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Old 02-11-07, 11:37 AM   #1
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Front Derailleur - chain hanging up?

My wife complained that her bike is giving her shifting problems. I put it on the stand. When I try to shift into the large chainring in front, the chain jams between the big ring and the derailleur cage. If I push hard it shifts, but it certainly isn't smooth. I haven't ridden it to see what it's like on the road, but it shouldn't be doing this on the stand, I don't think. I cleaned and oiled her chain to make sure it wasn't binding. I don't want to mess with the front derailleur - like changing the height or the rotation around the seat tube - until I know what I'm doing.

Is there a usual cause for this that I'm not aware of?

It's an old, rigid Specialized Rockhopper.
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Old 02-11-07, 12:05 PM   #2
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Sounds like you might need more cable tension. Click here to learn how and other derailleur adjustments.
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Old 02-11-07, 12:20 PM   #3
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Rigid Rockhopper? Must be at least ten years old? Look close at the inner plate of the der. It probably has a groove worn in it from the chain rubbing and when you try to shift up it hangs on this groove. They also do this when the pivots get worn and the der. wants to twist rather than push the chain over.
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