Please help with this crank and BB question

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08-20-12 | 09:46 PM

look171

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Please help with this crank and BB question

Can anyone tell me if this crank will fit on my old LeMond Zurich. English BB. I know a BB30 will not fit there can an other BB fit in my BB with that crank? I have no idea what a BB30 is compare to GXP (I think that's what they are called?) https://losangeles.craigslist.org/sgv...200152099.html Thanks

Can someone explain the difference to me on these hollow external BBs. Are BB30s the standard or the norm? I am still running DA Octalink

Jeff

08-20-12 | 09:56 PM

FBinNY

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Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

You can fit any system, internal or external BB, as long as it references a 1.370x24tpi BB thread, with a 68mm BB width. If it says something to the effect that it fits a 68mm BSC shell, that's the same thing. Anything that doesn't reference a 1.370 thread is out.

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08-20-12 | 10:30 PM

Jeff Wills

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From: other Vancouver

BB30's are still fairly rare. The "installed base" of English-thread, threaded bottom bracket shells is huge, and I doubt that will change rapidly.

Other Jeff.

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