Unexplained forward somersault during takeoff

Hi everyone,

I have a problem with taking off a quadcopter I built. When I give gas, just a little, the quadcopter flips forward. I have already tried to calibrate the ESC but it didn’t help. I attach the flightlog: 2023-12-29 14-35-07.bin - Google Drive

Can someone help me?

Thanks

that’s usually a sign that the motors are in the wrong order or the flight controller orientation is incorrect.

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Did you try to slow the throttle and see the blade if they are all turning the right direction? How about the prop are they fixed correctly?

That was the problem, and I solved it. Thank you!!!