My Test Results

[Doby]

My tests.....

Stock Prop...no changes to any factory settings......35 Mph and running wet...temps in the 90's...handles well

Raised strut......38.7 Mph....temps in the 90's...handles well

X642...sharpend and cut.....42.8 Mhp....lifts the bow out of the water nicely.....temps in the 115 range ...handels nicely.....moved the turn fins up half way and still handled great...

Grim L45X68 ......44.8 Mph......temps in the 130's and chine walked quite a bit

M445.....sharpend and cut...46.5Mph....temps in the 130's, handles well....riding on the last 2 inches of the hull or so.....:w00t:

All results after about 2 minutes of run time (more or less)

Like the temps and speed combo of the X642...sweet running boat with that prop.....easily get 4 minutes run time with 30% left in my 30C Turnigy 5800 LiPos.

Epoxied some supports to the hull and motor mounts as I thought the hull flexed a bit to much..

Put a bit more epoxy around the stuffing tube/ transom area.....


Well done Mikey:banana:

[ron1950]

nice tests what kind of run times are u getting with the 445 and 642...if i get one i would need it to run off shore at 4 min minamum.....

[emac250r]

Wow nice results. Could you tell me is that with all the stock connectors, motor and esc. Just wondering if changing those would get temps down a bit, connectors that is.

Thanks,
Eric

[Doby]

Wow nice results. Could you tell me is that with all the stock connectors, motor and esc. Just wondering if changing those would get temps down a bit, connectors that is.

Thanks,
Eric


All connectors changed to 5.5mm.

[Doby]

nice tests what kind of run times are u getting with the 445 and 642...if i get one i would need it to run off shore at 4 min minamum.....

Quote me...."Like the temps and speed combo of the X642...sweet running boat with that prop.....easily get 4 minutes run time with 30% left in my 30C Turnigy 5800 LiPos."

I didn't use the M445 any more than for 2 runs to verify speeds and temps...didn't like the temp I was seeing. In cooler weather it might work well.

Remember...fastest doesn't always=finishing....

[stadiumyamaha]

Good to hear. I had just bolted on a 642 to run next time out.
Are you running strut neutral?
About to put a ul1 motor in it to see how much of change the extra kv makes.

[bdp1174]

Where were you running the batteries at in those runs?

[Doby]

Where were you running the batteries at in those runs?

All the way at the back of the trays, with a GPS in the front of the tray......

[Doby]

Good to hear. I had just bolted on a 642 to run next time out.
Are you running strut neutral?
About to put a ul1 motor in it to see how much of change the extra kv makes.

Strut was slightly angled upwards....not sure a UL-1 motor will be a good set up in this hull...there's a reason Mikey didn't go that way..

[sturco]

Nice info, how high did you raise the strut on the stcck 2nd run ?

[NissanGTR]

Maybe you could take a picture of the struts position for us?

[Doby]

Maybe you could take a picture of the struts position for us?

As requested...height = 1/4"

[NissanGTR]

Your the man! Thanks!

[Grimracer]

My tests.....

Stock Prop...no changes to any factory settings......35 Mph and running wet...temps in the 90's...handles well

Raised strut......38.7 Mph....temps in the 90's...handles well

X642...sharpend and cut.....42.8 Mhp....lifts the bow out of the water nicely.....temps in the 115 range ...handels nicely.....moved the turn fins up half way and still handled great...

Grim L45X68 ......44.8 Mph......temps in the 130's and chine walked quite a bit

M445.....sharpend and cut...46.5Mph....temps in the 130's, handles well....riding on the last 2 inches of the hull or so.....:w00t:

All results after about 2 minutes of run time (more or less)

Like the temps and speed combo of the X642...sweet running boat with that prop.....easily get 4 minutes run time with 30% left in my 30C Turnigy 5800 LiPos.

Epoxied some supports to the hull and motor mounts as I thought the hull flexed a bit to much..

Put a bit more epoxy around the stuffing tube/ transom area.....


