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SRAM Chain = Problem?(9 posts)

SRAM Chain = Problem?kg1
Jun 8, 2003 3:20 PM
I just installed a SRAM PC59 chain on my bike (9 speed Ultegra) and the drivetrain's performance has gone from great to poor. Now I gets lots of chain chatter when I'm in the big ring/19 combo (12-23 cassette), and the derailleur won't down-shift to the 14 cog. To get to the 14 I have to go down to the 13, then up to the 14.

I did have an Ultegra chain before. I'd guess that I have about 3k to 4k miles on the bike and this is the third chain, so I wouldn't expect too much wear on the cassette. I didn't see a lot of stretch on the chain I replaced, and I cut the new chain to the same size as the one I replaced.

Any ideas on how to solve the problem? Should I have bought a better (more expensive) chain -- say the SRAM PC89?

As always, thanks.

kg1
YMMV, but.....Alexx
Jun 8, 2003 5:43 PM
4k miles on a cassette is a LOT of miles. I'm betting that the chaces are 50-50 that the cogs are slightly worn.
SRAM Chain = BIG Problem !!!pitt83
Jun 9, 2003 4:17 AM
Post below re: Specialized crankset.

I fought this for over a year w/o ever getting it to work right on 105 group. Never had a problem until I changed from Z chain to SRAM. Eventually swapped the entire drivetrain to Ultegra (chain too) and all OK.

The only advantage to SRAM is the powerlink and I can't get it to work well anyway.
SRAM Chain = BIG Problem !!!Banky
Jun 10, 2003 8:43 AM
I was thinking of going to a scram from d ace. Everyone raves about the scram, is this going to be a mistake?
Worth a tryGalibier
Jun 10, 2003 10:12 AM
I recently went from a Dura Ace chain to an SRAM PC-99. I'd say the SRAM shifts as well but is noisier. However, it sure is nice to be able to easily remove the chain at cleaning time. If the SRAM powerlink (or whatever it's called) works with the Dura Ace chain, then I'd say that would be the best combination.
re: SRAM Chain = Problem?Mazinger
Jun 9, 2003 5:52 AM
Sram chains are a bit wider than Shimano. .3mm I think.
No problemDropped
Jun 9, 2003 11:35 AM
Personally, I've used nothing but SRAM chains for years. I've used them on both 105 and Ultegra drive trains with zero problems.
Double or triple?pitt83
Jun 9, 2003 12:13 PM
My nightmare was with a triple. If the spacing up front is what's difficult, your double may be more reliable. Earlier reply said SRAM is 0.3mm wider. Could be the difference maker?
Double or triple? SRAM vs Shimano Chain Width.buckeye_demon
Sep 19, 2003 6:50 PM
I just physically measured a shimano HG-72 chain and a SRAM PC-59 chain. The Shimano is about 0.3mm wider than the SRAM. Interesting is how the shimano steps the chain link. The SRAM is about the same width from front to back. The wider Shimano links look like they will grap the rivets and cassette grooves better for faster cleaner shifting.