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Chainset and BB Question

norrisnnorrisn Posts: 7
edited August 2016 in MTB workshop & tech

I have an old frame I am refurbishing and its shell size for BB is 73mm, now the chainset I have requires a BB to be 68 x 113.

Do I just get a 73mm x 113mm BB for the frame or because of the extra shell length do I remove the difference from the spindle length and go for a 73 x 108?

BBs are so confusing :(




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