Well done Mikey:banana:

Thanks man!.. good test info!

Grim

[RCnerd]

What would you guys say the ideal temperature should be on the Motor/ESC?

[Doby]

Cooler the better...I prefer under 130 on everything on hot days and warm waters.....remember, it all depends on what you are setting up the boat for.....if you aren`t racing, then why worry about a few extra Mph as the stresses on the electronics aren`t worth it...if you are racing and want to push things, expect to pay the price eventually.

[Grimracer]

Im with Doby..

An FE power system (motor and controller) does not need to "get to temp" to fit the parts.

Cooler is better.

Grim

[RCnerd]

I figured that cooler would be better. What temperature would you say is HOT! 180 or above?

[Doby]

140+....

[RCnerd]

140+....

Thanks Doby.

[Mike Caruso]

Thanks man!.. good test info!

Grim

Second that good testing. Results can be good like these or bad just write it down.....don't try and remember for later.
I screwed up many times thinking Oh I can just remember HA.

Mike Caruso

[bdp1174]

Ran mine for about 3 minutes and 30 sec pretty much full throttle most of that time on 2 5300 gens ace 2s lipos stock settings with batteries at back and gps in front of tray.Top speed 34.5 mph but after run removed tape and checked temps with temp gun and temps around 120 on motor and 110-115 on esc.Ouside temp was about 80 degrees.Is that temp too hot?Was running a little wet.
Ran my MC right after for about same time on another set of gens ace it has a shapened and balanced 42x55 prop and temps were about 105 to 110 on that one.
Blew through the lines on the revolt and it is fine no clogs or anything.Just wondering if temps are ok?
Also did the rudder mod too.Maybe because it ran so wet it made temps higher.Any help is appreciated.
Thanks

Brandon

[Doby]

Temps are fine.

[madness67203]

Doby.....I already ordered a Grim L45x68. Do you think a guy could tune the chine walk out of it with this prop?

[LiPo Power]

...

[Grimracer]

Im a guy and I did!.. :rockon2:I love that prop on this boat!

Grim

[Doby]

Doby.....I already ordered a Grim L45x68. Do you think a guy could tune the chine walk out of it with this prop?

Having not tried too because of the temps I was getting, don't know for sure if you can......but apparently Mikey says so, so it must be
do-able if you know something about props.

Mikey...what temps were you seeing with that prop?

[electric]

Ran mine for about 3 minutes and 30 sec pretty much full throttle most of that time on 2 5300 gens ace 2s lipos stock settings with batteries at back and gps in front of tray.Top speed 34.5 mph but after run removed tape and checked temps with temp gun and temps around 120 on motor and 110-115 on esc.Ouside temp was about 80 degrees.Is that temp too hot?Was running a little wet.
Ran my MC right after for about same time on another set of gens ace it has a shapened and balanced 42x55 prop and temps were about 105 to 110 on that one.
Blew through the lines on the revolt and it is fine no clogs or anything.Just wondering if temps are ok?
Also did the rudder mod too.Maybe because it ran so wet it made temps higher.Any help is appreciated.
Thanks

Brandon

Your motor temps are more than reasonable. I don't even worry about the motor unless I start to see something over 135 or so. I also would note that out of the box my hull runs wet "hull completely in the water" rather than the last 2 inches. When you are trying to get the highest gps speed then you want as little hull in the water as possible. When you are racing with other boats I want it running wet for stability which is the bigger concern rather than top gps speed.


I might also add those are two diffrent hulls. The mono hull takes more energy to push across the water than a cat hull. This results in more amps and thus heat. LOT's of variables in terms of prop, how much hull in the water etc. that also has a great effect on amps/heat.

[bdp1174]

Ok thank you very much for the info.I appreciate all the help you guys offer here.

