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Results tagged with bottom-bracket
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user 23254
The part of your bike that contains the axis the cranks arms spin 'round. (The crank arms are where the pedals attach.)
3
votes
Bottom Bracket Compatability Question
Here's the Shimano datasheet. So we know it's a square taper, ISO-threaded BB. So a UN54/UN55 is the replacement part (take the UN55).
73 is the shell size: 73mm.
113 is the spindle length: 113mm.
- 388
3
votes
Accepted
Replacing crankset on early-'70s Motobecane 10-speed
From this photo we can see you have cotterless cranks, probably square tapered, which you'll be pleased to know are still a very common interface. Yours look like they're held in place with a 14mm nut …
- 388