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  1. #1
    Senior Member rousseau's Avatar
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    Bottom bracket for 1984 Bianchi Campione D'Italia

    I want to say first that I'm extremely grateful to everyone who has responded to other threads I've posted in this forum. This is an excellent resource!

    The issue: Now that the bottom cup on the 20-plus-year-old threaded headset on my 1984 Bianchi Campione D'Italia has become pitted and needs replacing I've decided I'd best prepare for a time when my bottom bracket may need to be updated. Instead of relying on the catalogues on the counter of my LBS, which seem mostly Campy-free, though, I figured I'd like to go the Ebay route.

    The question: I'm a clueless neophyte. How do I figure out what specifications are required for a bottom bracket on my bike? I know that I'm using a square taper one, because I ordered a crankset for it last year and that was indeed the right choice, but beyond that I know nothing. Italian or English? Size? Length? Etcetera? How do you learn all of this? Is there a standard for my particular year and model of Bianchi?
    The pleasure is momentary, the position ridiculous, and the expense damnable.

  2. #2
    Senior Member
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    Trek 520, Fuji Track, Vicini Road
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    Use calipers to measure the bottom bracket shell width. 68mm is English, 70mm Italian. Next, measure the bb spindle length. Crank arms must be removed to do this.

  3. #3
    iPwn. evan_phi's Avatar
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    2004 Norco Wolverine (Blue) set up with Semi-Slicks. Mid-1970's Raleigh, converted to single seed, (soon to be) all white.
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    sheldon brown's site has a lot of info about this stuff.

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