Rear derailler problems- Mtbr.com
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  1. #1
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    Rear derailler problems

    I don't know all the proper terminoligy so please bear with me here.

    I noticed the other day that the bottom of the derailler (the two pulleys where the chain goes through) is coming VERY close to my spokes and is actually knicking them sometimes.

    Does anyone know how this is solved? My gears still work fine, but im worrried that it is going to get worse and eventually get snagged in the spokes at speed and causing major problems.

    Anyways, do I need a new derailler? Or is there a quick fix or adjustment that will do the trick?

    Thanks for your time



    Dustin

  2. #2
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    facing the drive side of the bike, grab hold of the bottom of the derailleur, and bend it towards you

  3. #3
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    bent derailer hanger? go to a bike shop and watch how they fix it, then next time you can fix it yourself.

    if it is bent, the safest thing would be to replace the derailer hanger. or you can try to bend it back yourself. don't yank on the derailer cage, you might f- it up even worse.

    here, read this....

    http://www.sheldonbrown.com/derailer-adjustment.html

  4. #4
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    try typing "rear derailler" into google. here's another one.

    http://www.bikewebsite.com/derailler_adjustment.htm

    actually it seems the correct spelling is "derailleur".

    you can stick an allen wrench in that hole in the derailleur next to where it mounts to the hanger. then use that for leverage to straighten the hanger. do that at your own risk. i saw a guy at my lbs do that when i took my bike in once. it helps to see somebody else do it first. just yanking willy nilly on your derailleur can do more harm than good.

    or like i said, if the hanger is bent, just replace the hanger. it's a good idea to have 1 or 2 spares handy at all times. that's assuming your frame uses a replaceable hanger, most of them do, but not all.
    Last edited by cornholio; 08-10-2005 at 08:03 PM.

  5. #5
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    There's actually a tool to straighten derailleur hangers. This tool can fix bent and twisted hangers. Aluminum hangers shouldn't be straightened too often. I always keep a few spare hangers around.

  6. #6
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    If it's still shifting well, I would bet it isn't a bent hanger, I would tighten you low limit screw. It'll have a little "L" next to it, screw that in as far as you possibly can while the derailleur is still able to shift to your lowest (biggest) cog.

  7. #7
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    ok thanks for the replies guys, after work tonight I will see what I can do

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