Join Date: Jan 2017
Location: Kerikeri, , New Zealand
Yeah, I've been exactly here, just recently. It's imperative you have slop in your plate centre hole, so that the sprocket can float around a bit. There's no way you will be able to keep it from coming undone otherwise. I made a plate like you have done, spaced it out (so the sprocket sits adjacent the groove in the countershaft, where it normally would) with a couple of washers and bolted and locktited with the 2 bolts through the sprocket. I then took an M8 bolt and washer, fashioned a boss just slightly thicker than the plate I made, and drilled the centre hole in the plate slightly larger than the boss. I find it a bit hard to describe, but what you need to end up with is 1. the plate firmly attached to the sprocket, 2. the M8 bolt firmly locked in to the countershaft (output shaft) and 3. still have the sprocket " floating" on the spline so that all forces, snatching etc is independent of your locking plate - this way there is no strain on it at all - it's just controlling sprocket "end float" if you will.
Barry, Auckland New Zealand