Originally Posted by Salkin
I have an X20 4.5T motor. I have noticed that I can pull the shaft out approx. 1.5mm. I cannot push the shaft in.
It runs fine, though, no problem. Rotates fine, no strange sounds.
But is it OK to have this play in the shaft? Does it need to be shimmed?
Just can't understand how a slop/play can develop if it is shimmed properly from factory?
no it shouldnt have play,take it apart,i bet the rubber o-ring is missing,i had the same problem,my motor kept cutting out on sharp left turns,the rotor moved away from the hall sensors and the esc would go to blinky mode,it should have 2 plastic shims but different thickness and a rubber o-ring,the thicker shim goes onto the pinion shaft first then the rubber o-ring,the thin plastic shim goes on the hall sensor side,ive just had the same thing with my orca tx so used metal shims to fix that