The Voracity tuning thread

[kfxguy]

I promised some guys in the voracity thread I'd create a thread on tuning and modding this awesome rtr boat I just got. Well here it is. Here's my plans:

First I want to see if there's anything to be had with different props. I also want to see what we can do with tweaking the stock prop (which is a good prop to begin with. There might be a few other tweaks I'm gonna try. I also want to encourage everyone else to share their findings. This thread isn't just for me, it's for everyone.

First things first. I already know there's a gain to be had with timing. However, the factory Esc (as good as it is) doesn't like it. So I had the perfect candidate to throw in there and get to testing. I may put the factory one back after I'm done testing, but just for safety's sake I'm going to be using a little higher amp Esc. While I was putting the Esc in I went ahead and changed the motor bullets to 6.5mm castle bullets. I mainly did this because it makes swapping things simple because I use these on everything. Next I used castle 6.5mm green connectors. That's what most of my batteries have so why not?

I plan on doing some running this weekend if the rain stops. Here she is after I made some changes.....I re routed the cooling lines and had to reglue the trim ring for the cooling hose. It felt loose and was moving a little as I was messing with cooling lines. No big deal, pulled it out and smeared a little silicon on it to hold it in place and seal it.


http://i218.photobucket.com/albums/cc243/ltzguy/C46DFB24-539A-4515-BBFB-8A742AB16E61.jpg (http://s218.photobucket.com/user/ltzguy/media/C46DFB24-539A-4515-BBFB-8A742AB16E61.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/6AEAB893-252D-4E33-B6A1-0D6682E5B8E4_1.jpg (http://s218.photobucket.com/user/ltzguy/media/6AEAB893-252D-4E33-B6A1-0D6682E5B8E4_1.jpg.html)

[shua]

:popcorn2:

[arrover]

Thanks for starting this thread. I'll be here to learn and hopefully contribute something...

[Tamelesstgr]

Subscribed

[paulfromtulsa]

Subscribing

[hobby_man]

how do I Subscribe to this thread

I too had to re glue the bulk head fitting for the water lines. I re routed my water lines and polished the propeller

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[hobby_man]

I promised some guys in the voracity thread I'd create a thread on tuning and modding this awesome rtr boat I just got. Well here it is. Here's my plans:

First I want to see if there's anything to be had with different props. I also want to see what we can do with tweaking the stock prop (which is a good prop to begin with. There might be a few other tweaks I'm gonna try. I also want to encourage everyone else to share their findings. This thread isn't just for me, it's for everyone.

First things first. I already know there's a gain to be had with timing. However, the factory Esc (as good as it is) doesn't like it. So I had the perfect candidate to throw in there and get to testing. I may put the factory one back after I'm done testing, but just for safety's sake I'm going to be using a little higher amp Esc. While I was putting the Esc in I went ahead and changed the motor bullets to 6.5mm castle bullets. I mainly did this because it makes swapping things simple because I use these on everything. Next I used castle 6.5mm green connectors. That's what most of my batteries have so why not?

I plan on doing some running this weekend if the rain stops. Here she is after I made some changes.....I re routed the cooling lines and had to reglue the trim ring for the cooling hose. It felt loose and was moving a little as I was messing with cooling lines. No big deal, pulled it out and smeared a little silicon on it to hold it in place and seal it.


http://i218.photobucket.com/albums/cc243/ltzguy/C46DFB24-539A-4515-BBFB-8A742AB16E61.jpg (http://s218.photobucket.com/user/ltzguy/media/C46DFB24-539A-4515-BBFB-8A742AB16E61.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/6AEAB893-252D-4E33-B6A1-0D6682E5B8E4_1.jpg (http://s218.photobucket.com/user/ltzguy/media/6AEAB893-252D-4E33-B6A1-0D6682E5B8E4_1.jpg.html)

whats the reason for 2 3s batteries vs 1 6s? personal preference?

[kfxguy]

whats the reason for 2 3s batteries vs 1 6s? personal preference?

It came like that. Also in my opinion, I feel like the balance of the boat would be better. Weight lower in the hull is always better.

[kfxguy]

I got some info for you guys! I went ran it this evening real quick. I wanted to get a base line. Keep in mind I had it running wet but only changed props (once I got it running smooth) to see if there was a speed difference. I didn't get video because my son didn't want to come. I was in a hurry too. Bats weren't charged all the way either. But still.

So the stock prop, I had to adjust the batts and trim tabs to stop the boat from porpoising badly. After running it a bit, adjusting etc this is what I got:
1) stock untouched prop 45mph
2) m645 (basically a stock prop but s/b and detounged) 48.5mph
3) abc 1914 51.0mph


Edit. I forgot to put the temps. These were measured after cutoff voltage (3.75v) and using the big prop running wet:

Motor. 103.4f
Esc. 110.9f
Batt connectors. 94.5f
Batteries. 101.2f

[kfxguy]

Stock

http://i218.photobucket.com/albums/cc243/ltzguy/21AF3C84-45A3-420D-9AF1-38523D389D64.jpg (http://s218.photobucket.com/user/ltzguy/media/21AF3C84-45A3-420D-9AF1-38523D389D64.jpg.html)

M645

http://i218.photobucket.com/albums/cc243/ltzguy/131C0CB0-9D32-402D-82C4-84BE8C71D1B8_2.jpg (http://s218.photobucket.com/user/ltzguy/media/131C0CB0-9D32-402D-82C4-84BE8C71D1B8_2.jpg.html)


And abc 1914.

http://i218.photobucket.com/albums/cc243/ltzguy/F6360372-10EB-485C-9775-2E6BE1F6118B_2.jpg (http://s218.photobucket.com/user/ltzguy/media/F6360372-10EB-485C-9775-2E6BE1F6118B_2.jpg.html)


Water was so perfect today!!!

http://i218.photobucket.com/albums/cc243/ltzguy/77A2CCBB-D075-4E68-AC49-19E40AD88C69_1.jpg (http://s218.photobucket.com/user/ltzguy/media/77A2CCBB-D075-4E68-AC49-19E40AD88C69_1.jpg.html)

[jj2003]

how do I Subscribe to this thread?


Your subscribed by posting in the thread ;)

[paulfromtulsa]

I got some info for you guys! I went ran it this evening real quick. I wanted to get a base line. Keep in mind I had it running wet but only changed props (once I got it running smooth) to see if there was a speed difference. I didn't get video because my son didn't want to come. I was in a hurry too. Bats weren't charged all the way either. But still.

So the stock prop, I had to adjust the batts and trim tabs to stop the boat from porpoising badly. After running it a bit, adjusting etc this is what I got:
1) stock untouched prop 45mph
2) m645 (basically a stock prop but s/b and detounged) 48.5mph
3) abc 1914 51.0mph

Is the abc 1914 1.9" diameter with a 1.4 pitch?

[kfxguy]

Is the abc 1914 1.9" diameter with a 1.4 pitch?

Yes. Essentially 48mm. I didn't have a finished 1815 (45.7mm) to compare. I suspect it being faster. Find out Saturday.

[ChevyPrerunner]

Subscribed :buttrock:!

[montymike]

Subscribed :buttrock:!

Suspect that's the prop Going to use just waiting on your results.

[montymike]

:doh:
Yes. Essentially 48mm. I didn't have a finished 1815 (45.7mm) to compare. I suspect it being faster. Find out Saturday.

This one my bad wrong quote

[arrover]

Thanks for the info kfxguy! I'm going to restate my numbers in this thread just so the info is here.

On 6S:
Stock, untouched prop - 48.7mph
x645 - 51.0
x642 - 42.9

On 4S:
Stock, untouched prop - 32.8
x645 - 32.8
x642 - 30.0

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[arrover]

It sounds like some of the Voracitys are shipping with slightly incorrect waterline routing. The front waterline on the ESC is very short and is on the verge of being kinked. Also, the water should exit the top of the motor to prevent any air from getting trapped inside the cooling jacket and decreasing the cooling.

- Take the short hose off the front of the ESC.
- Remove the medium length hose that exits the ESC and goes to the top of the motor.
- Disconnect the hose on the other end of the motor (no need to disconnect it from the hull fitting.
- Take the short hose and connect it from the ESC exit to the bottom motor fitting.
- Take the medium length hose and put it on the front of the ESC in the same U shape as before.
- Connect the hose from the hull fitting to the top of the motor.

Now the water comes out of the top of the motor and exits the boat. The hose lengths fit perfectly, the motor should cool better, and the ESC loop isn't kinked anymore. The new routing is shown below.
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[kfxguy]

I forgot to add. It seemed very very sensitive to trim tab position. When I had them flat, it would not bounce. And slight angle up and the nose would porpoise. Almost flipped it a couple times.




I'm having a hard time with this. I want to keep this thing as stock as possible but then I have drawers in my tool box full of motors and escs. I guess I'm gonna have to wait. But I'm getting antsy.

[montymike]

:thumbup:Good info thanks

[Xtreme Thunder]

Subscribed!

[paulfromtulsa]

Yes. Essentially 48mm. I didn't have a finished 1815 (45.7mm) to compare. I suspect it being faster. Find out Saturday.

why do you suspect that the 1815 will be faster than the 1914? its a smaller prop but slightly more pitch is that why? thanks for all the help

[kfxguy]

why do you suspect that the 1815 will be faster than the 1914? its a smaller prop but slightly more pitch is that why? thanks for all the help


Yes plus it has more blade rake.

[kfxguy]

Guys go back and read post #9. I edited it with some important info.

[paulfromtulsa]

Yes plus it has more blade rake.

what do you think about an octura x648? (with a 180a esc of course) its the same diameter as the 1914 but has a 1.6 pitch. i think that prop might be maxxing out the boat.

[Darin Jordan]

I'll be interesting in seeing what you guys come up with...

Are any of you monitoring the temps on your motor wire plugs??

[kfxguy]

I'll be interesting in seeing what you guys come up with...

Are any of you monitoring the temps on your motor wire plugs??


I checked them last night and iirc they were like 108ish. I did change connectors and the wires are pretty short.

[kfxguy]

what do you think about an octura x648? (with a 180a esc of course) its the same diameter as the 1914 but has a 1.6 pitch. i think that prop might be maxxing out the boat.


Personally I think that's too much prop and I think the abc with less pitch will beat it and pull less amps. But I'll find out. I have one of those too. And a m447 I need to try.

[paulfromtulsa]

Personally I think that's too much prop and I think the abc with less pitch will beat it and pull less amps. But I'll find out. I have one of those too. And a m447 I need to try.

That's great that you have all those props. I will wait for your results before I order one. Thanks

[kfxguy]

That's great that you have all those props. I will wait for your results before I order one. Thanks

I have pretty much everything that is popular. I used to squeak when it can to buying props but I don't anymore. I'm ordering a couple more today and I has some other abc stuff coming.

[Darin Jordan]

I have pretty much everything that is popular. I used to squeak when it can to buying props but I don't anymore. I'm ordering a couple more today and I has some other abc stuff coming.

