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Thread: Excessive Shifting - Frequent Chail Derailment?

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    Default Excessive Shifting - Frequent Chail Derailment?

    Hey everyone!

    I noticed that my chain keeps derailing everytime I shift and I was just wondering if it's caused by excessive shifting? I oil it up regularly and maybe there's an adjustment that I need to make in order for this to be resolved?

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    Tighten the chain?

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    What do you mean by derailing? is it coming right off the front or rear cogs? Or is ghost shifting between gears on its own?
    Last edited by 98type_r; 06-16-2009 at 02:39 PM.

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    Originally posted by 98type_r
    What do you mean by derailing? is it coming right off the front or rear cogs? Or is ghost shifting between gears on its own?
    It's a little bit of both actually. It comes off of the rear cogs and on 6, it ghost shifts and automatically goes to 7 (the smallest gear.)

    Oh yeah, which is high and low gear? Is the high gear the small one or vice versa?

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    If the teeth on the gear isn't worn, have you tried adjusting the derailleur

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    think of it as a car.
    high gear = faster

    You have 3 potential problems

    1. Limit screw adjustments will solve the chain coming off the cassette (cogs).
    2. Cable indexing (tension) should eliminate the ghost shifting.
    3. A bent rear derailleur hanger.

    This link should solve your problems if it's the first 2, but only if you're somewhat mechanically inclined or have at least an hour to do it by trial and error. You shouldn't have to worry about #3 unless you've crashed, dropped the bike, or had some other impact to the rear derailleur.

    http://www.parktool.com/repair/readhowto.asp?id=64

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    Originally posted by 98type_r
    think of it as a car.
    high gear = faster

    You have 3 potential problems

    1. Limit screw adjustments will solve the chain coming off the cassette (cogs).
    2. Cable indexing (tension) should eliminate the ghost shifting.
    3. A bent rear derailleur hanger.

    This link should solve your problems if it's the first 2, but only if you're somewhat mechanically inclined or have at least an hour to do it by trial and error. You shouldn't have to worry about #3 unless you've crashed, dropped the bike, or had some other impact to the rear derailleur.

    http://www.parktool.com/repair/readhowto.asp?id=64
    Thanks!

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    Can also be a worn chain, dirty chain or a chain that has a kink or is damaged.

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