Question about Cycling
I think I know what you are asking, but you haven't given me much to go on. Here are the names of the parts going from pedal to pedal -- pedal, crank arm, bottom bracket arbor, crank arm, pedal. Are you asking about attaching the crank arm to the bottom bracket arbor? And if so, are you missing the tapered pin that older bikes used to make this attachment? If so, the crank arm has 3 holes in it - one for the pedal, one for the bottom bracket arbor, one for the tapered pin. And your bottom bracket arbor will not have a square end, but will have a round end with a flat spot about 3/8 inches square. If you are missing this pin, then take the bike to a bike shop. It's a very inexpensive part, but might be hard to find the right size- or might require a little modification to fit. good luck Al K
Posted on Oct 15, 2010
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Posted on Jan 02, 2017
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