It's time for you to stop dinking around and start getting into organized racing... You've played long enough! :cool2:

[kfxguy]

It's time for you to stop dinking around and start getting into organized racing... You've played long enough! :cool2:

I know I know. But there's no organized racing anywhere near here. There is a rc car track that dug a lake and was supposed to start racing but that hasn't happened yet. :(

[Darin Jordan]

I know I know. But there's no organized racing anywhere near here. There is a rc car track that dug a lake and was supposed to start racing but that hasn't happened yet. :(

I know a few people where that's the case... Well... at least you have a decent test pond!

[arrover]

I got a CNC 5014 today in the mail and ran it tonight. I don't know a ton about props but I picked it because the total pitch is 2.76 and I wanted to see what a CNC prop was like. Noticeable torque roll when you punch it but seemed to run pretty well and it hit 55.8mph! I pulled it in a bunch to check temps and so I wasn't running hard the entire time straight. On 4S it ran 38.1mph

batteries - 110ish
esc - 117-120
motor - 110
motor wires/connectors - 165
battery wires - 105

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[kfxguy]

I got a CNC 5014 today in the mail and ran it tonight. I don't know a ton about props but I picked it because the total pitch is 2.76 and I wanted to see what a CNC prop was like. Noticeable torque roll when you punch it but seemed to run pretty well and it hit 55.8! I pulled it in a bunch to check temps and so I wasn't running hard the entire time straight.

batteries - 110ish
esc - 117-120
motor - 110
motor wires/connectors - 165
battery wires - 105

Not bad for a cnc prop. What battery connectors are you using? What connectors on the motor?

[Brushless55]

I got a CNC 5014 today in the mail and ran it tonight. I don't know a ton about props but I picked it because the total pitch is 2.76 and I wanted to see what a CNC prop was like. Noticeable torque roll when you punch it but seemed to run pretty well and it hit 55.8mph! I pulled it in a bunch to check temps and so I wasn't running hard the entire time straight. On 4S it ran 38.1mph

batteries - 110ish
esc - 117-120
motor - 110
motor wires/connectors - 165
battery wires - 105

Very nice man !

[arrover]

The motor to ESC connectors are stock (I think they're 5.5mm?). The battery connectors I have changed to 5.5mm bullets. I guess I should have said that this is with the stock motor and ESC.

[paulfromtulsa]

I got a CNC 5014 today in the mail and ran it tonight. I don't know a ton about props but I picked it because the total pitch is 2.76 and I wanted to see what a CNC prop was like. Noticeable torque roll when you punch it but seemed to run pretty well and it hit 55.8mph! I pulled it in a bunch to check temps and so I wasn't running hard the entire time straight. On 4S it ran 38.1mph

batteries - 110ish
esc - 117-120
motor - 110
motor wires/connectors - 165
battery wires - 105

Wow that's a huge prop, almost 2 inches in diameter

[arrover]

Yes, and I think that's why it has more torque roll. I decided to try it because the pitch is 1.4 vs 1.6 on the common Octura props so the total pitch is supposed to be less than the stock prop.

[arrover]

I spent a couple hours today cleaning up a new M645. It's still not very sharp but I had enough at that point so I went out and ran it. 54.6mph on 6S and 36.8 on 4S (stock ESC and motor). If you punch it from a dead stop, it will spin for about two seconds and then it hooks up and takes off. The delay isn't really a big deal and is kind of fun to watch. It doesn't seem to come into play in turns. I think there's probably more speed in this prop if I had it sharper. That's just a guess though. P.S. I still don't have the option to attach pictures to my posts. Do you have to have a certain post count first?

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[zooma]

Sorry to hijack thread, but I am attempting to attach a .jpg that I've uploaded from my hard drive.

135928

There is an icon on the reply toolbar for inserting an image. You don't have that?

[arrover]

I'm the one that hijacked it. No worries. No, I only have the option to insert an image from a URL. Same thing in advanced reply.

[kfxguy]

Went ran it again today. Made sure batts were fully charged. I made no changes.


Abc 1914 58.2mph
Abc 1815 56.9mph
Abc 1915 53.9mph

[zooma]

Interesting. Larger diameter at lower pitch came out ahead. I would have expected the 1815 to be the leader.

[montymike]

Important what's the amp draw on each . Could u run any of these on Stock e.s.c.

[kfxguy]

Important what's the amp draw on each . Could u run any of these on Stock e.s.c.


I'll put a data logging Esc in it. I'm purposely trying to over prop it to be honest. I'm testing an Esc for someone to test its limits.

[montymike]

Seaking 180a? What Are temps

[shua]

I finally maidened mine today.

Set up is this:
SeaKing 180
Hobbywing BEC
Speed Master billet trim tabs
Kinetic 4" rudder (for breakaway feature)
Two part foam and reinforcements Adding 1 lb to the hulls overall weight.
on 6s

M545 52mph
ABC 1815 59.1mph

[shua]

My temps are low on the SK180

[montymike]

I finally maidened mine today.

Set up is this:
SeaKing 180
Hobbywing BEC
Speed Master billet trim tabs
Kinetic 4" rudder (for breakaway feature)
Two part foam and reinforcements Adding 1 lb to the hulls overall weight.
on 6s

M545 52mph
ABC 1815 59.1mph

Sweet take much modification?

[kfxguy]

Important what's the amp draw on each . Could u run any of these on Stock e.s.c.


I'll find out but I'd bet the 1914 would be safe. It's less prop than the m645

[Brushless55]

I finally maidened mine today.

Set up is this:
SeaKing 180
Hobbywing BEC
Speed Master billet trim tabs
Kinetic 4" rudder (for breakaway feature)
Two part foam and reinforcements Adding 1 lb to the hulls overall weight.
on 6s

M545 52mph
ABC 1815 59.1mph

What timing are you running with that esc /
thanks

[kfxguy]

Ok, I just did some free mods and just realized the trim tabs were pouting a bit down and one more than the other. Explains why I had to trim the rudder a lot to the left. It's so close to 60 at this point, I'm pretty sure my few mods will put it in the 60's. Here what I did:

Sanded the ride area with 400 grit (paint is super super thin so keep that in mind if you do it....you will sand through in a couple of seconds)

Sharpened the rudder
Sharpened turn fins. One of mine had a slight gouge (my fault I'm sure) so I fixed that.


Charging batteries. Stay tuned.

[shua]

What timing are you running with that esc /
thanks

15 deg

[Brushless55]

15 deg

Thanks

[shua]

http://images.tapatalk-cdn.com/15/08/23/e7510708fa606ffb3344a4ddf252a571.jpg

Pic of mine with hardware upgrades.

[arrover]

Look great. Lot of excellent info in this thread already. Did those trim tabs and rudder match up to the stock mounting holes by chance?

[shua]

Look great. Lot of excellent info in this thread already. Did those trim tabs and rudder match up to the stock mounting holes by chance?
Nope. Not even close. Lol. But at least I was able to hide the original holes easily.

[kfxguy]

Ok, I just did some free mods and just realized the trim tabs were pouting a bit down and one more than the other. Explains why I had to trim the rudder a lot to the left. It's so close to 60 at this point, I'm pretty sure my few mods will put it in the 60's. Here what I did:

Sanded the ride area with 400 grit (paint is super super thin so keep that in mind if you do it....you will sand through in a couple of seconds)

Sharpened the rudder
Sharpened turn fins. One of mine had a slight gouge (my fault I'm sure) so I fixed that.


Charging batteries. Stay tuned.


This trip was a bust. I ran the wrong prop. Wasn't paying attention. Just had too much going on. Still ran high 50's. Post video later.

[arrover]

Nope. Not even close. Lol. But at least I was able to hide the original holes easily.

That's kind of what I expected to hear. Really awesome though!

[shua]

That's kind of what I expected to hear. Really awesome though!

Thanks! The trim tabs are totally worth it. Made dialing in the boat very easy. And Bonus... They look awesome!

[paulfromtulsa]

OK so, the best highest speed prop so far is the abc 1815 at 59mph? Kfxguy when do you think you will be able to run your other props?

[shua]

I have a Dasboata abc 1914 on the way that I will be testing next weekend....

[kfxguy]

OK so, the best highest speed prop so far is the abc 1815 at 59mph? Kfxguy when do you think you will be able to run your other props?


I'll run it again more this coming weekend. I will tell you this, the prop Diameter vs depth makes a difference too. You can't really adjust depth on this boat. The 1815 didn't fair so well on my boat for some reason.

[kfxguy]

Here's a short video as promised. My 6 year old videoed it too. He did an excellent job too!





http://youtu.be/IK0Suwy9lHs

[montymike]

Waiting for mine FedEx mix up,be here Tuesday. Wondering if this thing might like more diameter and less pitch like m447 or x448 octura hmmmm.

[shua]

Waiting for mine FedEx mix up,be here Tuesday. Wondering if this thing might like more diameter and less pitch like m447 or x448 octura hmmmm.
Mike I have an M447 I can try this weekend as well.

[paulfromtulsa]

yes im really curious on how the boat will do on a m447 or a x646-x648

[kfxguy]

yes im really curious on how the boat will do on a m447 or a x646-x648

I'll test that for you in the next few days

[montymike]

:banana:Can't wait to run mine.

[montymike]

:wink:
I forgot to add. It seemed very very sensitive to trim tab position. When I had them flat, it would not bounce. And slight angle up and the nose would porpoise. Almost flipped it a couple times.




I'm having a hard time with this. I want to keep this thing as stock as possible but then I have drawers in my tool box full of motors and escs. I guess I'm gonna have to wait. But I'm getting antsy.
Ditto

[paulfromtulsa]

I'll test that for you in the next few days

Thank you! I want to order a prop so bad but going to wait for your test

[kfxguy]

Thank you! I want to order a prop so bad but going to wait for your test

I'll be running it again this weekend. In my opinion a x648 will be too much pitch. I bet a m447 is going to work well.

[paulfromtulsa]

I'll be running it again this weekend. In my opinion a x648 will be too much pitch. I bet a m447 is going to work well.

When you say the x648 is too much pitch what will that cause the boat to do?

[kfxguy]

When you say the x648 is too much pitch what will that cause the boat to do?

Likely burn something up

[arrover]

Likely burn something up

Are you thinking that it wouldn't work with the stock ESC (I think that's what Rafael has said already)? If the ESC was upgraded, would the x648 cause the stock motor problems? Sorry, I'm just trying to learn how these systems work together.

[kfxguy]

Yea the x648 is a bit too much for the stock Esc. Maybe with an upgraded Esc it would be ok but if I had to guess it won't be the fastest prop. I haven't seen it work well on anything yet. Many better choices than that prop too.

[TheShaughnessy]

does anybody have an x646/3 converted to m series? maybe slightly round the tips, would like to hear how that prop runs, might be a little hot but, some monos like 3 bladed props.

id also like to see what you get from an m447/3 not sure if octura makes one but you can always detongue a x447/x

[arrover]

Thanks KFX. Very interesting. I think you said you're testing a ESC in your Voracity. How many amps is it?

[Darin Jordan]

id also like to see what you get from an m447/3 not sure if octura makes one but you can always detongue a x447/x

I can tell what you get with that with the factory ESC on 6S.... dangling connectors on the motor leads... at least with the X447/3 that I normally run on my IM31 w/1500KV on 4S. :doh:
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[TheShaughnessy]

I can tell what you get with that with the factory ESC on 6S.... dangling connectors on the motor leads... at least with the X447/3 that I normally run on my IM31 w/1500KV on 4S. :doh:
136131

what makes you say that? a x447/3 has less overall pitch than a x645 which people say they are running. 6s is greek to me but it seemed like it was in line with other props folks are running. Not saying run it for 6 min straight but I would think you could make a few passes.

