The hole in not perfect in the center, so the propeller is unbalance.
I mount this on DJI motor that have a 8mm shaft, to do this I enlarge gradually the hole to move it as much as possible in the center.
This problem exist for CCW only, not for CW version.
Please HobbyKing correct this problem.
Certified Buyer Rated
Dec 24, 2013
They fly and sound great, but are way out of balance and break very easy. Yellow looks cool.