Bicycle Mechanics - Chain Chatter

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frankr
03-11-04, 07:00 AM
My road bike is fine until I changed wheels. I have an extra set of wheels I use for racing. I just purchased a new bike. After putting a few hundred miles on the bike I swutched to the wheels I use for road races. Both rear cassetts are 12x23 9 speed. With one set of wheels no noise, with the other chain chatter in the front derailleur area. Help.

Frank

55/Rad
03-11-04, 07:56 AM
I have 2 sets and had the same problem. I concluded it was because the difference in the wheels caused the cassettes to not be perfectly matched or aligned in relation to the front derailleur. The angles weren't exactly identical.

I ended up adjusting the front der to the chattering cassette - a very minor amount - only to find it was now quiet for both.

55/Rad
dobber
03-11-04, 08:08 AM
My road bike is fine until I changed wheels. I have an extra set of wheels I use for racing. I just purchased a new bike. After putting a few hundred miles on the bike I swutched to the wheels I use for road races. Both rear cassetts are 12x23 9 speed. With one set of wheels no noise, with the other chain chatter in the front derailleur area. Help.

Frank

Recently experienced this when I mounted a new pair of wheels on my MTB. Cassette position was slightly altered. You should be able to silence the problem by adjusting the derailleurs. Follow the process/procedures as outlined in the Barnett manuals (top of forum).

For me, all that was required was a little bit of tweaking on the rear derailleurs lower limit and indexing adjustment (Chapter 32, page 19). Didn't have to touch the front, by cases vary.

el Inglés
03-12-04, 11:10 AM
I have 2 sets and had the same problem. I concluded it was because the difference in the wheels caused the cassettes to not be perfectly matched or aligned in relation to the front derailleur. The angles weren't exactly identical.

I ended up adjusting the front der to the chattering cassette - a very minor amount - only to find it was now quiet for both.

55/Rad


::::::::::::::ditto :::::::::::::::: :crash:
DieselDan
03-12-04, 03:11 PM
Sounds like, IMO, the dishing is different between both rear hubs, causing the chain to be at a slightly different angle and rubbing the front derailluier.