Bike Forums - Bottom bracket

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Craig Hamilton

03-12-13 03:00 PM

Bottom bracket

Hi, can anyone tell me the best way to measure what bottom bracket I need? I have an old Claud Butler with cottered crank and want to convert to cotter less.

Thanks

fietsbob

03-12-13 03:27 PM

It will be as a Set with what ever cotterless crank you choose.
go through a Bike Shop .. and then you dont have to ship your trial and error back and forth.

as a general rule the British thread BB type of 68 width is the factor to fit your Bike frame.

ThermionicScott

03-12-13 04:08 PM

The crank usually has a spec for BB length. Check www.velobase.com

Craig Hamilton

03-13-13 01:16 AM

Thanks for your help.

Craig

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