u/sinesero

First of all - i do not recommend doing this!

After first attempt I discovered that I strongly need water cooling for ESC because it is too hot in an electric box. So I ordered another, water cooled, ESC from Flipsky, model 75200.

Main reason why it's possible for LiftFoils board is on picture of 12 pin molex mini fit - pin one is a standard PWM signal, pin two is GND for pwm. Pin nine is GND for 9v battery, pin 10 is +9v. Others don't in use.

Other connectors stay as is.

I rearranged everything inside an electric box, made new 3D printed plates for ESC and communication pcb. Changed original quick connectors on waterlines because the original has too small inner diameter (2.5 mm) that is not great for flow and cooling. Add additional esp32 c3 mini for Bluetooth communication with VESC.

VESC settings - standard initialization procedure. As input set ppm and uart, as control set current without brake. Number of poles is 16, ERPM for now limited to 15000, current limited to 100A for now.

Excuse me guys, I spent two whole days working on this project. Has no power for good text. New tests tomorrow I hope.

Hello, my name is Booch and my side work is to repair efoils, mostly Liftfoil. This one got water inside an electric box that damages ESC (motor driver) so bad that there was no reason to repair it. And because of sanctions we can't legally buy a new one. After some research with the oscilloscope I found a way to connect VESC ESC to the main board, save the original remote control with all fixtures, and the battery also works as usual. For now I've tested it only at the workshop, wish me luck with tests on water this weekend.