ESC Simonk; motor turn abnomal

Helllo why wen I use this ESC simonk30 the motor for my quadcopter turn at low speed, but when I chang the ESC the motor turn normal rotation!!

Thanks very much

Good day,
Simonk’s and Afro’s escs are not well supported in ardupilot

So supported for what???

firmware of simonk esc is not fully compatible with ardupilot that’s why your montor spin abnormal.

I use SimonK and Afro brand ESC just fine for 100’s of flights, with no problems on my quad’s on everything up to a 3510 motor, with no problems. Has the problem ESE(s)been calibrated?