Taming my brushless Mini V

[G1ST]

I know many here have "been there done that" but I recently got a brushless Mini V from the swap shop here, It has a 380 size 3100 kv motor, seaking 35 esc and 3s 1000mah batteries. I added a water pickup on the transom just left of the driveshaft to cool the esc. For now I am using the stock outdrive and prop. It also has 3/4"w X 1-1/2"l trim tabs.
When I run it I can't give it any throttle beyond about 1/2. Even at steady 1/2 throttle it has a ton of list to the right. If I crack the throttle at any speed it flips. (clockwise).
I'm gathering parts to go to .098 flex and strut and rudder system.
Any ideas to get me more driveability until I can make the conversion?
I've done a couple of searches but didn't find a magic bullet.
Thanks in advance for the help.
Greg

Sorry for the long post

[tim v]

try 2 cell

[martin]

Do you know what hull it is & what size is it, Is it sub surface drive & what props are you using. Martin.

[martin]

Just realized its a surface drive as you stated you added a water pick up to one side of the shaft. Martin.

[G1ST]

Sorry
It's a Proboat Mini V. About 14".


All I have right now is 3 cell batteries.

Greg

[TomM]

3100 kv is very high. Chances are that could be attributimg to your problems. With mine i have a 2700kv on 3 cell and even then it starts to get a little bit hairy as higher speeds. The .098 flex cable conversion should help because it will give you a greater selection of props to choose from.

[martin]

Sounds like the motor has been replaced with to powerfull motor, Arnt the original fitted with a 3000kv to run on 7.4v. Martin.

[TomM]

Originally it comes with a brushed motor. The stock esc can handle the 7.4v lipo, but the outdrive normally melts the u-joints when you hook up a 3s lipo.

[martin]

A 380 brushless motor on 3s is way to much on this size boat. Martin.

[G1ST]

I figured it was probably way too much motor.
Hopefully I'll get to order a 2 cell battery and some small props when payday rolls around.
Thanks fpr the input
Greg

[G1ST]

3100 kv is very high. Chances are that could be attributimg to your problems. With mine i have a 2700kv on 3 cell and even then it starts to get a little bit hairy as higher speeds. The .098 flex cable conversion should help because it will give you a greater selection of props to choose from.

Tom what prop are you running on yours?
Greg

[TomM]

I run a x430. Temps are very mild. Never has a problem at all, i could prop it up a little bit, but then I'd be risking torque rolling

[G1ST]

I probably should go with a X427 since I have 3100 kv to contend with.
I can always prop up.
I just want to get up into the correct rev range.
Greg

[TomM]

Anything under around 27,000 would be okay. Just watch temperatures and torque roll. Be gentle, its a small boat and requires finess to drive

[G1ST]

Yeah torque roll has been my nemesis with this boat.
It'll all fall in to place.
The fun is in the process.
thanks
Greg