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Skipping/jumping underload
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Hi guys!

I just "finished" building my first vintage bike. It's a beat up colnago with all campy parts. I'm having an issue with my chain skipping/jumping when I start pedaling under any load. The front derailleur works fine but the rear does it a lot. I don't feel like it's auto shifting but it's definitely doing something strange. If I put too much load and try shifting, my real wheel sometimes gets misaligned and starts rubbing. Suffice to say I have many gremlins to slay.

Any clue what it might be? New chain on an old cassette? Shifter cables need lube? Limiting screws?

I'm also unsure about how much tension the shift cables need. Sometimes when using the friction shifters, they chain ends up in between the cogs

Any help would be appreciated

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Posted
2 years ago