hi i race a 1050 in a speedway sidecar and have broke 3 cranks one racing and 2 on dyno how do you stop it. fist one 10000rpm and on dyno 5000rpm and 3000rpm
I guess you've looked here? Look at the post a couple down. Something to do with the sprag clutch retaining bolt. Seems a bit of a simple fault for such a drastic result.