Your 447 is pitched up pretty good by the looks of it.

[Darin Jordan]

Pretty simple math, really...

6S= 6×3.7V= 22.2v. That's assuming some excellent cells.

22.2V x 1650KV = 36,630 RPM

An X447/3 is listed at 2.590". Assuming that a well prepped stock prop has around 30% Slip...

The Theoretical speed with this prop at that RPM is 61.xxx MPH.

Since I haven't read anyone getting there yet, and most are trying even higher pitched props, one can assume that the lost speed is going somewhere. It's usually in heat.

Heat kills. :-)

Plus.... I was one of the original testers and I tried it with the expected results. Solder in the bottom of the hull and desoldered motor leads.

Yes... that prop has considerably more pitch and less slip.

[kfxguy]

Thanks KFX. Very interesting. I think you said you're testing a ESC in your Voracity. How many amps is it?

150a. It's been good so far.

[montymike]

150a. It's been good so far.

What brand?

[Rafael_Lopez]

Pretty simple math, really...

6S= 6×3.7V= 22.2v. That's assuming some excellent cells.

22.2V x 1650KV = 36,630 RPM

An X447/3 is listed at 2.590". Assuming that a well prepped stock prop has around 30% Slip...

The Theoretical speed with this prop at that RPM is 61.xxx MPH.

Since I haven't read anyone getting there yet, and most are trying even higher pitched props, one can assume that the lost speed is going somewhere. It's usually in heat.

Heat kills. :-)

Plus.... I was one of the original testers and I tried it with the expected results. Solder in the bottom of the hull and desoldered motor leads.

Yes... that prop has considerably more pitch and less slip.
It says a lot for the ESC that it didn't burn up, and the solder on the motor connectors gave out first, with that large 3 blade prop on 6s. I bet it was really fast for a very short time, lol.:lol:


Good to see all the stuff happening in both this, and the other thread.

[Darin Jordan]

It says a lot for the ESC that it didn't burn up, and the solder on the motor connectors gave out first, with that large 3 blade prop on 6s. I bet it was really fast for a very short time, lol.:lol:

It was certainly "FUN" with that prop. The ESC held up just fine! :buttrock:

[montymike]

Should have no problem with a m447 or a x448

[montymike]

Ran my boat on maiden voyage s&b stock prop but tossed it in my prop box for backup. Went with m447 boat Ran flawlessly. Only thing I did was sharpen rudder, turn fins. Ran batteries(revolectric) 3s 5500 silver 1/2 in from rear did not touch any other adjustment. Did not GPS all electronic were cool. Love this boat...

[paulfromtulsa]

Ran my boat on maiden voyage s&b stock prop but tossed it in my prop box for backup. Went with m447 boat Ran flawlessly. Only thing I did was sharpen rudder, turn fins. Ran batteries(revolectric) 3s 5500 silver 1/2 in from rear did not touch any other adjustment. Did not GPS all electronic were cool. Love this boat...

Did the boat seem faster with the stock prop or the 447?

[montymike]

Don't know did not run stock prop, sorry will next run...

[paulfromtulsa]

OK the weekend is over guys. Did anybody do any prop testing?

[kfxguy]

OK the weekend is over guys. Did anybody do any prop testing?


Sorry I didn't get to. Had to work Saturday and today I had a whole bunch of stuff to get done around the house. I also had to install a brake control and the proper wiring for my new rv I'm picking up tomorrow. But....this Labor Day weekend I'll be at an rv park with a nice lake and I'm bringing the voracity.

On a side note. I took the Esc I was testing out (had a falling out with the person I was testing it for so I'm sending it back) and I put a nice data logging Esc in the boat so I can give you guys more accurate data. Just hang in there till the weekend. As long as my phone works where I'm going, I'll be posting my data.

[kfxguy]

Here's some pics of the new Esc. Man the wires were juuuust long enough. It's an mgm 25035-3

O and btw....this Esc is 8s capable. Muhahahahaha!


http://i218.photobucket.com/albums/cc243/ltzguy/5749D580-84D9-48C5-A480-1E5B04BF00D9.jpg (http://s218.photobucket.com/user/ltzguy/media/5749D580-84D9-48C5-A480-1E5B04BF00D9.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/D6C35355-D4B5-494E-B715-B960FAB5D9FC.jpg (http://s218.photobucket.com/user/ltzguy/media/D6C35355-D4B5-494E-B715-B960FAB5D9FC.jpg.html)

[Rafael_Lopez]

Please keep me posted on how that motor holds up to 8s....just out of curiosity:wink:

I'm going to go test other projects later this week and I may take my V-36 with me and put 8s to it just to see what happens; not with the stock ESC of course.:flame42:

[kfxguy]

Please keep me posted on how that motor holds up to 8s....just out of curiosity:wink:

I'm going to go test other projects later this week and I may take my V-36 with me and put 8s to it just to see what happens; not with the stock ESC of course.:flame42:


Will do! I'm gonna run 7s first to see if the hull will handle the speed. I hope to gets lots of running this weekend.

[shua]

Some prop tests this weekend. All were with fresh pairs of 3s for 6s total.

http://images.tapatalk-cdn.com/15/08/31/f7db02cb26d4483f35de123499b3a5e4.jpg
http://images.tapatalk-cdn.com/15/08/31/a5b311a13de1f34ecaf9b5b5d7269c03.jpg
The ABC 1914 had ALOT of cavitation

[shua]

Three blade was fun. It has ALOT of bite!
CNC 4614/3
http://images.tapatalk-cdn.com/15/08/31/5d440aced8c3f30d26071427edd8441b.jpg

And still the fastest prop I have.
ABC 1815
http://images.tapatalk-cdn.com/15/08/31/0b0984f65253104bab09c99f01dd3623.jpg

[montymike]

I did not g.p.s. mine but found the m447 a good all around prop for this boat...

[Darin Jordan]

Three blade was fun. It has ALOT of bite!
CNC 4614/3
http://images.tapatalk-cdn.com/15/08/31/5d440aced8c3f30d26071427edd8441b.jpg


WHAT? You are running one of those "TOY BOAT" props??? :tt2:

That's the same prop (I got a pair) that I'll be running on my Cheetah Twin for the next testing... :wink:

[Brushless55]

Have you tried the 646/3 blade ?

[kfxguy]

What brand?

Fly color

[kfxguy]

Did the boat seem faster with the stock prop or the 447?

Don't worry man. Picked up my new camper yesterday and we are going to a campground with a nice lake for three days. I should get lots of running in for you!

[montymike]

Ha ,never heard of it. Asking because not many offerings in that amp rating.

[Brushless55]

Have you tried the 646/3 blade ?

has anyone tried this prop yet ??

[montymike]

Bet it would be fast as long as you used a 180a e.s.c.

[Brushless55]

Bet it would be fast as long as you used a 180a e.s.c.

I'm real curious to see some data logging on this boat :thumbup1:

[kfxguy]

I'm real curious to see some data logging on this boat :thumbup1:


I will be logging on my next runs (maybe today) but I won't use a 646/3 lol.

[Brushless55]

I will be logging on my next runs (maybe today) but I won't use a 646/3 lol.

That's cool
the stock prop has good runtimes and I bet does not pull to much :Peace_Sign:

[TheShaughnessy]

so 4614/3 was ok but a m447/3 will burn things down? If you round the tips it will condense the thrust cone and reduce the diameter which would make the specs just about identical except you lose the lowest pitch part of the blade that ultimately limits top speed. I'm still confused on why this is laughable. I will admit I don't run anything 6s but if my 4s boat can run that prop than I don't understand why a more efficient 6s boat couldn't do the same thing. I'm not saying it's a sport prop or anything but for a couple min at a time I would think it would survive. Oh well I have nothing empirical to back it up and no intention of getting a Voracity so I guess it doesn't really matter.

[kfxguy]

so 4614/3 was ok but a m447/3 will burn things down? If you round the tips it will condense the thrust cone and reduce the diameter which would make the specs just about identical except you lose the lowest pitch part of the blade that ultimately limits top speed. I'm still confused on why this is laughable. I will admit I don't run anything 6s but if my 4s boat can run that prop than I don't understand why a more efficient 6s boat couldn't do the same thing. I'm not saying it's a sport prop or anything but for a couple min at a time I would think it would survive. Oh well I have nothing empirical to back it up and no intention of getting a Voracity so I guess it doesn't really matter.

Respectfully id like to point something out. Just because a certain prop runs well on 4s does not mean it will play nice on 6s. 4s is approximately 24,400 rpm mildly loaded. You turn the same prop on 6a and that's 36,600 (yes over 12k rpm more). Do you really think the load wouldn't go up a bunch too? Just pointing that out because a lot of people don't consider that.

[TheShaughnessy]

4s at 2200 kv is the set up I was refering to, I should have included that. 32,560 vs 36,600. The latter being less amp hungry because it has a higher voltage.

Two completely different set ups so I do realize the comparison isn't exactly fair but neither is comparing a 36x50 to a much larger motor. I'm also comparing to a boat that is 4 inches shorter so again, not apples to apples.

[kfxguy]

I'm off camping but the lake looks pretty crappy. I have a small area I can run in but I'm not sure it's worth it. I'm going to run the shockwave in it first. There's pipes and stuff sticking up out the water. The shockwave has a break away rudder so I feel safer running it first. If everything goes we I'll run the voracity. I hate to sink it with a $450 Esc in it. Lol

[Brushless55]

Let us know bro !

[hobby_man]

136531136532136533136534136535
Boat is stock with the prop balanced and polished

[hobby_man]

136538

[kfxguy]

Ran it a couple times yesterday. Not quite sure why but it ran very slow. 44mph is all it could muster. I did change the strut position (without marking it like a dummy) and I'm sure that's what happened. Also in transport I think my trim tab position got screwed up. I really can't wait till ose has the billet trim tabs, I think those will be the best mod you could do to this boat. I'm seriously considering just getting the speed master ones because I don't want to wait. If I can I'm going to go run some more today but bring tools this time.

[paulfromtulsa]

i did some gps runs today and the best i got was 48mph with a prather 225 sharpened and balanced. i only got 44 with the stock prop untouched.

[arrover]

It seems like the stock prop may be hit or miss? Do you think the boat is running to wet? I trimmed mine up a hair from the way it came from the factory.

I sharpened and balanced an Octura X646 this afternoon and ran it just now. 53.9mph on 6s on the stock motor and ESC. I didn't have my 4s packs charged. Here are the temps after about 2/3rds of one set packs. Seems that things are getting a little hot. What are the max temps that I shouldn't exceed?

Capacitors on the ESC wires - 190
Motor connectors - 170
ESC - 135
Motor - 120
Batteries - 115 and 120

136619

[paulfromtulsa]

It seems like the stock prop may be hit or miss? Do you think the boat is running to wet? I trimmed mine up a hair from the way it came from the factory.

