Thread: Bottom bracket replacement?
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Old 08-30-19, 11:40 AM
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JohnDThompson 
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Originally Posted by HillRider
I don't know if a 36T chainring would fit the old crank. If the bolt circle is the common 130mm it won't. I also wonder if the change from 39T to 36T is worth the expense. Why not get a "compact" (50/34) and get a usefully lower low gear?
Good point. Depending on what compact crank is used, the OP may "get lucky" and be able to retain the old bottom bracket, but it's not given.
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