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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?
    Do not mate different kinds of animals. Do not plant your field with two kinds of seed. Do not wear clothing woven of two kinds of material. (Leviticus 19:19)

  2. #2
    Senior Member
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    Sep 2005
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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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