I sharpened and balanced an Octura X646 this afternoon and ran it just now. 53.9mph on 6s on the stock motor and ESC. I didn't have my 4s packs charged. Here are the temps after about 2/3rds of one set packs. Seems that things are getting a little hot. What are the max temps that I shouldn't exceed?

Capacitors on the ESC wires - 190
Motor connectors - 170
ESC - 135
Motor - 120
Batteries - 115 and 120

136619

My boat wasn't running wet at all. I actually did a few adjustment and those mph was the best iI got. When it was running wet i only got 41mph. When you ran your 646 did the boat torque roll at all or was it pretty straight? I'm thinking about getting a 6 48 but want to make sure the 646 wasn't too much first

[arrover]

My stock untouched prop ran 48.7 so maybe there's a wide variance in them. The x646 didn't torque roll to badly. I didn't really notice it anyway. I have run a 5014 on this boat and it did torque roll pretty badly but it still ran 55.8. I think you already switched your ESC right? I think I'm probably at the limit of the stock setup with the x646. The temps are concerning at least but I want to hear what the pros think.

[paulfromtulsa]

My stock untouched prop ran 48.7 so maybe there's a wide variance in them. The x646 didn't torque roll to badly. I didn't really notice it anyway. I have run a 5014 on this boat and it did torque roll pretty badly but it still ran 55.8. I think you already switched your ESC right? I think I'm probably at the limit of the stock setup with the x646. The temps are concerning at least but I want to hear what the pros think.

Your motor and esc temps are not too high. Yes i have change the esc to a 180amp Seaking. The 5014 prop that you used is it 50mm with a 1.4 pitch? I'm not familiar with that prop. I'm thinking iI might ok with a 648.

[arrover]

The 5014 is a CNC prop that I tried just to see what they were all about. Yes, it does have a 1.4 pitch. I would like to see how far the stock ESC and motor can be pushed but I'm kind of itching to put in my 180a Seaking too...

[kfxguy]

Your motor and esc temps are not too high. Yes i have change the esc to a 180amp Seaking. The 5014 prop that you used is it 50mm with a 1.4 pitch? I'm not familiar with that prop. I'm thinking iI might ok with a 648.


I see your itching to try a 648. Well I can tell you I burned up a $490 lehner motor and a expensive Esc in my 34" mono running that prop. It pulled a lot of amps. I think I was Peaking 399 amps in some points of the data log. I'm not sure what it will do on this boat. It is a lighter boat but it has a six pole motor which changes things some. I know the stock setup lives just fine with a bit less prop but is close to being on the edge. I've only see a 2 or so mph increase from a 645 to a 648 anyway. There's better props out there that would pull less amps and likely go faster. M447 is one example. 1914 and 1915 abc are two more choices. I went 58 with a abc prop weekend before last. I know the 648 won't be as fast and will be harder on things. I'm not even sure why I keep that prop lol. I'm gonna try to get out to the lake a couple times this week and do some more testing. I really really need to change trim tabs. I think the stock ones are causing me fits because they won't hold their position if they get touched. I'm trying to keep this boat in as stock form as possible but I think that's one necessary accessory it really needs.

[paulfromtulsa]

I see your itching to try a 648. Well I can tell you I burned up a $490 lehner motor and a expensive Esc in my 34" mono running that prop. It pulled a lot of amps. I think I was Peaking 399 amps in some points of the data log. I'm not sure what it will do on this boat. It is a lighter boat but it has a six pole motor which changes things some. I know the stock setup lives just fine with a bit less prop but is close to being on the edge. I've only see a 2 or so mph increase from a 645 to a 648 anyway. There's better props out there that would pull less amps and likely go faster. M447 is one example. 1914 and 1915 abc are two more choices. I went 58 with a abc prop weekend before last. I know the 648 won't be as fast and will be harder on things. I'm not even sure why I keep that prop lol. I'm gonna try to get out to the lake a couple times this week and do some more testing. I really really need to change trim tabs. I think the stock ones are causing me fits because they won't hold their position if they get touched. I'm trying to keep this boat in as stock form as possible but I think that's one necessary accessory it really needs.

I'm really just itching to hit 60mph. I just want the best prop to get me there. So far the best performing prop has been the abc 1815. So i might just try one of those. I'm not sure what to do lol

[kfxguy]

I'm really just itching to hit 60mph. I just want the best prop to get me there. So far the best performing prop has been the abc 1815. So i might just try one of those. I'm not sure what to do lol

Do note that Shua has a different rudder and billet trim tabs on his boat. Not sure if it helps but I do know the rudder he's using is a very good one and having the speed master trim tabs are definitely a plus. But for sure the 1815 is a very good prop.

[arrover]

KFX, are the ABC props you run 10 or 17 degree rake angle?

[shua]

Do note that Shua has a different rudder and billet trim tabs on his boat. Not sure if it helps but I do know the rudder he's using is a very good one and having the speed master trim tabs are definitely a plus. But for sure the 1815 is a very good prop.
This is correct and I already upgraded to the Seaking 180 esc with an additional cap bank. I do not know If the props I'm trying would be safe for the stock speed controller. I would wager NOT.
http://images.tapatalk-cdn.com/15/09/08/f7e2b24f5c63e38ecf8fbf7e41a20168.jpg

[kfxguy]

This is correct and I already upgraded to the Seaking 180 esc with an additional cap bank. I do not know If the props I'm trying would be safe for the stock speed controller. I would wager NOT.
http://images.tapatalk-cdn.com/15/09/08/f7e2b24f5c63e38ecf8fbf7e41a20168.jpg



That's a sexy rear end. Lol

[kfxguy]

KFX, are the ABC props you run 10 or 17 degree rake angle?


1814 is a 10 degree and 1815 is a 17 degree. Abc is coming out with a 1814 (1.4 pitch vs 1.5 pitch) 17 degree rake version with the 45 blade area. Should be a good runner on this boat.

[arrover]

Thanks for the information!

[shua]

That's a sexy rear end. Lol
Thanks! I decided to name her as well.

http://images.tapatalk-cdn.com/15/09/08/58dca41dfba12b67d5b8048f72bebefa.jpg

[arrover]

I ran an ABC 1915-17-45 this morning. Still stock motor and ESC. Water was glassy and I don't have this prop quite as sharp as it probably should be. A little breeze and a sharper prop might get a little more but anyway..... 57.3mph on 6S and 36.1mph on 4S. This prop has a pretty good amount of slip on acceleration from a stop and in tighter or slow corners. Boat is still handling great though. Lots of fun. Here are some temps. I would run a 2-3 quick passes and then bring it in read temps. I did not run full packs so these temps could go higher.

ESC - 126
Motor - 105
Batts - 95 95
ESC caps - 170
Motor connectors - 120ish

136818 136819

[paulfromtulsa]

I ran an ABC 1915-17-45 this morning. Still stock motor and ESC. Water was glassy and I don't have this prop quite as sharp as it probably should be. A little breeze and a sharper prop might get a little more but anyway..... 57.3mph on 6S and 36.1mph on 4S. This prop has a pretty good amount of slip on acceleration from a stop and in tighter or slow corners. Boat is still handling great though. Lots of fun. Here are some temps. I would run a 2-3 quick passes and then bring it in read temps. I did not run full packs so these temps could go higher.

ESC - 126
Motor - 105
Batts - 95 95
ESC caps - 170
Motor connectors - 120ish

136818 136819

So out of all your props which one yields the highest mph? Im still trying to decide on which prop to buy

[arrover]

So far this is the fastest that I have run but I only have 6 or 8 props currently. I'm having fun trying different things. What's amazing to me is that the 4S speed with this prop was 21mph slower than 6S.

[kfxguy]

Thanks! I decided to name her as well.

http://images.tapatalk-cdn.com/15/09/08/58dca41dfba12b67d5b8048f72bebefa.jpg




Man that thing looks so good!

[kfxguy]

So far this is the fastest that I have run but I only have 6 or 8 props currently. I'm having fun trying different things. What's amazing to me is that the 4S speed with this prop was 21mph slower than 6S.


The reason is on 4s it doesn't have enough nuts to turn that prop efficiently.

[kfxguy]

Sorry guys, I can no longer hold out on keeping this thing bone stock. I feel that it really needs a good set of trim tabs so I'll be putting a set of speed master ones on probably tonight.

[arrover]

Sorry guys, I can no longer hold out on keeping this thing bone stock. I feel that it really needs a good set of trim tabs so I'll be putting a set of speed master ones on probably tonight.

No problem! We just need pictures that's all.

[Darin Jordan]

So far this is the fastest that I have run but I only have 6 or 8 props currently. I'm having fun trying different things. What's amazing to me is that the 4S speed with this prop was 21mph slower than 6S.


The reason is on 4s it doesn't have enough nuts to turn that prop efficiently.

That's not the reason...

The motor has the same "nuts" regardless, but you have lowered the RPM down considerably on 4S.

If we are being honest here, a 1650KV motor is really NOT a 6S motor. That's a 36,630RPM setup, which are RPMs generally reserved for Hydros and sometimes Sport Hydros.

Monos that are setup correctly run in the 25,000 to 30,000 RPM range. A 35,000RPM+ Mono is usually reserved for SAW or 2-Lap Time-Trial stuff...

SOOOO... INORDER for you to run a 36000RPM setup in a 36" boat, you have to prop DOWN to a prop that won't burn up the motor.

On 4S, you can get away with considerably more prop. You shouldn't expect the much smaller prop needed to safely run 6S to work well at all given 4S RPMs (24,420 or so @3.7V/cell).

However, if you know what you are doing, I see no reason why you can't get reasonably close to 6S speeds on 4S, if you know how to choose the right prop.

[arrover]

Thanks Darin. I wasn't upset or put off by the 4S performance. I like to run the same prop on 6s and 4s just to see the difference. This is only my second boat so I'm enjoying learning about how the prop/motor/esc/batteries work together.

[Darin Jordan]

Has anyone put a real data recorder on one of these setups to see what the LOADED RPM is?

I'd be curious to know. I think I may have that data at home somewhere (when I tested these, I put in an ICE200 so I could see what was really going on), but I did almost all my running with the stock prop, so I'd be curious as to what your data is saying.

[kfxguy]

That's not the reason...

The motor has the same "nuts" regardless, but you have lowered the RPM down considerably on 4S.

If we are being honest here, a 1650KV motor is really NOT a 6S motor. That's a 36,630RPM setup, which are RPMs generally reserved for Hydros and sometimes Sport Hydros.

Monos that are setup correctly run in the 25,000 to 30,000 RPM range. A 35,000RPM+ Mono is usually reserved for SAW or 2-Lap Time-Trial stuff...

SOOOO... INORDER for you to run a 36000RPM setup in a 36" boat, you have to prop DOWN to a prop that won't burn up the motor.

On 4S, you can get away with considerably more prop. You shouldn't expect the much smaller prop needed to safely run 6S to work well at all given 4S RPMs (24,420 or so @3.7V/cell).

However, if you know what you are doing, I see no reason why you can't get reasonably close to 6S speeds on 4S, if you know how to choose the right prop.

