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Derailleur problem??(5 posts)

Derailleur problem??chaduardo
Jun 2, 2003 5:53 AM
When peddling very hard, my chain seems to slip or jump. I examined the rear derailleur and it seemed to be lined up with the cogs. To make sure, I adjusted the barrel adjuster both directions to no avail. I also tightened the B screw. The derailleur has some play if I wiggle it-- significantly more than that on my wife's bike.

Is there anything else I can do? Should I just buy a new one? The current one is 5 years old with a few thousand miles on it.


Which problem is it?....TFerguson
Jun 2, 2003 6:01 AM
Does it jump teeth on the same cog? On all cogs or just the one(s) used the most?

Or does it try to shift to another (usually larger) cog?

Which problem is it?....chaduardo
Jun 2, 2003 6:22 AM
The chain stays on the same cog.

It happens for several of the cogs (smaller ones). It may happen for all cogs, but I cannot put sufficient stress on the drivetrain in my neighborhood since all roads are flat (central IL).
Which problem is it?....eddie m
Jun 2, 2003 12:07 PM
Unless you are using an old chain with a new cassette, you've probably worn out at least the smallest cogs. Replace at least the cogs that skip and the next biggest one, and the chain.
re: Derailleur problem??tookie
Jun 3, 2003 7:09 AM
could be the freehub body. i just had to replace mine cuz there were tons of small nicks in the splines. caused certain cogs to slip just slightly when under pressure.