AVR will not take off

[GymLeaderBrock]

Weak motors not spinning correctly

Hello. We are experiencing a problem in which the motors spin normally and on high speed (according to our control) when tested on QGround Control. However, when we try to test flight with the actual controller, two of the motors are very weak compared to the other ones. [AVR Drone Unable to Fly with Weak Motors] Here is a link to a video of our drone motors spinning with propellers on. Last week all four motors were spinning weak, but for some reason this week one of the motors is…

This seems to be a similar problem to what your having.