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Old 12-01-07, 01:42 PM   #1
ricohman
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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.
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Old 12-01-07, 04:39 PM   #2
marengo
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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.
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Old 12-01-07, 04:42 PM   #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
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Old 12-01-07, 06:16 PM   #4
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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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