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What size bearing 4 shift drum mod


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Those of you who had turned there own shift drums, what size bearing did you end up using and how did you go about turning the drum when theres a hole in the end for some reason. Does it interefere with the bearing or does it need to be filled in with a weld than turned?

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McMaster Carr P/N 5972K243. Tapped right into my case with no machining needed. Lathe end of the shaft down to a .001" press fit for the ID of the bearing. Don't worry about the hole. You'll remove it. Be sure to take a .020" pass before you start cutting the bearing groove. That way the shaft is resting on the bearing and not won't drag on the bore when it's back in the case. 

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