I'm going to apologize ahead of time for being blunt, but it is what it is. First off, not any one person knows everything, including you. Secondly, I'll stand by what I said and I have proof. How you say? Well with a 1915 on 4s it runs around 34-35 mph. Went 58 on 6s. Then on 4s with less prop it went 39. Same less prop it went 52. Maybe I don't know what I'm talking about either but it seems to me that with an aggressive prop on 4s the motor has a harder time turning it but use 6s and it has the power to turn it. Prop down on 4s and it goes faster but the same prop goes slower on 6s. I also learned this on my 91mph mono.

Sorry but 35-36k rpm is not "saw" rpm anymore. Maybe 10 or even 5 years ago when motors weren't built as well. But today's quality is much better. I've yet to have a boat motor failure due to high rpm. I'm really tired of people thinking this way. It gets old. No, it's gotten old. I suggest you get with the times. :)


Guys, 6s with 1650kv is perfectly fine ALL DAY LONG. don't be fooled.

[kfxguy]

Has anyone put a real data recorder on one of these setups to see what the LOADED RPM is?

I'd be curious to know. I think I may have that data at home somewhere (when I tested these, I put in an ICE200 so I could see what was really going on), but I did almost all my running with the stock prop, so I'd be curious as to what your data is saying.


I have a data logging mgm Esc in mine. Haven't pulled the logs yet. Pull them tonight. They won't be an accurate representation however. The boat was ran in some nasty seaweed water and only had a top speed of 44mph on 6s.

[Darin Jordan]

I suggest you get with the times. :).

Yeah... OK... I'll keep that in mind.


I think I should just stop testing/designing/developing and racing boats because I'm a little too behind the times. :olleyes:

Not sure how my 1500KV powered IM31 can outrun a 2030 powered Revolt... maybe I just imagined that.

Newsflash... We were running Neu Motors 10-Years ago.... They were MORE powerful and MORE robust back then, and the same RPM principles applied.

The ONLY reason you are getting away with it now is because the ESCs have gotten MORE robust, and will handle more abuse. The motors haven't really changed, and these RTR motors can't really be considered the prime example of "quality" motors. Better than previous RTR motors, but not a Lehner or Neu.

But, hey, what do I know.

Just because YOU can't do it, doesn't mean it isn't done.

[Darin Jordan]

I have a data logging mgm Esc in mine. Haven't pulled the logs yet. Pull them tonight. They won't be an accurate representation however. The boat was ran in some nasty seaweed water and only had a top speed of 44mph on 6s.


OK, well when you get some clean data, let us know.

I'll have a look at mine tonight.

I just want to see how the RPMs are under a given load.

[kfxguy]

Yeah... OK... I'll keep that in mind.


I think I should just stop testing/designing/developing and racing boats because I'm a little too behind the times. :olleyes:

Not sure how my 1500KV powered IM31 can outrun a 2030 powered Revolt... maybe I just imagined that.

Newsflash... We were running Neu Motors 10-Years ago.... They were MORE powerful and MORE robust back then, and the same RPM principles applied.

The ONLY reason you are getting away with it now is because the ESCs have gotten MORE robust, and will handle more abuse. The motors haven't really changed, and these RTR motors can't really be considered the prime example of "quality" motors. Better than previous RTR motors, but not a Lehner or Neu.

But, hey, what do I know.

Just because YOU can't do it, doesn't mean it isn't done.

Id be impressed if you can make this hull do 60 on 4s reliably with all stock components. It sounds to me that's what your saying you can do, so let's see it.

[Darin Jordan]

Id be impressed if you can make this hull do 60 on 4s reliably with all stock components. It sounds to me that's what your saying you can do, so let's see it.

I'll give it a try, but I need to see the RPMs under load first. I also want to see the amp draw of your setups at those speeds.


And I didn't exactly say that... I said "reasonably close". There are efficiency of the prop issues that come into play as well that RPMs do make up for. The solution isn't always just a "bigger prop" (whatever the heck that actually means).

[kfxguy]

Pulled data log. Glad I did. Was only getting about 83% throttle. Need to recalibrate I guess.

Max amps seen was 123a and it was more around 115 when levels off.

Just realized I had it set to 4 pole also. Not sure it that makes a difference in power or heat but I know it does in the data log. Just ran another after fixing the throttle and it's getting 100% now.


I changed the trim tabs tonight and since I had to remove the rudder to do it I went ahead and put a different rudder on it with a kick back feature. Last lake I ran it made me nervous that I was going to break the rudder off because it has no break away. So now I feel better about it. Kintec sells these rudders so it's nothing special. Same exact length as the sticker and the same width. I think the trim tabs are going to allow me to dial it in much easier. I'll report back after I run it.

[Tamelesstgr]

Excuse my ignorance, but how do you set the throttle position? Assuming you are using the standard surface radio that is included?

[montymike]

Pulled data log. Glad I did. Was only getting about 83% throttle. Need to recalibrate I guess.

Max amps seen was 123a and it was more around 115 when levels off.

Just realized I had it set to 4 pole also. Not sure it that makes a difference in power or heat but I know it does in the data log. Just ran another after fixing the throttle and it's getting 100% now.


I changed the trim tabs tonight and since I had to remove the rudder to do it I went ahead and put a different rudder on it with a kick back feature. Last lake I ran it made me nervous that I was going to break the rudder off because it has no break away. So now I feel better about it. Kintec sells these rudders so it's nothing special. Same exact length as the sticker and the same width. I think the trim tabs are going to allow me to dial it in much easier. I'll report back after I run it.

Hey, can I get part# for the mods,knowing you had to drill and refill holes.

[montymike]

He is not using the stock radio.

[shua]

These are the Speedmaster Billet trim tabs that I am using. I beleive that they are the same ones KFXGuy is using too.

http://www.offshoreelectrics.com/proddetail.php?prod=ros-spdt-502

And this is the rudder from Kinetic Racing
http://images.tapatalk-cdn.com/15/09/12/8dc4f6e1a0f2ea53ccc02eff4c774797.jpg

[montymike]

These are the Speedmaster Billet trim tabs that I am using. I beleive that they are the same ones KFXGuy is using too.

http://www.offshoreelectrics.com/proddetail.php?prod=ros-spdt-502

And this is the rudder from Kinetic Racing
http://images.tapatalk-cdn.com/15/09/12/8dc4f6e1a0f2ea53ccc02eff4c774797.jpg

What a boat trim tabs...

[shua]

Check the ose link.

http://images.tapatalk-cdn.com/15/09/12/560891149fcc6bb623681b29cb67025e.jpg

[montymike]

:thumbup1:Sweet thanks...

[zooma]

That rudder is the standard TFL Pursuit rudder. As much as I like the kick-back feature, I would rather have a shear bolt than the open slot. I can't seem to get the bolts tight enough to keep the rudder from tilting in rough water at full speed, especially if I get a flip and then keep going. Please post your results.

[shua]

So far I have had no issue with unnecessary kickback.

[Brushless55]

I ran an ABC 1915-17-45 this morning. Still stock motor and ESC. Water was glassy and I don't have this prop quite as sharp as it probably should be. A little breeze and a sharper prop might get a little more but anyway..... 57.3mph on 6S and 36.1mph on 4S. This prop has a pretty good amount of slip on acceleration from a stop and in tighter or slow corners. Boat is still handling great though. Lots of fun. Here are some temps. I would run a 2-3 quick passes and then bring it in read temps. I did not run full packs so these temps could go higher.

ESC - 126
Motor - 105
Batts - 95 95
ESC caps - 170
Motor connectors - 120ish

136818 136819

Love the speeds your getting with that prop, but looks like we could not use that for Q Mono racing
curious to see how temps would be for several laps

[hobby_man]

lets talk batteries for this boat. I am running 1 Gens Ace 6s 65-120c 5000 mah with 4 minute run time at full throttle.
As you people know boats are lipo battery killers as my stock boat is drawing 112 amps.

Gens ace and Pulse batteries have worked the best for me. Anyone running a Pulse 6s lipo in this boat.

[Brushless55]

lets talk batteries for this boat. I am running 1 Gens Ace 6s 65-120c 5000 mah with 4 minute run time at full throttle.
As you people know boats are lipo battery killers as my stock boat is drawing 112 amps.

Gens ace and Pulse batteries have worked the best for me. Anyone running a Pulse 6s lipo in this boat.


your average during the run would be about 55-60amps, and that is plenty good :thumbup1:
I run 65C pulse in my Planes and Helis but think for the money I could get better for cheaper

[paulfromtulsa]

I ran an ABC 1915-17-45 this morning. Still stock motor and ESC. Water was glassy and I don't have this prop quite as sharp as it probably should be. A little breeze and a sharper prop might get a little more but anyway..... 57.3mph on 6S and 36.1mph on 4S. This prop has a pretty good amount of slip on acceleration from a stop and in tighter or slow corners. Boat is still handling great though. Lots of fun. Here are some temps. I would run a 2-3 quick passes and then bring it in read temps. I did not run full packs so these temps could go higher.

ESC - 126
Motor - 105
Batts - 95 95
ESC caps - 170
Motor connectors - 120ish

136818 136819

What does the 45 mean in your prop? I know the 19 is 1.9" the 15 is 1.5pitch, the 17 is the rake but what is the 45? I think this is the prop that i am going to order just want to make sure i order the right one. Thanks

[kfxguy]

Hey, can I get part# for the mods,knowing you had to drill and refill holes.

Yea buddy. I used the billet speedmaster trims they sell here. And here's the rudder

http://www.offshoreelectrics.com/proddetail.php?prod=ose-80050

Trim tabs

http://www.offshoreelectrics.com/proddetail.php?prod=ros-spdt-502


I just put silicon over the holes on the hardware.

[kfxguy]

That rudder is the standard TFL Pursuit rudder. As much as I like the kick-back feature, I would rather have a shear bolt than the open slot. I can't seem to get the bolts tight enough to keep the rudder from tilting in rough water at full speed, especially if I get a flip and then keep going. Please post your results.

I've run 91mph with that rudder. Scuff the mounting surface where it clamps.

[montymike]

Yea buddy. I used the billet speedmaster trims they sell here. And here's the rudder

http://www.offshoreelectrics.com/proddetail.php?prod=ose-80050

Trim tabs

http://www.offshoreelectrics.com/proddetail.php?prod=ros-spdt-502


I just put silicon over the holes on the hardware.
Thanks one stop shopping

[kfxguy]

Thanks one stop shopping

Yes. I'm about to be working on Steve to start carrying some things that I have to get from kintec so I can just make my build orders from one place.

[montymike]

Like a kv meter..

[kfxguy]

Like a kv meter..

Mainly we need that adjustable motor mount

[montymike]

Adjusting battery trays guess we nee a New thread lol

[zooma]

I've run 91mph with that rudder. Scuff the mounting surface where it clamps.

Oh boy. I'll try that. Thanks.

[arrover]

What does the 45 mean in your prop? I know the 19 is 1.9" the 15 is 1.5pitch, the 17 is the rake but what is the 45? I think this is the prop that i am going to order just want to make sure i order the right one. Thanks

The 45 is the blade area ratio. Honestly I'm not sure what it means but I wanted to post the whole prop number so there was no confusion. I guess that didn't work.... Haha.

[kfxguy]

45 means it's severely detounged. 50 is not detounged as much as 45. There really isn't a lot of out the hole difference between the two. They both cavitate a lot on a mono. Not so much at all on a cat. I need to try a even bigger blade area and see how it does.




