Cycling Equipment · Public discussion

Are there no top-pull front road derailleurs?

Started by Phil, Squid-in-Training · · Last activity · 5 posts · 531 views

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Cycling Equipment
Published
9 September 2004
Last activity
10 September 2004
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Phil, Squid-in-Training
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  1. A quick look through J&B shows that there aren't any differentiations
    between top and bottom pull. Do road bikes not have any top-pull cable
    routing? I can't remember a time I worked on one that had top-tube
    routing...

    Phil, Squid-in-Training

  2. Phil said:

    A quick look through J&B shows that there aren't any differentiations
    between top and bottom pull. Do road bikes not have any top-pull cable
    routing? I can't remember a time I worked on one that had top-tube
    routing...

    Phil, Squid-in-Training

    Bottom pull derailleurs make cable routing easier.
    Top pull derailleurs were developed to solve a mountain bike problem of dirt being thrown into the cable routing system below when road bike derailleurs were adapted to mountain bikes.
    The dirt isn’t enough of an issue on most road bikes to necessitate a more complicated fix.

  3. << Do road bikes not have any top-pull cable
    routing? I can't remember a time I worked on one that had top-tube
    routing... >><BR><BR>

    Road no, ceoss frames, yes. No top pull road front ders anymore tho. Sachs had
    one a while ago. The solution is a clampon 'e' clamp, with a roller onto the
    seattube.

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

  4. Quoted message said:

    Road no, ceoss frames, yes.

    Cross bikes utilize MTB chainring ratios, so they'd use readily available
    top-pull MTB front derailleurs, no?

    --
    Phil, Squid-in-Training

  5. Phil-<< Cross bikes utilize MTB chainring ratios, so they'd use readily
    available
    top-pull MTB front derailleurs, no? >><BR><BR>

    The cross frames we build 'normally' have a 48 or 50t big ring. MTB front ders
    are optimized for a 42t..We generally use a road Der with a roller.

    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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