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Campy Mirage with Poor Shifting: Looking for Advice(7 posts)

Campy Mirage with Poor Shifting: Looking for Advicejcheyney
Jun 18, 2002 3:25 PM
I have a Univega with the Campy Mirage 9speed. I am having some chain skip (difficulty engaging) in three of the gears on the rear cogset. It only seems to skip on the third, fourth, and fifth gears (from the large side) and only when I shift up onto the gears, not when I go down onto them. Any ideas?
Clean cables, and mechanisms.Trek Racer X
Jun 18, 2002 3:55 PM
Clean out all the gunk, which may impair shifting. Also cables, housing, or dirty cassetts, could be the culprit. Pretty much clean, and lube everything. If that doesn't work, then their might be faulty mechanisms in the shifters.

Also, shifting involes derauillers, chains, chainrings, cassetts, and so on. It could be any of these, that disrupt smooth shifting.

Trek racer X
re: Campy Mirage with Poor Shifting: Looking for AdviceTomS
Jun 19, 2002 10:18 AM
If the chain is moving to the correct cog, but is skipping when you apply pressure, the chain and/or cog might be worn... I just went through this, I waited way too long to replace my chain, and probably didn't keep it clean enough in the first place. When I finally replaced it, the cogs had been worn down enough that the new chain didn't mesh right with the cogs. Whenever I put more than a little pressure on the pedals it would skip.

I got a new cassette and everything's happy now! If it's only on certain cogs and you can isolate them, you might be able to just replace those cogs without buying a whole cassette.

Plus now I can say I have some chorus components on my bike ;) (the rest is daytona)
re: Campy Mirage with Poor Shifting: Looking for Advicejcheyney
Jun 19, 2002 6:20 PM
I read the idea about the worn cogs elsewhere bu the bike only has 600 miles on it. Doesn't that seem way too early?
re: Campy Mirage with Poor Shifting: Looking for Advicecurlybike
Jun 19, 2002 6:38 PM
The derailleur cable probably has stretched. If you stand behind the bike facing the bike turn the little adjuster at the rear of the der. ccw 1/4 turn and see if it gets better. Repeat as required or until it starts to get worse
re: Campy Mirage with Poor Shifting: Looking for AdviceTomS
Jun 20, 2002 6:06 AM
Yeah, probably... I guess I mis-understood the problem, I thought it shifted into place, but once it was on the correct cog it would skip on that cog. My chain/cassette combo had about 3k miles on it, and was still shifting smoothly until I replaced the chain because it had stretched. That's when I found out the cogs were worn so they wouldn't mesh with the new chain.

If it's just not shifting onto the right cog, I'd agree with the other posts, you probably need to adjust the cables. Good luck!
re: Campy Mirage with Poor Shifting: Looking for Advicetj90
Jun 20, 2002 7:24 PM
Check out this link:
http://forums.consumerreview.com/crforum?viewall@@.efab8b4

Does that describe your problem?

Start with the easy things first. Replace cable, housings and readjust the derailleur. If the shifting does not clear up, I would investigate the broken ergo. www.campyonly.com talks about this in detail.