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Old 07-28-11, 11:04 AM   #1
worldtraveller
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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?
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Old 07-28-11, 12:42 PM   #2
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just replace the chainring and chain .sound like the chain is bent too .
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Old 07-28-11, 02:46 PM   #3
worldtraveller
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It is a brand new chain though.
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Old 07-28-11, 02:56 PM   #4
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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?
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Old 07-28-11, 02:59 PM   #5
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I will have to take a look. Perhaps buy some new ones.
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