On 3/3/2012 2:21 PM, Ecnerwal wrote:
sometimes it's best to leave
the "weak link" weak, so it can protect all the other links, and buy a
few spares of it so you can get back running after you break it again.


That's a good principle, but replacement gears aren't necessarily easy
to acquire.
Better to have a sacificial key or taper pin I think. It could maybe be
incorporated into the new steel gears.

Someone used to joke about the $100 gear that stripped to protect the 20
cent key, and the wiring harness that burnt to protect the fuse.