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Old 06-25-10, 08:32 AM   #1
wiscoerik
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Squeak when shifting

My road bike squeaks when I shift to bigger cogs with the rear derailleur. For some weird reason, I don't seem to hear the squeak until the 2-3 mile mark and then it progresses to every downshift eventually. Doesn't seem to matter what ring in front I'm in.

I thought it might be my cleats... I know that doesn't make sense but it sounds just like the squeaking from a Look cleat that needs to be lubed or changed. I made the change and the squeaking hasn't stopped or changed.

The bike is relatively new. Shimano 105 10-speed. About 1200 miles on it. I don't ride this bike in the rain per se, but it's seen a few drizzles and I ride past midnight often when there is lots of fog around here. Is it possible that the squeak is coming from the cables?

Thanks much for any help.

Erik
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Old 06-25-10, 09:12 AM   #2
njkayaker
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Do the 105 rear-derailleur pulleys use bushings or bearings?

A little cleaning and greasing of the bushings might kill the squeak.
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Old 06-25-10, 09:22 AM   #3
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just oil everything. I believe most 105 derailleurs use a sealed bearing on the lower tension pulley and their ceramic bushing on the G-pulley. Squeak is probably either the deralleur return spring or possibly your chain.
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Old 06-25-10, 10:28 AM   #4
wiscoerik
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Thanks very much for the suggestions. I went at it with some oil and will give it the day to seep into any nooks and crannies. Then I'll take her for a spin this evening to see if that works.

FWIW I have always kept my chain well lubed but not much more.
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Old 06-25-10, 12:10 PM   #5
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Quote:
Originally Posted by the sasquach View Post
just oil everything.
This didn't work for me until I disassembled and cleaned and oiled the bushing.

Quote:
Originally Posted by wiscoerik View Post
FWIW I have always kept my chain well lubed but not much more.
It appears you only get the noise when shifting. If so, I don't think it's going to be the chain.
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