I think they are all going about it the wrong way; sleeving the BB shell down to take the small bearings from obsolete cranksets, rather than sleeving the axle up to fit the big BB30 style bearings.
@gbj_tester started
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I think they are all going about it the wrong way; sleeving the BB shell down to take the small bearings from obsolete cranksets, rather than sleeving the axle up to fit the big BB30 style bearings.