Quote Originally Posted by DanE80 View Post
I have the same problem and believe I may have a bad ESC(new). The video examples are identical to my situation.

Did you find a the problem? - regarding a bad ESC?

Thanks.
It has been very frustrating for me having a lot of twitching with my 750kv motors (new) using the DJI 30 amp Optos (new). When I replaced them with 40 amp optos, the motors worked great, but the sudden drop to the left side ( - and recovery) during testing within a minute of each flight became a new problem.

I spent another $150 to replace the DJI 30 amp optos, and now may have a bad 40 amp ESC (new), or possibly a bad motor.

The two videos in this thread are identical to my quadcopter's condition. If a new ESC fixed the problem in the videos, I would like to know.

Thanks.