Help with motor spin issue

[Elliott000]

Ive done the checks of solder joints amd tried different esc/motor. What happens is at startup of my wkm one of the five motors spins or stutters. If i help it before starting by giving it a spin then starting it seems to perform fine, it started out of the blue and motors are about 1 hr of flight old. Axi 2814/22
Changed props. It does it more with 14" with 12" only one time out of 8 starts

 

[andrewrob]

Ive done the checks of solder joints amd tried different esc/motor. What happens is at startup of my wkm one of the five motors spins or stutters. If i help it before starting by giving it a spin then starting it seems to perform fine, it started out of the blue and motors are about 1 hr of flight old. Axi 2814/22
Changed props. It does it more with 14" with 12" only one time out of 8 starts

We get this with ours too every now and again. Spin the rotors up and one doesn't turn. Switch them off then arm again and all 6 come on. Which motor number is it? I think ours is usually 1.

 

[Elliott000]

Mines motor 2, i tried different idle speeds and it didnt change anything. Hmm i just hope its not a sign of mid air failure