Originally Posted by
Zerodefect
Are you running brushless?
Can't you just swap 2 of the power wires to the motor to make it run the other direction like any 3 phase motor? Or just program the ESC for backwards op?
And how could it possibly be the M11's fault?

I already tried swapping the wires but the motor wont turn. I think it wont work on a sensored brushless motor. probably on a sensorless motor
i dont think there is a problem with the transmitter because as stated by dameetz above, the reverse mode work on an EZrun esc. so its probably a compatibility issue with the esc's that im using.