I started with a Rotofly. I CA'd the inner races of the bearings (don't get any in the bearings), to the center-hub posts, never lost a bearing after that. The only other weak link I found was the seesaw head (cheap molded plastic), the bearings didn't always seat properly. Some slight force with a pair of needle nose pliers, snaps them in. Other than that, it was a good entry-level e-heli, for indoor flights (outdoor with ZERO wind only), much better than the AirHogs Havoc I had.

Shadow