Join Date: May 2010
Location: Madison, Wisconsin
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Try taking the derailer pulleys out and greasing the bushings. If they're dry they'll squeak like that. Also, make sure each pulley spins freely. What rear derailer, specifically?
Edit: oops, I just watched the video.. Well, you should grease the pulleys either way. I have a derailer that is noisy like that. New chain, new cassette, clean derailer. I can't figure it out. One thing to check is that the chain is running smoothly from the cassette to the upper pulley. If something isn't aligned the chain will not feed smoothly. Check by backpedaling very slowly and watching each link of chain go from pulley to cassette.
Last edited by FastJake; 04-25-11 at 09:38 PM.