[LiPo Power]

Doby
Could you post few pictures of your improvements inside of the boat?
Thanks
Robert

[rstarny]

Doby
Could you post few pictures of your improvements inside of the boat?
Thanks
Robert

Pics please

[flyingjunky]

I cant get above 37.8 even w/ L45x68 and compete drive replacement,collet,thrust bearing,flex shaft.bushing,ect.. adjusted strut and still cant hit about 40. I am running boat on 5000 40 c packs. Both 2 s and just one 4s. Anyone have any ideas.using a garmin gps so I know its accurate.

[NissanGTR]

I cant get above 37.8 even w/ L45x68 and compete drive replacement,collet,thrust bearing,flex shaft.bushing,ect.. adjusted strut and still cant hit about 40. I am running boat on 5000 40 c packs. Both 2 s and just one 4s. Anyone have any ideas.using a garmin gps so I know its accurate.

Did you adjust the turn fins so they are not touching the water when you are going straight?

[detox]

I wonder what the best battery combination would be? Two Grimracer 4200mah 2s packs or one 4s pack? Two Grimracer 5000mah 2s packs or one 4s pack? I am sure this hull will be more stable using the heavier 5000mah packs, but looser and faster with lighter 4200mah packs. I bet if you remove the battery tray and mount one 5000mah 4s pack lower in the center of hull would be just the ticket for good stabilty and fast speeds. Looser is faster so maybe one lighter weight Grimracer 4200mah 4s pack would be faster and stable (or on the ragged edge).

Cool Hull... i like the Red version or maybe the White version with factory decals removed. I will buy one of these (without raduio) when funds allow it.


...

[detox]

I cant get above 37.8 even w/ L45x68 and compete drive replacement,collet,thrust bearing,flex shaft.bushing,ect.. adjusted strut and still cant hit about 40. I am running boat on 5000 40 c packs. Both 2 s and just one 4s. Anyone have any ideas.using a garmin gps so I know its accurate.

Loose is fast, but not too loose or you will be upside down. Loosen the hull up by adjusting stinger more upward maybe and shifting battery weight rearward. Sharpen prop better. Read instructions carefully and hunt for that perfect fast balance.

[flyingjunky]

Did you adjust the turn fins so they are not touching the water when you are going straight?

I have made every adjustment but that one, prop is very sharp, moved cg back, ect. I will try that as i did not think it would make that big of a difference. Thanks for the advice.
Eric

[detox]

Water conditions are very important. Calm water with a slight wind ripple on surface is fast water.

[flyingjunky]

Loose is fast, but not too loose or you will be upside down. Loosen the hull up by adjusting stinger more upward maybe and shifting battery weight rearward. Sharpen prop better. Read instructions carefully and hunt for that perfect fast balance.

I have been running both . Just the one 4s. and then the two 2s. Both 5000mah 40c. garmin does not show difference in speed but the ride is alot looser. Now with the 5.5 bullets the packs are running cooler so i have been stacking the 2 s on top of each other. I like the balance better. I had tested the speeds when the water was pretty calm but not much ripples. Did not know tjhat would make a difference. Thanks

[bdp1174]

My hull is running very wet at stock settings even with batteries all the wat in the back of the trays.How can I get the nose up and get the hull riding on the back?

[gyrotron]

My hull is running very wet at stock settings even with batteries all the wat in the back of the trays.How can I get the nose up and get the hull riding on the back?

I found this well written review with a few good tips for starters:

http://www.rcgroups.com/forums/showthread.php?t=1688045

Today I re-lubed the motor shaft, double checked the prop nut, made the adjustments on the rudder, pulled the turn fins up almost to midpoint, angled them back slightly, and adjusted the right outboard trim tab down about 3 degrees to counteract propeller trust pulling to the right (depending on your battery weight and CG you may need about more or less degrees). Today's 3rd run was a total sucess; I will keep it this way. I am runnung one GForce 40C 4S 5000mAh lipo witha weight of 493g(17.39oz). I hope this helps.

Cheers

[RandomHero]

UL-1 motor helped a little but not quit there

[RandomHero]

I run trekpower 7.4 6200mah 50c side by side n the middle about 1/2 inch from the back