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  1. #1
    Senior Member ricohman's Avatar
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    Early Campagnolo Chorus questions

    I finally got my early Campagnolo Chorus grouppo today (for my Marinoni) and I am going to swap out the entire Ofmega grouppo.
    The donor bike had an english BB and the Marinoni is Italian threaded. I do have the Campy BB spindle which is marked 68-SS. Can I use my Ofmega cups for the time being or should I just wait for the right BB?
    The Chorus crank arms are 9/16x20F. Is this just a standard square taper? If it is I would asssume I could use my entire Ofmega BB with the Campy crank arms.
    Or would this wallow out my Campagnolo cranks arms in time?
    Last edited by ricohman; 12-01-07 at 01:50 PM.

  2. #2
    # BF-STL-00020 marengo's Avatar
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    The Ofmega cups and Campagnolo spindle should work togather, but unfortunately not in this application; Italian bottom bracket shells are 70mm wide. The ofmega spindle will work if it's the right length, I belive that's 110.5mm.

  3. #3
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    the 9/16 X 20 F indicates the pedal threading. Ofmega used the same taper as Campagnolo so you can install the Chorus arms without fear of damage - I'm not completely sure of compatibility between various vintages/models of Ofmega to Campy insofar as chainline goes tho- I'm sure someone here can help out

  4. #4
    Senior Member ricohman's Avatar
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    Thanks for the info.
    The Ofmega and Campy are both 1988 vintage so maybe I will try and install the crank arms on the Ofmega BB until I find a Campy BB.
    I just don't want to ruin the tapered holes in the arms.

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