dhk2 said:
alfeng, is the Shimano 9 sp chain narrower than a SRAM chain? I use HG-93 chain currently; have used SRAM in the past but never measured either. The KMC chain on my track bike is definately wider....that I can tell
I don't know -- I don't have digital calipers; but, I am going to guess that the Shimano chain MUST BE narrower than the particular SRAM chain which the OP is currently using.
Cambria used to list the different widths of all the chains they sold ... but, I don't think they do any longer (at least, I couldn't find the information the last time I looked a year-or-so ago) ... if I had known that the information would disappear then I would have copied all of it down for future reference ...
The only 9-speed SRAM chains that I have are the 89R which I actually bought to use with my Campy cassettes ... but, I subsequently opted to focus on using the 9-speed Shimano cassettes & Shimano chains (why pay more?) ...
One of these days I guess I'll put one of those 89R chains on to see whether there is rubbing when the chain is on the inner chainring & the smaller cogs ... if it rubs, then I'll relegate the 89R chains to the non-Shimano cassettes.
dhk2 said:
BTW, I do get a light rubbing from the big ring when on the smallest two cogs. It's not severe, and since I don't cross-chain not a problem at all. My bike has an FSA triple chainring with the "medium" ISIS spindle...113mm.
Is that on a frame with a 135mm rear or a 130mm rear?
On a frame with a 130mm rear, I would think that the 113mm spindle should be more than long enough to preclude the chain rubbing against the outer chainring when the chain is on the middle chainring & the smaller cogs ...
If the frame has a 135mm rear, then changing to a 118mm spindle should eliminate the chain rub (if it ever becomes something that you want to achieve).