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  1. #1
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    first ride....

    I just finished putting together a used Kelly Ro sham bo. Went out tonight (brrrrrrr) and ran into a problem. When I really torqued on the cranks in a low gear, there was so much flex that it would actually drop the chain!! I'm guessing that either I'm too big (6'2" 190lbs) to ride light-weight steel frames, or something's wrong with the bike. Is the latter is true then what could it be? Bent der hanger? I'm all ears..

  2. #2
    Where's Toto?
    Reputation: endure26's Avatar
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    When you say "drop the chain" I'm assuming you mean off the front end...

    Not so bad: bent chainring(s), chainring bolt(s) loose, crank bolt needs tightening, front deraileur out of adjustment (mis-aligned cage), excessive play in BB

    Bad: You're too big, frame is misaligned, frame is damaged

  3. #3
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    kinda

    What happens at first is a small jump in the chain at the rear der, then if I really get on it there's all-out major chain-suck.

  4. #4
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by new kelly
    What happens at first is a small jump in the chain at the rear der, then if I really get on it there's all-out major chain-suck.
    New or used chainrings?
    mtbtires.com
    The trouble with common sense is it is no longer common

  5. #5
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    used

    it's a used xtr crankset (952).

  6. #6
    Big Wheel Homer !!
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    check the chain to make sure you don't have frozen link. If the chain is not bending when it goes thru the derailleur it can hang up sometimes.

    Steve

  7. #7
    Where's Toto?
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    Make sure you don't have a stiff link. You can spin the crank backwards. Watch for a link to jump when it hits the deraileur pulleys. Check the section of chain that jumps for a stiff link. If the link is stiff, give the chain a little flexing back and worth sideways to loosen it.

    Also, make sure the chain your using is compatible with the cassette - ie you're not running an eight speed chain on an nine speed cassette or vice versa.

  8. #8
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    I think Shiggy Nailed it on the head..

    Used chain rings and a new chain can be a bad combination. Try replacing the rings and have a fresh Drive train. I'll bet the problem will go away.
    MTBR is serious stuff.
    You never get better until you get out of your comfort zone.

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