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Discussion Starter · #1 · (Edited)
It happened this morning while riding. At first I noticed it going up hill. Standing while pedaling and suddenly it was like there was no chain, but only for a second. Then there was tension on the chain again.

This happened several times through out the ride and seems to get worse as the ride went on.

only 300 miles on the casstte and freewheel, 1,000 miles on the chain. Derailleur was adjusted 300 miles ago with the new wheel set

Is this a freewheel problem? or other problem?

thanks for your help
 

· classiquesklassieker
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Be systematic

Bolo Grubb said:
It happened this morning while riding. At first I noticed it going up hill. Standing while pedaling and suddenly it was like there was no chain, but only for a second. Then there was tension on the chain again.

This happened several times through out the ride and seems to get worse as the ride went on.

only 300 miles on the casstte and freewheel, 1,000 miles on the chain. Derailleur was adjusted 300 miles ago with the new wheel set

Is this a freewheel problem? or other problem?

thanks for your help

You should systematically try to isolate the problem.

Let's start with: is it only in one gear? Try replicating the problem while off the bike. Hold the wheel in place with one hand and pedal with the other.

It could be anything from the chainring tooth being worn, chain slippage due to incorrect install or wear or width, cassette wear, rear hub issues. The key is to make different hypothesis, test it, and then move on the next possibility.
 

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A possibility...

Was the front derailleur adjusted at all when this happened? If not and the chainring was too close to the cage when you stood, A slight deflection of the ring can cause the chain to shift slightly. This can cause the chain in the rear to move just enough to cause a skip but not enough to cause it to shift. Try trimming your front derailluer so the chainring is more in the center of the cage instead of closer to one side or the other.
 

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Discussion Starter · #4 ·
ok a LBS mechanic thinks it is just a badly streched cable and worn chain. The chain only has 1,000 but we did find a link that is about to come apart.

So a new chain, new shift cable and housings. Should have the bike back midday tomorrow.
 
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