[Thad House]

Originally Posted by Chris is me

When writing my post I didn't realize that the grooves were E-clip grooves, which makes the smaller diameter of the shaft a greater issue, nor did I realize the failure occurred as a result of bending forces. My bad.



One thing to consider - do you need an e-clip to retain the bearing? On our set up, we just have the wheel itself physically constrain the bearing - there's no space between the edge of our wheel hub and the inner bearing race. Sure, a bearing could possibly wiggle loose during a wheel change, but that's not a hard fix anyway.

The design was using eclips this year. Next year it will use spacers. No torque will be going though grooves.