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Chain skipping and rear derailleur issues

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Chain skipping and rear derailleur issues

Old 08-25-17, 03:51 AM
  #1  
Jaymay
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Chain skipping and rear derailleur issues

Got this trek 4400 MTB second hand. Firstly the chain skips every time I pedal hard. It's not the chain moving up and down a cog. Secondly when changing gears the rear derailleur doesn't go up or down the cog. The derailleur does move up but and down but not up or down the cog. It's always on the largest cog. Limit screws are set fine. When I brought to the shop, I was told it's something to do with the cable( cost too much to repair in the shop).pls help
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Old 08-25-17, 03:35 PM
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maddog34
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ummm... your bike is missing the rear-most cable housing... and it's not stuck in the 1st gear, that is the last gear.... gear 7 or 8.

seek knowledgeable assistance in re-cabling you rear derailleur.

or go take pictures of a bike that has the rear der. hooked up and working, struggle trying to do it yourself, then go find knowledgeable assistance.

OR... watch any of hundreds of Youtube vids on recabling derailleurs, then try to do it yourself....
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Old 08-25-17, 06:53 PM
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You have 2 problems. As maddog said you are missing the last piece of cable housing so it can't shift. The slipping when peddling hard is most likely freehub pawls worn or gummed up.

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Old 08-25-17, 11:39 PM
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If the chain slips while staying on the same sprocket, chain or cassette may be worn out.

But I'd suggest getting the huge cabling error sorted out first, to see how much that influences things.
I'm a bit concerned about the cable "cost too much to repair at the shop".
A simple cable replacement shouldn't be much.
If you can't afford that, it seriously limits the kind of repairs you can do.
Even basic parts cost some money.
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Old 08-26-17, 07:55 AM
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Originally Posted by dabac View Post
If the chain slips while staying on the same sprocket, chain or cassette may be worn out.

But I'd suggest getting the huge cabling error sorted out first, to see how much that influences things.
I'm a bit concerned about the cable "cost too much to repair at the shop".
A simple cable replacement shouldn't be much.
If you can't afford that, it seriously limits the kind of repairs you can do.
Even basic parts cost some money.
"Cost too much to repair at the shop" = more than OP, for whatever reason, wanted to spend.

Try the Park Tool website. They have a good set of step-by-step instructions for most bicycle tuning and repair tasks.

Good luck!
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Old 08-26-17, 08:18 AM
  #6  
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Originally Posted by Retro Grouch View Post
"Cost too much to repair at the shop" = more than OP, for whatever reason, wanted to spend.
Good luck!
I would be inclined to ignore that particular shop and go somewhere else. I might take a guess or be sure that the shop involved are just...


Or I could be wrong. Of course if the shop explained what reasonably needed to be done and the OP nixed it due to cost...

Last edited by chorlton; 08-26-17 at 08:31 AM.
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