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Chain jams on higher gears

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aga021 Offline
New Member


Posts: 1
Joined: Sep 2012
Post: #1
Chain jams on higher gears
Hi,

I have very little experience of mending a bike myself so I apologise if this is a stupid question.

I have just acquired a mountain bike, and changing between the lower (rear) gears works, although is a little "clunky." But if I go to the higher gears -6,7,8- the chain will jam after about 20 seconds, and the pedals will not budge forwards until I lift the chain off of the rear sprocket and replace it. When this happens, I can back pedal but with absolutely no tension. It's not so fun to sort this several times a journey, so I'd be most grateful if anybody has any advice!

(The previous owner says they did not have this problem, so it may be related to me knocking something when I replaced the rear inner tube).

Thanks!
Sep 16, 2012 02:07 AM
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nfmisso Offline
Veteran Member

San Jose, CA
Posts: 2,516
Joined: Jul 2010
Post: #2
RE: Chain jams on higher gears
need pictures from many different angles

Nigel
Sep 16, 2012 03:26 AM
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RobAR Offline
Veteran Member

Mountain Home, AR
Posts: 725
Joined: Sep 2010
Post: #3
RE: Chain jams on higher gears
Is the chain coming off of the smallest cog and getting jammed between it and the frame?

Wheelies don't pop themselves. (from a QBP fortune cookie)
Sep 16, 2012 05:47 AM
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Bill Offline
Veteran Member

NY,USA
Posts: 2,766
Joined: Sep 2009
Post: #4
RE: Chain jams on higher gears
Lemme add Rob sticking chain link Wink . BUT listen to the above first... Wink

Good maintenance to your Bike, can make it like the wheels are, true and smooth!
Sep 16, 2012 04:22 PM
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