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  1. #1
    Cars are evil mynameisnotdrew's Avatar
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    Rare Derailleur Type

    Howdy Folks,

    I just finished building myself a new bike from this generic aluminum cross frame, and it runs sweetly, except that I can't find a propper front derailleur for my needs. I started with a Deore LX on there, but took it off and now justkick the chain to shift.

    The problem: I got a 52-40-28 biopace chainring, but I need a TOP PULL derailleur with a 31.8 clamp.

    Does anybody know is such a thing exists? All of the shimano stuff that fits a 52 is bottom pull. Cyclocrossers usually don't have 52's, so they just use MTB stuff.

    Did SunTour ever make such a thing?

    OR: has anybody ever seen a cable guide which can switch a top pull to a bottom pull? With a 31.8 clamp?

    I'll use this info to know what to look for at LBS's and on ebay


    Thanks--

  2. #2
    Senior Member sydney's Avatar
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    Quote Originally Posted by mynameisnotdrew
    Howdy Folks,

    I just finished building myself a new bike from this generic aluminum cross frame, and it runs sweetly, except that I can't find a propper front derailleur for my needs. I started with a Deore LX on there, but took it off and now justkick the chain to shift.

    The problem: I got a 52-40-28 biopace chainring, but I need a TOP PULL derailleur with a 31.8 clamp.

    Does anybody know is such a thing exists? All of the shimano stuff that fits a 52 is bottom pull. Cyclocrossers usually don't have 52's, so they just use MTB stuff.

    Did SunTour ever make such a thing?

    OR: has anybody ever seen a cable guide which can switch a top pull to a bottom pull? With a 31.8 clamp?

    I'll use this info to know what to look for at LBS's and on ebay


    Thanks--
    A clever person can rig their own cable reverser with a pulley and some hubba bubba.

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