Something I noticed and wanted to point out.....I had a bit of vibration in my driveline. I thought it was the prop. Nope. So I noticed the nut part on the collet wasn't spinning true. I thought I was seeing stuff. Took it off and put it on my balancer. Way off. Like the hole where it's threaded was threaded probably.015-.020 off on one side so it was wobbling bad. Took one off a burnt up octura collet I had and sounds ten times smoother. Do note that I have not seen one collet or collet nut come balanced (except mbp) but this one was way out. So just wanted to point that out. I think it was just a defective one. Nothing serious but worth checking.


Got a couple sets of batteries charged. Going do some testing tomorrow. Run this thing and a new rigger I finished today. I won't be able to get any logs except the last run. For some reason this Esc doesn't show me anything but the last run. Next weekend we are going camping again at a different place and I should be able to bring the laptop with me and get some good logs.

[paulfromtulsa]

45 means it's severely detounged. 50 is not detounged as much as 45. There really isn't a lot of out the hole difference between the two. They both cavitate a lot on a mono. Not so much at all on a cat. I need to try a even bigger blade area and see how it does.




Something I noticed and wanted to point out.....I had a bit of vibration in my driveline. I thought it was the prop. Nope. So I noticed the nut part on the collet wasn't spinning true. I thought I was seeing stuff. Took it off and put it on my balancer. Way off. Like the hole where it's threaded was threaded probably.015-.020 off on one side so it was wobbling bad. Took one off a burnt up octura collet I had and sounds ten times smoother. Do note that I have not seen one collet or collet nut come balanced (except mbp) but this one was way out. So just wanted to point that out. I think it was just a defective one. Nothing serious but worth checking.


Got a couple sets of batteries charged. Going do some testing tomorrow. Run this thing and a new rigger I finished today. I won't be able to get any logs except the last run. For some reason this Esc doesn't show me anything but the last run. Next weekend we are going camping again at a different place and I should be able to bring the laptop with me and get some good logs.

What props are you going to run tomorrow?

[kfxguy]

What props are you going to run tomorrow?

The one my boat likes the best is a 1915 but I may try the 1914 again. Maybe a m447

[paulfromtulsa]

The one my boat likes the best is a 1915 but I may try the 1914 again. Maybe a m447

In one of your post on page 2 your 1915 was your slowest prop. It was your 1815 that was the fastest then your 1914. Am I'm right? Or did you post it wrong? I just want to clarify before iI order a prop thanks.

[kfxguy]

In one of your post on page 2 your 1915 was your slowest prop. It was your 1815 that was the fastest then your 1914. Am I'm right? Or did you post it wrong? I just want to clarify before iI order a prop thanks.


You are correct sir. My mistake. I got that mixed up with my other boat. Sorry

[arrover]

Today I ran an ABC 1817-17-45 prop. It's a pretty high pitched prop (by far the highest I've tried) and the results were interesting. 50.3mph on 6S and 34.4 on 4S (still stock ESC and motor). As you would expect, the temps were pretty high. I did three sets of 2-3 passes each and then recorded the temps below. I didn't think there was any point in running it any further. The speed wasn't good and the prop slip out of the hole is huge. On 4S it probably didn't stop slipping until 20-25mph. On 6S it just seemed like the motor didn't have the power to spin the prop at full rpm. The ESC handled the prop fine although I bet there would be a problem if I would have run it longer or harder. I think the motor connectors might be at the temperature limit.

ESC - 132
Motor - 111
Motor connectors - 195
Capacitors - 175
Batteries - 105 105

136915 136916

[kfxguy]

I ran mine today too. Water was rough and wind was blowing pretty hard. Was having a time making a clean full throttle pass. Think the highest I got was 53-54 with the 1914. Flipped it two or three times. Got tired of going get it. I'm really getting close to adding a little epoxy in the tip and some two part foam. It's just too light to run in rough water. It get bent out of shape really easy. My 34" mono would have loved the water today but it's a good bit heavier. I also noticed the higher I pulled the strut up (which wasn't much because it barely moves) it kept picking up speed. I'm going to fix that shortly. I'm pulling data logs as I type this.

[arrover]

I believe that my strut is just about as high as it can go but I almost always have calm water to run in. If I set my boat on a flat surface, and push the transom down so it's firmly on the flat surface, the bottom of the strut is 6-6.5mm above that surface. It appears to be totally level with 6-6.5mm measurements at both ends of the strut.

[Brushless55]

The one my boat likes the best is a 1915 but I may try the 1914 again. Maybe a m447

Travis, are you going to run your new packs ?

[kfxguy]

Travis, are you going to run your new packs ?

Yes but I was trying to get the boat back to where it was in the beginning first.

[Brushless55]

Yes but I was trying to get the boat back to where it was in the beginning first.

... :thumbup1:

[arrover]

Well tonight could have been better. I was testing a new ABC 1816 "turbo cut" prop and the GPS kept losing signal. A couple runs showed in the 49mph range and then on the third run I was a lot closer to the opposite shore than I meant to be and hit a floating tree that was about 20'x4". Canoed over to the upside down boat and I thought everything was ok until I noticed the crack on the transom. It's really not horrible considering I was probably doing 30-35 at the time. After that I still ran some 4S packs and it ran fine. Once I got home I noticed a ding in the new prop.... The rest of the hull only has some tiny tiny chips in the paint. So the prop sucked and I wrecked the boat. I'm a little mad at myself right now.

136977 136978

[rabosi]

Yeah, that should not be too bad to repair. One thing I noticed is that I can get about a 5 mph difference depending on batteries. Dinogy 3S 5000 65c in series was 48.3 mph. Revolectric 6S 3700 70c in parallel 52.4mph. Everything else stock. I love the boat though, especially at it's price point.

[montymike]

Well tonight could have been better. I was testing a new ABC 1816 "turbo cut" prop and the GPS kept losing signal. A couple runs showed in the 49mph range and then on the third run I was a lot closer to the opposite shore than I meant to be and hit a floating tree that was about 20'x4". Canoed over to the upside down boat and I thought everything was ok until I noticed the crack on the transom. It's really not horrible considering I was probably doing 30-35 at the time. After that I still ran some 4S packs and it ran fine. Once I got home I noticed a ding in the new prop.... The rest of the hull only has some tiny tiny chips in the paint. So the prop sucked and I wrecked the boat. I'm a little mad at myself right now.

136977 136978
Sorry about your boat man, l have cracked one of mine up before.

[arrover]

Thanks guys. I don't think it's to bad and the boat is runnable as is. It looks to be mostly just cracked paint and the epoxy holding the top deck to the hull. ProBoat built a fantastic package in the Voracity. I wonder why they didn't spec a flip up rudder? Do you think it is a cost issue or are there other downsides to a flip up rudder?

[montymike]

Same reason why they didn't put bigger speed controllers cost!

[arrover]

Tonight I tested a detounged and cupped Octura x646. I thought this might be a good prop but the diameter has been decreased to 42.75mm. It only ran 50.2mph on 6S and 32.9 on 4S. I didn't write down any temps because it didn't seem like the prop was taxing the system. So it had been a while since the boat had ran a higher number and after the crash yesterday I wanted to make sure everything was ok. I put on the ABC 1915-17-45 on just to check. It ran 59.2mph on the same batteries that already had several passes on them. I was amazed. Still stock ESC and motor. I think the water was just a touch rougher with a little more wind. It must have freed the boat up just a hair more.

137032 137033 137034

[paulfromtulsa]

Tonight I tested a detounged and cupped Octura x646. I thought this might be a good prop but the diameter has been decreased to 42.75mm. It only ran 50.2mph on 6S and 32.9 on 4S. I didn't write down any temps because it didn't seem like the prop was taxing the system. So it had been a while since the boat had ran a higher number and after the crash yesterday I wanted to make sure everything was ok. I put on the ABC 1915-17-45 on just to check. It ran 59.2mph on the same batteries that already had several passes on them. I was amazed. Still stock ESC and motor. I think the water was just a touch rougher with a little more wind. It must have freed the boat up just a hair more.

137032 137033 137034

Man i think with good water conditions you will be the first to hit 60mph with your 1915 prop. I am going to order a 1915 tomorrow

[arrover]

I saw last night that OSE has a upgraded HD flex cable listed for the Voracity for $35. So it's stronger than stock and cheaper than Horizon. My flex is working ok for now but I did spin it in the collet a few times before I learned that the cable tip needs to be cleaned and the collet should be pretty tight. Thought you guys might want to know.

[kfxguy]

I thought the factory cable looked pretty stout myself. But that's good to know. That will be much easier for the newbs.

[Vaportrails311]

Great thread guys keep it up. I just flipped mine a few days ago and taco'd the canopy broke one pin out of the front of the canopy and cracked up both sides guess its time for some carbon reinforcements :-( I'm stock configuration and getting mid fifties with 6s2p and with a magic massage and balance on the stock prop and balanced the coupler/cullet took quite a bit of material off to get it running smooth as butter without vibration. Love this boat it's a Blast to run!

[kfxguy]

Great thread guys keep it up. I just flipped mine a few days ago and taco'd the canopy broke one pin out of the front of the canopy and cracked up both sides guess its time for some carbon reinforcements :-( I'm stock configuration and getting mid fifties with 6s2p and with a magic massage and balance on the stock prop and balanced the coupler/cullet took quite a bit of material off to get it running smooth as butter without vibration. Love this boat it's a Blast to run!

I'm thinking it would be a good idea for me to reinforce my canopy also. Guess that's the next thing I'll be doing.

[arrover]

I decided to add a little more floatation just in case. 1" foam pipe insulation with 3/8 wall thickness fits great in the sides of the hull. It's just the right size to slide up beside the existing foam in the nose and fit in the gunwales. My left side extends back to the cooling water exit and the right side goes way back to the servo area. The insulation is so cheap ($1.25) that I thought it was worth it.

137196 137197 137198

[rabosi]

Pool noodles also fit snug in those spaces. I ran mine today with a couple props. 55mph with Octura X645 s/b. 55.7 mph with Octura M447 s/b. 6S packs for both run. 6S 3700 x2 for X645 and 6S 3200 x2 for M447. Stock prop got 52.4mph with 6S packs. Originally I ran Dinogy 3S 5000mah 65c in series. 48.7mph with those and they got hot and puffed slightly.

[paulfromtulsa]

i just hit 60.2mph with an abc 1915 prop! the boat ran awesome with no torque roll . the boat was gliding on the water. i am very happy with this prop.

[shua]

i just hit 60.2mph with an abc 1915 prop! the boat ran awesome with not torque roll .
Nice Paul! You are the first! I have had a 1915 on order for a while now. Can't wait to try one!

[kfxguy]

Mine has been steady losing speed. I wasn't sure why. Well I found out why over the weekend. With the esc I have the wires on the motor and esc are short so the wires any pretty much straight across to the esc. Evidently that wasn't a good idea unknowingly. The insulation on one of the wires rubbed through and started grounding on the can. The last couple runs I was getting some serious amp spikes and lots of heat. I'm sure I ruined my mgm esc in the process. The last time I went to run it, it shut down on me for a few seconds. Then I babied it in and looked it over. My son talked me into letting him take the motor apart (I have a new spare anyway and I think he just wanted to see how it was built...so did I hehehe). So after looking it over and analyzing the build quality which was very high quality looking, just like a castle or older neu except six poles, I saw where the wire cut through. At this point I just haven't had time to fix it.

