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  1. #1
    Senior Member
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    Chorus triple on symmetric BB?

    I just installed a new Phil Wood bottom bracket on my bike (110.5mm, Campy taper). In the process I noticed that the middle chainring of my Campagnolo Veloce triple crank is looking a little worn with what look like some chips in a couple of the teeth. I've been shopping around for replacement chainrings, and I can almost get a new crankset for what a replacement Campy chainring costs. I've run across some clearance deals on brand new square-taper Chorus triple cranksets that are in the same price range and I'm tempted.

    The only problem is that Chorus/Record cranks require an asymmetric bottom bracket that is, I think, 2mm longer on the drive side. Has anyone tried running a Chorus triple on a symmetric BB? What about if I adjusted the Phil BB to shift it 2mm to the drive side? Is it just a matter of chainline, or is there something special about the Chorus/Record triple BB that I'm not taking into account?

  2. #2
    Elitist Troglodyte DMF's Avatar
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    Provided the chainline is correct (strictly a function of the drive-side axle length), then the only effect of an a/symmetrical axle is location of the non-drive side crank arm: non-critical.

    Just be sure that if the non-drive side axle is shorter, then it's not too short. Otherwise no worries.
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

  3. #3
    Senior Member
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    If I worried about a couple of chipped teeth I'd have to look for false teeth for my head.
    Ride it and quit worrying.

    Al

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