pic: Modular Gearbox

[Jon Stratis]

Originally Posted by GeeTwo

I agree that you would not want retaining rings, even if machining were not an issue - they're a high-stress point.

Sure, it's a stress point... but is it really that big of a deal? We've used some AndyMark Toughbox Nano's in several applications (including drive train) without any issues at all, and they use retaining rings. In fact, we have one pair of Nano's that's made it through two seasons on two separate robots, with a season in between where it was used for practice. That experience would seem to indicate that using retaining rings may not actually be all that bad.