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Unread 29-10-2011, 19:34
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Re: High Tensile Sprocket Bolts

Spacing off the sprocket will increase the likelihood of breaking bolts. We've never sheared 3 bolt patterns of the same diameter in situations with higher loading, but the sprocket was aligned to the shaft and there was no gap between the items being fastened.

For teams that keep failing the full 6 bolt pattern, have you tried replacing 2-4 bolts with shear pins?

A while ago I noticed the holes in Am's sprockets are .206", which is a bit big for a #10. This slop (and not accounting for it by aligning the sprocket on the shaft) is further weakening the interface.