stay in it and it flipped and hit hard. Landed right side up tho.

That's 10mph under your fastest and it only just started to chine walk then, wonder why it's chine walking at 65 now.

[kfxguy]

That's 10mph under your fastest and it only just started to chine walk then, wonder why it's chine walking at 65 now.

I dunno. I didn't change anything. Guess I gotta figure that out. I'm very agitated right about now. I've got some cheap, short trim tabs on it. Might help if I get some longer ones. I dunno.

http://i218.photobucket.com/albums/cc243/ltzguy/69EEE66A-3B57-4DAD-85D1-636574CC0105.jpg (http://s218.photobucket.com/user/ltzguy/media/69EEE66A-3B57-4DAD-85D1-636574CC0105.jpg.html)

[Luck as a Constant]

Patience Travis. Patience


Sent from my iPhone using Tapatalk

[Luck as a Constant]

I've actually found that turn find help stop chine walk.
It seems that at speed, if they're just above the water, when the rocking starts, the fin will touch and kinda push it back.
Jmtc
Kinda like training wheels


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[kfxguy]

I've actually found that turn find help stop chine walk.
It seems that at speed, if they're just above the water, when the rocking starts, the fin will touch and kinda push it back.
Jmtc
Kinda like training wheels


Sent from my iPhone using Tapatalk

I'll put them on....

[flraptor07]

Travis, how long was that rudder?

[kfxguy]

O crap. I just remembered I did do something. I rounded the bottom of the rudder this morning. Hmmm. Just a very little tho. Hard to think that would make it chine walk earlier. I won't touch the other rudder. If someone has a rudder like this they would sell....



http://i218.photobucket.com/albums/cc243/ltzguy/831F6171-407A-46C3-9AA0-D5F6DEC1F276.png (http://s218.photobucket.com/user/ltzguy/media/831F6171-407A-46C3-9AA0-D5F6DEC1F276.png.html)

[kfxguy]

Travis, how long was that rudder?

4" according to the description

[Spartanator]

Ouch on the rudder. I am not sure what Keith has rated the hull for (power or speed wise) so I cannot say your pushing the limits of it but it's hard to get hulls this "small" tuned in. I have never ran "single" drive boats (the real ones) so I don't know much about it chine walk. I bet you if you bring that strut up a tad it will help, you may lose speed but at least it doesn't chine walk. I am going to get some long tabs for mine (30mmx50mm). I will be getting these: http://www.offshoreelectrics.com/proddetail.php?prod=ose-83020

When we did poker runs the smaller (36' and below) boats with longer tabs always seemed to handle better. If your getting irritated with it just shelf it for a while, there was a point where I left OffShore running for a while (a month) but I missed hearing the motors and 100+ on a hot day.



Travis, how long was that rudder?

What length rudder would you use if you were doing the same build as Travis? I am curious as I have one of these hulls on the way. Should be here Monday....

[flraptor07]

4" according to the description

I think I'd take about half the distance to the pickup off, make it about 3 1/2"

[Make-a-Wake]

Sorry for your mishap.........I just noticed from your rudder pic that your trim tabs are very far inward, and narrow...............that can cause the chine issues. I offer the suggestion to get wider tabs and/or put them farther out..........that where I run them on my monos with no issues. Your tabs(outer edge) only extend about halfway out from the center to the edge of the transom. Mine go at least 2/3's of the way to the outer edge of the tab. My 2 cents........ Hope you get everything sorted out..........hate that happened.

[kfxguy]

Tyler....

The rudder I have is the same one Keith is using. Should be good for this size hull. Yesterday I raised the strut up several times and a good bit too, still chine walked just as much. My trim tabs are pretty short so I may try some different ones. I'm going to put turn fins on it as it's supposed to have them anyway. It may just want a different prop. I'll keep trying. I'm just agitated right now because I'm tired. I stayed out I the shop till 2 am. I was working on a guy's cheetah, the lehner Rivercat and my 4s Rivercat. Then I got woke up early this morning to do yard work. I'm just tired and not in the best of moods.

[Spartanator]

Tyler....

I feel like I am in trouble.... lol

I saw that you raised the strut but I wasn't sure how much. I haven't looked much at your trim tab setup but if they are too close to the V then it will do exactly what Wake Maker said. I have some nice ones from OSE that are for larger builds but they may help you.

http://www.offshoreelectrics.com/proddetail.php?prod=ose-83022

If you want me to send them to you so you can play with them let me know. I haven't got the hull yet so I am unsure if they even fit on the transom.... lol

[kfxguy]

I've been reading up on chine walking. Not much info on rc boats. Little bits here and there. Do I've been reading up on 1:1 boats and what they do. Here's some highlights:

1) happens easier in calm water (water was like glass today)
2) longer trim tabs help
3) sometimes more blades on the prop helps
4) angle of trim tabs help
5) slack in steering is one major factor, the main reason a lot of boats do it
6) raising the prop usually helps. In my case it really didn't.


So there's a few ideas for me. I'll get it lined out eventually.