[rabosi]

Nice Paul! Is that with the stock electrics?

[arrover]

i just hit 60.2mph with an abc 1915 prop! the boat ran awesome with no torque roll . the boat was gliding on the water. i am very happy with this prop.

Nice Paul! Glad you like that 1915. I lost my flex and a new ABC prop on Tuesday morning. OSO HD flex and a replacement prop should be here tomorrow.

[paulfromtulsa]

I raised the strut as high as i could and i got 61 mph then my flex cable broke. Luckily i didn't lose my prop. I Also have an upgraded ose cable on order. I am using the stock motor but have upgraded to the seaking 180 esc rabosi

[arrover]

I received the OSE HD Flex cable and replacement prop today. It's a nice piece. I like that its a little longer so it inserts further into the collet. It comes with a brass bullet nut but I chose to go with the OSE-8135 "OSE Locking Prop Nuts 10/32". They are tight on the flex threads (like they should be) but they work fine. I have read that bullet nuts don't help at all. If you guys have experienced good results, let me know.

Tonight I ran a Octura x452. It ran better than I expected. 59.4mph on 6S and 40.3 on 4S. Still stock motor and ESC. That's just barely the fastest 6S speed I've run but it's the first time I've had it over 40mph on 4S. The water was very flat so there might be a little bit more in this prop with little wind ripples. Very little prop slippage out of the hole since the X props have a big tongue.

Temps after 4 sets of up and back passes
Motor - 120
ESC - 114
Capacitor pack - 160
Motor Wires - 150
Batteries - 102, 104

137389 137390 137391

[Banzee]

I received the OSE HD Flex cable and replacement prop today. It's a nice piece. I like that its a little longer so it inserts further into the collet. It comes with a brass bullet nut but I chose to go with the OSE-8135 "OSE Locking Prop Nuts 10/32". They are tight on the flex threads (like they should be) but they work fine. I have read that bullet nuts don't help at all. If you guys have experienced good results, let me know.

Tonight I ran a Octura x452. It ran better than I expected. 59.4mph on 6S and 40.3 on 4S. Still stock motor and ESC. That's just barely the fastest 6S speed I've run but it's the first time I've had it over 40mph on 4S. The water was very flat so there might be a little bit more in this prop with little wind ripples. Very little prop slippage out of the hole since the X props have a big tongue.

Temps after 4 sets of up and back passes
Motor - 120
ESC - 114
Capacitor pack - 160
Motor Wires - 150
Batteries - 102, 104

137389 137390 137391

How about the torque roll with that large prop ?

[arrover]

It didn't seem that bad actually.

[rabosi]

I raised the strut as high as i could and i got 61 mph then my flex cable broke. Luckily i didn't lose my prop. I Also have an upgraded ose cable on order. I am using the stock motor but have upgraded to the seaking 180 esc rabosi
Cool. Seems like the OSE flex might be a required upgrade.

[arrover]

I ran a ABC 1916-10-50 this morning. The water was flat so the speeds might be a little low because of that but still, not very fast. Stock motor and ESC. 49.7mph on 6S and 34.4mph on 4S. Lots of prop slip.

Temps after 8 or so passes:
Motor - 105
ESC - 121
Capacitors - 165
Motor wires - 170
Batteries - 99 95

137420 137421

[kfxguy]

I ran a ABC 1916-10-50 this morning. The water was flat so the speeds might be a little low because of that but still, not very fast. Stock motor and ESC. 49.7mph on 6S and 34.4mph on 4S. Lots of prop slip.

Temps after 8 or so passes:
Motor - 105
ESC - 121
Capacitors - 165
Motor wires - 170
Batteries - 99 95

137420 137421

A 1916 is not a good choice for this boat. I've noticed that the higher The pitched the abc prop is the faster it wants to go before it hooks up. The 1915 is a much better choice at this speed and rpm. Ideal? Not really but still a fast prop. I did talk mr Jim into making a 1914-17-45 which is going to be a better choice. The should be done next week. There's also a 3 blade coming that's very similar to the octura 447/3 but it's going to be faster and more efficient. I'll keep you guys updated. I'll likely get samples to try.

[arrover]

My testing agrees with what you say. The 1915 ran 59.2 on my boat and 60.2 on Pauls boat.

[kfxguy]

My testing agrees with what you say. The 1915 ran 59.2 on my boat and 60.2 on Pauls boat.

When the new 1914 comes out it should be faster because it will unload the motor more. That's my prediction based on a depitched 1915 my buddy just ran.

[montymike]

:popcorn2::thumbup:

[Brushless55]

A 1916 is not a good choice for this boat. I've noticed that the higher The pitched the abc prop is the faster it wants to go before it hooks up. The 1915 is a much better choice at this speed and rpm. Ideal? Not really but still a fast prop. I did talk mr Jim into making a 1914-17-45 which is going to be a better choice. The should be done next week. There's also a 3 blade coming that's very similar to the octura 447/3 but it's going to be faster and more efficient. I'll keep you guys updated. I'll likely get samples to try.

I'm very interested in that prop ..

[paulfromtulsa]

I got the upgraded ose flex cable today. The cable looks to be stronger than the stock one and is made nicely

[4343]

what is the stalk voracity prop in mm please!

[montymike]

Same as a octura x 645 so diameter 45 mm 1.6 pitch

[arrover]

This morning I tried a ABC 2014-10-50. The water was a little rougher than what is probably ideal for SAW passes. The wind was gusty. Stock motor and ESC. 52.7mph on 6S and 38.8 on 4S. I think there may have been 1-2 more mph to be had on 6S if the water would have been better but the prop wasn't that great. This is the largest diameter prop I've run and the first one that actually torque rolled the boat onto it's side while it was running. Between that and the chop, it wasn't ideal for top speed. It also take a while for the prop to hook up on acceleration.

After I saw that the 2014 wasn't going to run well I switched back to the Octura x452. I'm liking this prop. I didn't improve on it's 59.4 6S speed but it did run 42.2 on 4S today (on packs that had already been run with the ABC2014). Since the x452 is stock and has a full tongue, it accelerates great and is very fast. Sometime I want to run it harder for a full battery run to see how it would work for general bashing.

137636 137637 137638

[hobby_man]

137648
Stock boat, I was at 44mph with a Gens ace 5000 6s 65-130c just fueled up with a new pulse

[arrover]

It's am amazing what different batteries will do.

This morning I ran a Octura X455. Stock motor and ESC. Water was good. 59.4mph on 6S and 41.4 on 4S. Like the last prop, this one torque rolled the boat to one side. I noticed that it was rolling to the side my GPS was on so I swapped it to the other side and that seemed to help level the boat out on the passes. Still a fast prop but almost identical top speeds as the x452 and the handling wasn't as good because of the torque roll.

After I did the 6S and 4S runs, I swapped to a third set of batteries with only a 40c rating just to see what I could get out of them. The boat wouldn't do a full pass without going into ESC protection. The water had calmed down to almost glass so it might have just been drawing to many amps and hit the over-amp protection that Rafael has talked about. I swapped back to my main 6S packs and it did the same thing. It's possible that those packs were close to the low voltage cut off. Just a little strange....

137649 137650

[kfxguy]

Have you tried a 1915 or 1815? Those seem to be the fastest and most efficient props. I don't thing the motor has enough for a 2014. That's a pretty stout prop. Even a buddy of mine told me his 1577kv 1521 Neu on 6s was struggling to turn that prop. Evidently it's more aggressive than I initially thought. The 1914 and 1915 and 1815 do well.

[arrover]

Yes the 1915 ran 59.2 on my boat. I have not tried a 1815. The Octura x452 and x455 both ran 59.4 but I wouldn't recommend the x455 because of the torque roll. I believe that this boat (at least stock) likes large diameter, low pitched props. It seems like the limit on diameter might be somewhere around 2" before the boat starts laying over on its side. So far, these are the props that I've tested on my Voracity:

Stock Proboat prop
Octura x642
Octura x645
Octura m645
ABC 1817-17-45
Octura x646
Octura x646 detounged and cupped
ABC 1915-17-45
CNC 5014
ABC 1816-10-50 "turbo cut"
ABC 1916-10-50
ABC 2014-10-50
Octura x452
Octura x455

[paulfromtulsa]

Yes the 1915 ran 59.2 on my boat. I have not tried a 1815. The Octura x452 and x455 both ran 59.4 but I wouldn't recommend the x455 because of the torque roll. I believe that this boat (at least stock) likes large diameter, low pitched props. It seems like the limit on diameter might be somewhere around 2" before the boat starts laying over on its side. So far, these are the props that I've tested on my Voracity:

Stock Proboat prop
Octura x642
Octura x645
Octura m645
ABC 1817-17-45
Octura x646
Octura x646 detounged and cupped
ABC 1915-17-45
CNC 5014
ABC 1816-10-50 "turbo cut"
ABC 1916-10-50
ABC 2014-10-50
Octura x452
Octura x455

Wow you have a lot of props! When you ran the x455 did you go through a whole battery pack? How were your temps? I didn't think the stock 120 esc could turn that big of a prop without overheating. I am wanting to run that size prop in my Outrigger but wasnt sure if the esc would work with it. Any info would be great thanks

[arrover]

Hey Paul. No I did not run full packs through the boat with the x455. After I found that it wasn't as fast as the x452 and had some torque roll, I didn't run it much longer. The ESC got up to 125 degrees, capacitor pack on the ESC wires was 175, motor connectors were 145, motor 98. These temps could probably have gone higher but that's where I stopped figuring there just wasn't any reason to go further. Also, at least in the Voracity, the x455 seems like it is on the verge of pulling to many amps and putting the ESC into over-amp protection.

[arrover]

Reached my goal of over 60 on the stock ESC and motor! Actually stock everything except 5.5mm bullets for battery connections and OSE heavy duty flex (because I lost my stock flex). I ran the Octura x452 again to see how hot things would get and it ran 60.7mph on 6S. The water was a little bit rougher than normal and it was running pretty loose into the wind. I kept running it through one set of batteries, bringing it in every 4-6 passes to check temps, and then right back in the water. It was not race pace. More like sport running. Temps got pretty hot and one battery puffed slightly. My low voltage cut off is set as high as the stock ESC will allow and I did run it down to the LVC. I really like this prop. So fast and great acceleration. The high temps that I saw were:

Motor - 99
ESC - 115 (around 130 on the caps mounted to the ESC)
Capacitor pack on the ESC wires - 188
Motor bullet connectors - 170
Batteries - 118, 105

137686

[arrover]

I think you guys might like this. New top speed for me:


https://www.youtube.com/watch?v=TObyqTwgArg

[kfxguy]

I think you guys might like this. New top speed for me:


https://www.youtube.com/watch?v=TObyqTwgArg



Good job! Your the fastest so far!

[montymike]

Wow: nice job...

[paulfromtulsa]

Nice job arrover! My 61mph record only lasted a week lol. I wonder what it will take to get this boat in the 70's

[arrover]

Thanks guys!

