Cycling Equipment · Public discussion

centaur double cranck with chorus/record BB?

Started by serg · · Last activity · 4 posts · 556 views

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Cycling Equipment
Published
16 June 2004
Last activity
17 June 2004
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serg
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  1. so-why does the record/chorus double use a 102mm BB and the centaur double
    use a 111mm? can i use a chorus double BB on a centaur double crank?

    what about mixing triple cranks/BB? is there a way to reduce the q-factor on
    a centaur triple? thanks!

  2. Seems that Chorus and Record BBs are now asymmetrical, more
    spindle on the drive side, with correspondingly less offset
    due to crank arms.

    Centaur uses the other approach, symmetrical BB with offset
    arms. This leaves us with the
    AC-H BB, Specialites TA's symmetrical Axix 110mm & 113mm, and Phil Wood's
    Campy-compatibles. I'm going to run AC-H until it busts.

    This was covered very recently:

    http://tinyurl.com/3bz6y

    chad AT alumni DOT unh DOT edu

    Quoted message said:

    so-why does the record/chorus double use a 102mm BB and the centaur
    double use a 111mm? can i use a chorus double BB on a centaur double
    crank?

    what about mixing triple cranks/BB? is there a way to reduce the
    q-factor on a centaur triple? thanks!

  3. thanks chad! but what about using a 102mm symmetrical BB (record or chorus)
    with a centaur double?
    the campy site says to use the same 111mm symmetrical BB for the double or
    triple centaur where as it says to use the 102mm BB for double and a
    asymmetrical 111mm for a record/chorus triple.
    hmm...

    "Chad" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    Seems that Chorus and Record BBs are now asymmetrical, more
    spindle on the drive side, with correspondingly less offset
    due to crank arms.

    Centaur uses the other approach, symmetrical BB with offset
    arms. This leaves us with the
    AC-H BB, Specialites TA's symmetrical Axix 110mm & 113mm, and Phil Wood's
    Campy-compatibles. I'm going to run AC-H until it busts.

    This was covered very recently:

    http://tinyurl.com/3bz6y

    chad AT alumni DOT unh DOT edu

    Quoted message said:

    so-why does the record/chorus double use a 102mm BB and the centaur
    double use a 111mm? can i use a chorus double BB on a centaur double
    crank?

    what about mixing triple cranks/BB? is there a way to reduce the
    q-factor on a centaur triple? thanks!


  4. serg-<< so-why does the record/chorus double use a 102mm BB and the centaur
    double
    use a 111mm? can i use a chorus double BB on a centaur double crank? >><BR><BR>

    Designed that way. Cannot use a 102mm BB for a crank designed for the 111mm
    one, the small ring will hit the frame.

    Peter Chisholm
    Vecchio's Bicicletteria
    1833 Pearl St.
    Boulder, CO, 80302
    (303)440-3535
    http://www.vecchios.com
    "Ruote convenzionali costruite eccezionalmente bene"

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