I am about to convert my 2 chainring setup to a single chainring. My crank is 110mm 5 bolt. I intend to use a 42T ring with a 11-28 10 speed cassette (on SRAM Force RD). My goal is smooth operation and no rubbing. The choices I found so far are:
which of the above would you recommend (or you would not)?
So far I think I will want to use the Paul Components Chain Keeper (and alternative is the K-Edge Chain Catcher with a Ring Guard). Any pros/cons are very much welcome.
I ran a 39 Thorne ring with a 11/27 and 11/25 all last season, 10sp.
The Thorne ring weighs only slightly more than a DA ring or a similar size sram ring, but it's solid, stiff and reliable.
I might buy a double Thorne set up for this season and go back to double up front.
I could easily hit just over 30 mph no problem with the 39 ring and 11 or 12.
Plenty for cx. You can find small washer spacers to get the chain alignment inside or outside of the crank spider.
BBG chain guard on the outside with a jumpstop inside, never dropped the chain, 15-20 cx races last year.
OK, just tested the installed setup:
All works superbly. No rubbing against the chain guard. Precise shifting and smooth ops throughout 11-28. Gearing choice OK (so far). Damn, the 2012 X-Fire rides like a dream :-)
Martin, please please please tell me how you made this work. I have the same bike and I'm trying to set up a single ring, I've struggled through every combo I could find and I can't get a chain catcher to be in the right spot with the flared seat tube on the Ridley. I have a 40T Thorne Koksijde 110mm and a 44T ring guard. The 40T chainring is set up in the inner ring position. I can't get the K-edge to work because the non-flared portion of the seat tube is too high up. A picture of your setup would be awesome.