[Rafael_Lopez]

Wow, just realized you ran a x452. That's the large prop that comes with the Zelos 48!:scared:

Great job, and I'm glad to see that the electronics are holding up through what you guys are putting it through. I think the largest prop I've put on it is a x448 and got like 56 or 57, cant remember.

[Brushless55]

I think you guys might like this. New top speed for me:


https://www.youtube.com/watch?v=TObyqTwgArg

Very cool man !
you cold back cut that prop to help bring the temps down and still keep the good speeds

[arrover]

Wow, just realized you ran a x452. That's the large prop that comes with the Zelos 48!:scared:

Haha! I saw that the other day and thought it was funny. Makes me wonder what could be done with the Zelos! Thanks again for a great boat Rafael.



Very cool man !
you cold back cut that prop to help bring the temps down and still keep the good speeds

Thanks! I was thinking that taking some tongue off of the x452 might get the speeds up a little more. I hadn't though of a back cut. I haven't tried cutting props yet. It seems like it might be a tough job.

[montymike]

X450 maybe..

[Rafael_Lopez]

Haha! I saw that the other day and thought it was funny. Makes me wonder what could be done with the Zelos! Thanks again for a great boat Rafael.


Seriously, I should be thanking you. It's one thing for me to say that we have progressed in the quality of our electronics, which is usually met with a "yeah right, you're just blowing PR smoke in our face cause it's your product. You have to say that". It's definitely more meaningful when people see a customer push the electronics beyond their "rated" limit and realize the quality and durability of the electronics. But most importantly, you seem to be having a very fun time with the product, which is what makes my job fulfilling and keeps me from getting fired.:tongue:
:thumbup:

[arrover]

Seriously, I should be thanking you. It's one thing for me to say that we have progressed in the quality of our electronics, which is usually met with a "yeah right, you're just blowing PR smoke in our face cause it's your product. You have to say that". It's definitely more meaningful when people see a customer push the electronics beyond their "rated" limit and realize the quality and durability of the electronics. But most importantly, you seem to be having a very fun time with the product, which is what makes my job fulfilling and keeps me from getting fired.:tongue:
:thumbup:

I am for sure having a ton of fun testing out your design. And speaking of testing stuff... The mail lady just dropped this off.

137796 137797

[kfxguy]

Better reinforce the hatch! I did mine already and really reinforced the hatch bolt and pin areas

[arrover]

KFX, could you post some pictures and tell us how you reinforced yours?

[Rafael_Lopez]

I don't know what he did exactly, but I would assume he either added more fiberglass or carbon/kevlar to the underside; maybe all inside the hull.

When I've added kevlar in the past, I liked to use thin CA glue. Basically pour it all inside the area to be covered, use a brush to spread it and then lay in the reinforcement material in and spread with an old credit card. Dried rock hard. CA will irritate your eyes though. We like to think that CA will cure quickly, and it does, unless you use it in large quantities, like I've explained.

My personal boats now, if they need reinforcement I like using fiber cloth with CA. I've never been a fan of epoxy or resin.

[kfxguy]

KFX, could you post some pictures and tell us how you reinforced yours?


Gladly. Take some pics when I get home this evening. I used carbon fiber and west systems epoxy. I haven't done the hull yet as I'm trying to keep it mostly stock. I did develop some gel coat cracks in the hatch and bottom of the hull from flipping it at high speed in rough water too many times. I didn't do the whole hatch yet but I'm going to.

[montymike]

I am for sure having a ton of fun testing out your design. And speaking of testing stuff... The mail lady just dropped this off.

137796 137797

Nice ,might want to brace the back of motor ...

[arrover]

Monty are you saying brace the motor more than the rear mount that is already on the Voracity stock?

This evening I set the boat up with the new Leopard 4092 1730kv and SeaKing 180a ESC. The 68mm water jacket is the biggest that will fit between two motor mounts and it uses every bit of that space. I was in a rush to run the boat so I only made a few passes. I was getting some chine walking with the x452 and 1915 props. I'm not sure if its because of the changes in weight distribution or something else. The ESC is mounted farther to the side of the boat, the batteries are slightly forward from stock because they now hit the motor, and the motor itself is a hair longer of course. Anyway I was backing out of the throttle a littler early but got mid 59mph passes with both props. The x452 ran 46.4mph on 4s. That's about 4 mph faster than the stock setup with same prop. My cables may be a bit on the long side. I checked temps a few times and things seemed hotter than I expected.... I'll get it figured out.

The 1730kv is a 3D wind so I set the timing at 3.75 degrees. I read that D winds should be 5 degrees or less. The other close settings are 0 and 7.5 degrees. What do you guys think of that timing setting?

137801 137802

[kfxguy]

I'd try the timing at 0. Wires a little long will Create more heat usually. Add a small cap bank if you haven't. That will help keep things happy.

[paulfromtulsa]

Arrover how are the motor temps on 6s with the 1730kv? On leopard site it says maximum voltage for that motor is 20v. Just curious if you pushing that motor too hard on 6s

[kfxguy]

Arrover how are the motor temps on 6s with the 1730kv? On leopard site it says maximum voltage for that motor is 20v. Just curious if you pushing that motor too hard on 6s


He may. It's almost 40k rpm. I suspect it may hold up if he's not at full throttle the whole time and always running it like that. The issue I've found with long motors and high rpm is the rotor shaft flexes because of length. I had one setup with a neu 1521 (even shorter motor) I was tuning serious rpm and you could see where the rotor was contacting the stator. I kid you not. This was a 50k rpm setup that I ran a lot. I didn't have a failure because I caught it beforehand. I now run 8mm shafts in everything that I can if it's fairly long. Not trying to scare you buddy, just want you to be aware. I think you'll be fine on 6s for a while but I'd take the rotor out after a couple runs and see how it's looks. You'll notice if it's contacting. If it is, pm me and I'll tell you what motor to get next that is cheap and will make that boat fly.

[kfxguy]

Btw, I was in the shop last night and totally forgot to take pics of the hatch. My son is out of school today, I'll get him to send me some.

[arrover]

Thanks for the info on the hatch strengthening. I should have said that last night.

I did see the 20v rating on this motor before I bought it but decided to try it anyway. We'll see what happens. I'll be sure to keep you guys updated. I haven't run it enough to be able to give you any good data but I will as soon as I have time. I will probably reduce the timing to 0 and try that. Thanks!

[kfxguy]

Thanks for the info on the hatch strengthening. I should have said that last night.

I did see the 20v rating on this motor before I bought it but decided to try it anyway. We'll see what happens. I'll be sure to keep you guys updated. I haven't run it enough to be able to give you any good data but I will as soon as I have time. I will probably reduce the timing to 0 and try that. Thanks!


Here's what I do and I've had no issues doing this:

Sf escs with auto timing feature, d or y wind I set to auto. It's faster that way. (Speed wise) and motor runs cooler
Other esc's: d wind I set to 0 usually and no more than 2. Y winds in run 7-15 degrees. If your over on your timing, the motor and esc may run hot or hotter than normal. I would not continue running it this way. That motor should not get hot or even very warm pushing this boat.

[kfxguy]

This is what I did at the pins and bolt. I also added two layers of black fiberglass not shown


http://i218.photobucket.com/albums/cc243/ltzguy/AE665583-060C-48E9-94D6-A71C32E4C10B.jpg (http://s218.photobucket.com/user/ltzguy/media/AE665583-060C-48E9-94D6-A71C32E4C10B.jpg.html)


http://i218.photobucket.com/albums/cc243/ltzguy/79260747-4FB2-4C51-9DE6-7A2B90036130.jpg (http://s218.photobucket.com/user/ltzguy/media/79260747-4FB2-4C51-9DE6-7A2B90036130.jpg.html)

[arrover]

Thanks for the timing info and the hatch pics!

I had an extremely short amount of time to run the boat tonight right before it was totally dark. Probably not the best to be running in such low light but I hadn't been able to use the boat in a few days and I wanted to try it. I set the timing to 0 last night. I tried a ABC 1817 prop first and got 54.6mph BUT the SeaKing 180 esc went into protection mode about 2/3rds down the very first pass. Since I had such little light left I put on a ABC 1916 and it ran 55.4mph and it also went into protection mode 2/3rds of the way through it's first pass. I have the ESC low voltage cutoff set at 3.4V (the same as the stock ESC). Could the cells be drawn down under that in one run and then recover between runs? My wires are still long and I think I may need a capacitor bank. Are there any cap banks that are "plug and play"? I've still got a lot of testing to do but the strange thing is that I had less problems with the stock ESC. No temp readings because there wasn't time for things to get hot. I almost didn't post this but I figured someone might need the info if they are thinking of buying a new motor/esc.

[paulfromtulsa]

Thanks for the timing info and the hatch pics!

I had an extremely short amount of time to run the boat tonight right before it was totally dark. Probably not the best to be running in such low light but I hadn't been able to use the boat in a few days and I wanted to try it. I set the timing to 0 last night. I tried a ABC 1817 prop first and got 54.6mph BUT the SeaKing 180 esc went into protection mode about 2/3rds down the very first pass. Since I had such little light left I put on a ABC 1916 and it ran 55.4mph and it also went into protection mode 2/3rds of the way through it's first pass. I have the ESC low voltage cutoff set at 3.4V (the same as the stock ESC). Could the cells be drawn down under that in one run and then recover between runs? My wires are still long and I think I may need a capacitor bank. Are there any cap banks that are "plug and play"? I've still got a lot of testing to do but the strange thing is that I had less problems with the stock ESC. No temp readings because there wasn't time for things to get hot. I almost didn't post this but I figured someone might need the info if they are thinking of buying a new motor/esc.

Were your batteries fully charged when it went into lvc? That motor can pull a lot of volts while in full throttle . When i had that combo in mySpartan it hit lvc very early. When i was monitoring the voltage it would pull the voltage from 3.8v per cell to 3.4 under full acceleration. I finally had set the lvc to 3.0 to get more run time. When the boat hit lvc the actually voltage of the batteries were around 3.3v. Hope this helps

[kfxguy]

I'm down for the count. I reinforced my hatch. I guess it was so much stiffer that it broke the hull. It broke the pin holes in the front and then ripped a big chunk out the back. I was just about to order a motor for it. Not sure what I'm going to do at this point. It's way too much work to fix and I can't afford another hull. Ultimately my fault, had I taped it down it likely wouldn't have done that. That's what I get for being lazy. Was only going 36-38mph and I was in some rough water. I guess it was the perfect hit. Bummer.

[arrover]

Dang that is a bummer. Really sorry to hear that.

Thanks for the info Paul. Yes the batteries should have been fully charged but maybe I screwed up my charging sequence and didn't actually charge them. I doubt it but I'm going to retry when I'm not so pressed for time. If it happens again I'll probably lower the LVC and test it.

[paulfromtulsa]

Dang that is a bummer. Really sorry to hear that.

Thanks for the info Paul. Yes the batteries should have been fully charged but maybe I screwed up my charging sequence and didn't actually charge them. I doubt it but I'm going to retry when I'm not so pressed for time. If it happens again I'll probably lower the LVC and test it.

If you batteries were fully charged there's no way it would of hit lvc. I would check your voltage next time. If your lvc is set to 3.5 it wouldn't be a surprise if the actual voltage of your batteries were around 3.8 because of the voltage drop under a load