7 speed shifting problems: Uniglide v Hyperglide
so I recently switched out my 7 speed hyperglide rx100 wheelset with a 7 speed uniglide 600 ultegra wheelset. When I switched, I also bought an 8 speed SRAM chain for the bike.
Here's my problem:
Shifting was perfectly fine with the rx100 + KMC chain, but the ultegra + sram chain is super noisy and slow at shifting to the larger cogs. Dropping down to smaller cogs is fine. I talked to a mechanic and he told me that the problem is in the newer chain made for hyperglides on the uniglide cluster... that the bumps in the hyperglide cluster really help shifting. He also said that after a certain break-in period, the sram chain will work just fine. It pains me to hear the noisy shifting though...
I do have an older shimano chain that came with the bike that had the 600 wheelset, so I can try installing that one. I also have an older Sachs one that I can throw on. I'd just rather not break any chains and just use this one, so I'd like to know your guys' opinions and if the chain + cassette is really the problem. It's not a problem though, I just want to get this thing perfect before the STP on saturday.
If it helps, I'm running 7 speed RSX shifters on 600 ultegra drive train. STI shifters, cassette, and pulleys are all i perfect condition.
Last edited by tomio; 07-12-10 at 09:49 PM.