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  1. #1
    Senior Member
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    F. derailleur cable routing problem

    I'm building up a new frame and all is pretty much done.
    When I am routing the front derailleur cable through the bottom bracket guide and then to the front derailleur, I notice that the cable is touching the back of the bottom bracket shell.

    If I leave it like this and ride, I'm concerned that the cable will cut a groove on the frame (similar to a fellow BF member).

    I inspected the shell and there is no hole for the cable to pass through. Is there anything I can do so that it won't damage the frame?


    Here's what happened to his frame
    Attached Images Attached Images

  2. #2
    Senior Member
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    Aug 2005
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    Pittsburgh, PA
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    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
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    Slip a short piece of cable housing liner, a slip-fit piece of heat shrink tubing or even a short piece of cable housing over the cable where it passes the bb shell. The cable will rub inside the tubing and not score the shell.

  3. #3
    Gone, but not forgotten Sheldon Brown's Avatar
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    Jul 2002
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    Newtonville, Massachusetts
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    See: http://sheldonbrown.org/bicycles
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    Quote Originally Posted by seriouslysilly
    I'm building up a new frame and all is pretty much done.
    When I am routing the front derailleur cable through the bottom bracket guide and then to the front derailleur, I notice that the cable is touching the back of the bottom bracket shell.

    If I leave it like this and ride, I'm concerned that the cable will cut a groove on the frame (similar to a fellow BF member).

    I inspected the shell and there is no hole for the cable to pass through. Is there anything I can do so that it won't damage the frame?
    I would put a dab of grease there from time to time, but otherwise don't worry about it.

    Sheldon "Not A Real Problem" Brown
    [COLOR=blue][CENTER][b]Harris Cyclery, West Newton, Massachusetts[/b]
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    [URL= http://harriscyclery.com] http://harriscyclery.com[/URL]
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