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  1. #1
    worldtraveller worldtraveller's Avatar
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    have u had this happen

    ok today i was out riding my mt bike on trail.

    All of a sudden, chain jam, so i had to get off bike, only to find that my middle ring was broken.

    like one part was totally broken away and rest was bent.
    I have no clue as to why this happened.
    Is it possible that when i installed it , it was not tight enough as the other bolts were all loose.

    It was a newer chain ring as i installed it a few months ago with no problems.
    well back in May.
    it was working fine as i was riding on it quite a bit with out problems, but the odd times chain would skip here and there.

    So why would this happen?
    do replace? should i replace the entire crankset? or just get a new middle chain ring?

    As even as i can ride in the lower ring and the big ring, but my chain still skips

    i have a newer chain and the rear cogs are new as well.
    just the front is a bit older
    derailleurs are older shimano XT and are set fine,
    so what is the suggestions?

  2. #2
    Senior Member bikeman715's Avatar
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    Bike Nashbar AL-1 ,Raligh M50 , Schwinn Traveler , and others
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    just replace the chainring and chain .sound like the chain is bent too .
    bikeman715

  3. #3
    worldtraveller worldtraveller's Avatar
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    It is a brand new chain though.

  4. #4
    Senior Member
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    rock lobster 853, dawes kickback1993
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    I took apart a shimano deore crankset to clean it once, and what i did notice was that there are very slim brass washers between the chain-rings bolt holes. I lost one, but re-assembled the crank without that one washer. I havent had any probs with it coming loose. Maybe these washers are missing from your crankset? I wonder if that is the reason your middle ring came loose in the first place?

  5. #5
    worldtraveller worldtraveller's Avatar
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    I will have to take a look. Perhaps buy some new ones.

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