[kfxguy]

I think I'd take about half the distance to the pickup off, make it about 3 1/2"



Why would you shorten it? Wouldn't that make it chine walk more? Here's a side view...



http://i218.photobucket.com/albums/cc243/ltzguy/1C091A27-CA96-4495-BB89-B6A5C582F783.jpg (http://s218.photobucket.com/user/ltzguy/media/1C091A27-CA96-4495-BB89-B6A5C582F783.jpg.html)

[kfxguy]

Here's what the tabs look like from the bottom. I guess I'm going to order some longer and wider ones.

http://i218.photobucket.com/albums/cc243/ltzguy/A8DA985E-0E80-4C3C-AF12-E6F0459FAF0E_1.jpg (http://s218.photobucket.com/user/ltzguy/media/A8DA985E-0E80-4C3C-AF12-E6F0459FAF0E_1.jpg.html)

[Spartanator]

For some reference here is a 11 year old 38' Gun currently for sale with Pier 57:
http://tapatalk.imageshack.com/v2/15/04/05/7506c5cc3f2d2a9be1afdb3fd560cd90.jpg

This one only has twin 525's so I am not sure if trim tab placement differs from a model with twin 1350's or 700's but you get the idea on placement.

[srislash]

Tyler....

The rudder I have is the same one Keith is using. Should be good for this size hull. Yesterday I raised the strut up several times and a good bit too, still chine walked just as much. My trim tabs are pretty short so I may try some different ones. I'm going to put turn fins on it as it's supposed to have them anyway. It may just want a different prop. I'll keep trying. I'm just agitated right now because I'm tired. I stayed out I the shop till 2 am. I was working on a guy's cheetah, the lehner Rivercat and my 4s Rivercat. Then I got woke up early this morning to do yard work. I'm just tired and not in the best of moods.
Travis, trim tabs were the ONLY way I could get my 35" DF settled. I tried everything for the better part of a year to not run them as I did not want the drag but... They were the ticket. These are mine http://www.offshoreelectrics.com/proddetail.php?prod=ose-80070
Oh, and no X6 series props.

[flraptor07]

Why would you shorten it? Wouldn't that make it chine walk more? Here's a side view...



http://i218.photobucket.com/albums/cc243/ltzguy/1C091A27-CA96-4495-BB89-B6A5C582F783.jpg (http://s218.photobucket.com/user/ltzguy/media/1C091A27-CA96-4495-BB89-B6A5C582F783.jpg.html)

Nope, the longer rudder tends to get osilation and flex, and I see something else from that side view. Your rudder looks like it's tucked under, it needs to be at least parallel with the transom or very slightly kicked out. Trim tabs need to be as close to the strut as you can get them, when they are to the outside they do nothing when the boat is aired out. That's the whole point in having them is to adjust the ride atitude and stability when the boat is aired out.

[Peter A]

Here's what the tabs look like from the bottom. I guess I'm going to order some longer and wider ones.

http://i218.photobucket.com/albums/cc243/ltzguy/A8DA985E-0E80-4C3C-AF12-E6F0459FAF0E_1.jpg (http://s218.photobucket.com/user/ltzguy/media/A8DA985E-0E80-4C3C-AF12-E6F0459FAF0E_1.jpg.html)

Hi Travis, try swapping the trim tabs side to side. The agled side would be better inside and it will make the tabs sit slightly wider.

[flraptor07]

Another thing is that rounded leading edge leaves a little blunt edge at the bottom if anything you want to round the trailing edge and you can try shortening the trailing edge about a 1/8" and angle it to the leading edge leaving the leading edge alone that way you know for sure the rudder isn't causing any lift. Lift in the rear can cause chine walking.

[flraptor07]

Hi Travis, try swapping the trim tabs side to side. The agled side would be better inside and it will make the tabs sit slightly wider.

Ditto, deffinetly the angled side in...

[Make-a-Wake]

Don't shorten your rudder, I run the LONG ones and they sure make it rock solid. If you decide to swap tabs and move them out you can utilize the outer hole in your transom for the new "inside" hole on the tabs moving them outward.

Here's a pic of my 39" mono rear end, note how the outer edge of my tabs(duals each) are 2/3 of the way out from the centerline of the hull.

[flraptor07]

Don't shorten your rudder, I run the LONG ones and they sure make it rock solid. If you decide to swap tabs and move them out you can utilize the outer hole in your transom for the new "inside" hole on the tabs moving them outward.

Here's a pic of my 39" mono rear end, note how the outer edge of my tabs(duals each) are 2/3 of the way out from the centerline of the hull.

All I'm gonna say is you're not trying to run 80mph, Travis is... Different rules apply

[Make-a-Wake]

There is a point of too much speed, but he hasn't quite reached it..................if anything he needs more stability than I have on mine..........I'm hittin 67, not 30 FYI.

What are the rules.......enlighten me please.

[kfxguy]

Good stuff guys. I'm all for the ideas and willing to try them. At the moment my plan of attack is to get some longer and maybe a tad wider trim tabs. I just haven't found the ones I want yet.

[kfxguy]

There is a point of too much speed, but he hasn't quite reached it..................if anything he needs more stability than I have on mine..........I'm hittin 67, not 30 FYI.

