FD on Flat Bar Road Bike

Discussion in 'Cycling Equipment' started by Dan Brussee, Aug 20, 2003.

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  1. Dan Brussee

    Dan Brussee Guest

    I need some advice. Ive been through what I have in the spare box and have not found a good fit. I
    need a front derailleur for a road frame that I have put a MTB 44T large crankset on. I am using
    flat bar Shimano Rapid Fire shifters (8sp by the way).

    My problem is the clearance between the seat tube and the rear tire is very small. Typical of a road
    bike. There is maybe 3/4" of clearance.

    I have tried a Deore with Top/Bottom pull design and it is WAY too deep behind the seat tube. A
    brand new LX top pull top swing is "just" able to clear the tire. It has maybe 1/4" clearance at
    full swing and I really should angle the derailleur just a hair more, but that would make it
    even closer.

    Would a bottom swing derailleur do the trick? Is there something I am missing entirely? Im trying to
    do this on the cheap since one of these days I will be switching to drop bars and road cranks, but
    for now I want to stay with the flats.

    Thanks, Dan
     
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  2. Paul Kopit

    Paul Kopit Guest

    On Thu, 21 Aug 2003 00:13:28 GMT, Dan Brussee <[email protected]> wrote:

    >I have tried a Deore with Top/Bottom pull design and it is WAY too deep behind the seat tube. A
    >brand new LX top pull top swing is "just" able to clear the tire. It has maybe 1/4" clearance at
    >full swing and I really should angle the derailleur just a hair more, but that would make it
    >even closer.

    If you can use a braze or 31.8 clamp, I have just what you need. It's a Sachs will shift the
    44,46,48 large ring on a road bike. $20.

    Should you change your large ring to a 46, a current 105 with some of the front part of the outer
    cage ground down can work for a double. The problem with the 44t ring with a road derailleur is that
    the inward movement of the derailleur cage can be limited by the chain stay.
     
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