Grabbed half an hour in the garage this pm and thought I would check out the gearbox sprocket and output shaft. The sprocket was decidedly sloppy with about 6 mm rock along the axis of the gearbox shaft, I was hopeful that the gearbox shaft would be OK as there was very little circumferential movement and I was not disappointed. Whist there is evidence of movement the gearbox splines are perfectly serviceable with no lifting of any case hardening or chunks missing.
The gearbox sprocket is an AFAM and I have never noticed this before when changing sprockets that this one whilst 14 mm thick only has splines that are 8.9 mm deep and what is worse is that they are located not on the toothed edge of the sprocket but on the spacer edge. This would have the advantage of putting them closer to the output bearing but under the sprocket there is c 5 mm unsupported. Are all Ducati gearbox sprockets like this or is it just AFAM ones?
If it is just AFAM ones I shall not be buying from them in future
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