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  1. #1
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    Fixed the derailleur last night on my old bike

    Was talking to friend of mine to get him to biking with me, I recently bought a Specialized stumpjumper, and I have a 18-year old hybrid sitting at home.

    Got him to try out the hybrid but no good with the front and back derailleurs. The front was rubbing against the chain, the rear the cable was loose and the hanger was off quite a bit. Not knowing what to adjust, thought we'd start with one of the adjustment screws and 3 hours later, got the bike fixed up.

    We kept adjusting the screws both ways, not sure if there's a rule of thumb as far as which sprocket should be on before adjusting? This way my first attempt to fix any bikes, I wouldn't try it to my Stumpjumper but for the old bike, there's nothing to loose!

    Would appreciate any tips on adjusting the derailleurs.

  2. #2
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    Do a google search

    "derailleur adjustment" gives you several options, including videos. That should be everything you need.
    'If Wal-Mart sold parachutes, who would jump?' Frank Havnoonian (quoting his father) Drexel Hill Cyclery

  3. #3
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    Make sure your derailleur hanger isn't bent before you start too.

  4. #4
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    The screws set limits of travel for the derailleurs. You want to adjust them so that the chain can't travel too much and get jammed into the spokes or frame or fall off the cranks. The shifting from gear to gear is adjusted with the barrel adjusters or by changing the cable position in the pinch bolt. Basic procedure is to set the limits, without cable tension when possible, and then set shift indexing. Here's a comprehensive look at the procedure:

    Park Tool Co. » ParkTool Blog » Rear Derailler Adjustments (derailleur)
    Don't you hate it when a sentence doesn't end the way you think it octopus?

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