I have a Flipsky 65161 motor paired with the Flipsky FSESC 75350 controller. The combination was working with no issues when I put it away. When I tried it recently, the motor will spin fine at low rpms but when I ramp up the rpms the motor shudders and stops. Any thoughts on how to troubleshoot if its the motor or controller that is going bad?
The motor shaft spins freely and has no play when I spin it by hand.
I noticed there was water in the case with the controller and some oxidation on the Bluetooth module which went bad which I had to replace.
If it is then you can start with checking all the connections, hopefully there’s a point where there is poor contact. Use some connector spray to remove oxidisation.
If you’ve got water in the box it is likely that it’s a problem with the esc, but you might get lucky
When I tested every combination, it was apparent that there is an issue with the yellow leg.
Any combination without Yellow so GB on motor leads 1-3 or 2-3 the motor turns smooth.
If I do a combination with yellow, YB or YG the motor spins but with vibration above part throttle.
If I hook all three legs up, the motor shakes violently and stops. My guess is the yellow leg is completely out of sync with the blue green legs.
So I guess my ESC is bad on the yellow leg.
Does anyone know how to check voltage on the legs coming out of the ESC. I put my multimeter on AC and try to check the blue green legs and nothing happens with the throlle depressed. If I connect the motor, it doesnt spin with the multimeter attached to blue and green. If I try to do touch the multimeter leads to the blue and green legs while the motor is spinning, I get a huge spark.
Sounds like there’s an issue with yellow phase esc mosfets. You have to open the esc to test them, but could be other issues with mosfet drivers etc and it seems your electronics knowledge is (so far) limited. It’s likely best to swap the esc.
Yes, I just have basic electronic skills. But I do understand the concepts and simple EE concepts. I contacted Flipsky to see what they offer to repair it. If it’s not practical then I’ll probably open it up and try to test the mosfets myself with the help of this forum.