What are the rules.......enlighten me please.

I will say this, on 6s which has been 69.xx a few times, it's smooth and stable...but when I pass the 70 mark it starts acting funny so something is going on

[flraptor07]

There is a point of too much speed, but he hasn't quite reached it..................if anything he needs more stability than I have on mine..........I'm hittin 67, not 30 FYI.

What are the rules.......enlighten me please.

I'm not going to get into a big argument with you but you're wrong about the trim tabs. For instance if you move the tabs out like you say to do, what exactly are they doing when the hull is aired out?

[keithbradley]

Btw, on 6s with the smaller prop it only went 64mph. Put the m447 I did last night on and it went 65. Wonder if longer trim tabs will help with the chine walk? That's why it flipped. I tried to stay in it and it flipped and hit hard. Landed right side up tho.

That's WAAAYYY better. it's probably running a lot looser with the smaller prop, hence the chine walk. Did you try moving the tabs down a little?

My math says it should go 66mph with a x447 on 6s...you went 64mph.
Same math says 77mph with a x648 on 6s...you went 69mph.

The first one is by far a more efficient setup and will likely get you the same 75-76mph on 7s, with a MUCH lower current draw.

It would be worth it to try a 3 blade prop too. I don't recall what all they make in normal rotation. If it was a twin setup the logical choice would be x450/3, but you have more options since you're not limited to counter-rotating sizes.

[Make-a-Wake]

I'm not going to get into a big argument with you but you're wrong about the trim tabs. For instance if you move the tabs out like you say to do, what exactly are they doing when the hull is aired out?

No your not, cuz I'm not gonna.............I'm wrong hmmmmmm? I guess I should just quit the forum since you can surely handle all the thread questions with the exact answers. I've seen some of your boats run on Bills RCG threads, not hugely impressed. You have had your share of mishaps and setup problems. You wanna go there? Ask Bill if I know how to set up a boat, curious to hear his answer.

I simply know how to set up fast monos and am giving Travis some pointers while all you are doing is criticizing others posts...........whatever dude.

BTW, my tabs are double wides, start inward and extend much farther out.......I simply have wider tabs.

[tazman]

I've been reading up on chine walking. Not much info on rc boats. Little bits here and there. Do I've been reading up on 1:1 boats and what they do. Here's some highlights:

1) happens easier in calm water (water was like glass today)
2) longer trim tabs help
3) sometimes more blades on the prop helps
4) angle of trim tabs help
5) slack in steering is one major factor, the main reason a lot of boats do it
6) raising the prop usually helps. In my case it really didn't.


So there's a few ideas for me. I'll get it lined out eventually.

That is dead on travis. My 33' checkmate has twin650's and will start to chine walk on glass smooth water and the only way to stop it is a little bit of down tab. Chop does not do it at all. Boat runs 103 in chop and 98 on glass. Chine walk is when the boat rides high on the vee and starts to rock back and forth to try and find the water again that is why is is worse in single engines because of the torque of the motor . With your boat being a single alittle down tab or a little kickout on the rudder would help the torque roll to the right causing the boat to walk. Longer tabs are a big help. They touch the water sooner with less angle to a short one.

[Spartanator]

As far as I know, he is the only guy running this hull so he has to play with it.

Everyone has hiccups, some bigger than others. Not going to take sides since I have never shook anyone's hand here.

I personally think that the trim tabs should only be close together if purely for speed runs as they could be used as a ride pad. If they are used for slightly choppy water I believe they should be outwards.

[flraptor07]

No your not, cuz I'm not gonna.............I'm wrong hmmmmmm? I guess I should just quit the forum since you can surely handle all the thread questions with the exact answers. I've seen some of your boats run on Bills RCG threads, not hugely impressed. You have had your share of mishaps and setup problems. You wanna go there? Ask Bill if I know how to set up a boat, curious to hear his answer.

I simply know how to set up fast monos and am giving Travis some pointers while all you are doing is criticizing others posts...........whatever dude.

BTW, my tabs are double wides, start inward and extend much farther out.......I simply have wider tabs.

All you did was attack my builds, you didn't answer the question. I never claimed to be a expert and I deffinetly have my share of set up issues. You never said anything about wider tabs you just told travis to move his out, for that you're wrong! ON THE TABS I'm just stating what I know to be fact, when the hull is aired out the tabs on the outside from about the center of the transom out do almost nothing. I'm not criticizing other posts just one part of yours, the only thing I said you're wrong about is the tabs nothing more..

[tazman]

As far as I know, he is the only guy running this hull so he has to play with it.

Everyone has hiccups, some bigger than others. Not going to take sides since I have never shook anyone's hand here.

I personally think that the trim tabs should only be close together if purely for speed runs as they could be used as a ride pad. If they are used for slightly choppy water I believe they should be outwards.
Agreed. The closer they are to the vee the more you lift the boat. A little bit out and just touching the water would at as a stabilizer without a lot ot lift and I am just going by what I have seen on the big powerboats. It always doesn't scale down to our hobby because of the speeds. This would be about 700mph boat at full scale! Lol

[Luck as a Constant]

Some interesting theories in here....


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