the grub screws are just to small to get tight enough without rounding the hex’s. I put 4mm grub screws back in and it seems solid. After reading this thread i just checked my other motor and noticed that started slipping to. guess its going to get the same treatment soon.
I just ordered these motors… hope I don’t have the same problems.
I had the same problem motor replaced and problem is gone tho I’m facing a different problem now. Can is moving up and down slightly and it makes a clicking noise when running. When I accelerate clicking sound vanishes but still not comfortable with that Can moving up and down. And it only moves on the specific spot of the can. This makes me wonder if it is grub screw problem… any suggestions?
