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  1. #1
    Giant Member -holiday76's Avatar
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    BB size for Bianchi steel frame with Campy 10 speed

    I'm converting a steel mid 80's bianchi to run a Campy 10sp drivetrain. I'm going to run a Chorus double crank and and cold set the rear spacing to fit the rear dropouts for a centaur 10 speed cog. It's currently set at 126mm spacing.
    Can someone tell me how to figure out what size bb I need? Or maybe someone can just tell me?

    It's a italian bb shell and I was going to pick up a 70x111 veloce cartridge unit, but I thought i'd ask first before I end up with a part I can't use..

    ALSo, if I later go with a compact crank can I use the same BB?
    Mmmm, bicycles.

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  2. #2
    Forum Admin lotek's Avatar
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    Record and Chorus use a smaller BB width (102mm) than the 111mm centaur or veloce bottom bracket.
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  3. #3
    Giant Member -holiday76's Avatar
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    ok, so this needs a 102mm? Just wanted to make sure because I'm not exactly sure how old it is, or if maybe the older ones still used 102

    Mmmm, bicycles.

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  4. #4
    Giant Member -holiday76's Avatar
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    the chorus BB is $92 where as the Veloce one is $37. Damn. If I do indeed need a 102 is there someone else that makes a 102, italian thread, for cheaper than $92?

    or better yet, is the chorus crank compatible with any of the older style square taper bb's? Can I use any old 102mm square taper bb?
    Mmmm, bicycles.

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  5. #5
    Forum Admin lotek's Avatar
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    I'm not sure about compatability between the chorus cranks and older square taper BBs.
    I'd ask that in the Mechanics forum.
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  6. #6
    Forum Admin lotek's Avatar
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    Total Cycling has the Chorus bottom bracket for $58.
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