Originally Posted by
JeffOYB
I'm still messing with my single ring concept. I was going to get a track ring but people tell me they are thicker and meant for a thicker chain. True? Will they work OK with regular chain? Hmmm, I'm using a 10sp cogset back there.
It seems to still fall off occasionally and I'm almost always in a middle cog. I was wondering if it might be related to my using an old Jubilee rear derailer. It certainly wasn't doing much with chain tensioning. So I've installed a newer derailer -- it's long-cage even. I re-added some chain, too. I haven't ridden enough to know if it's a fix or not. Well, it has dropped ONCE with this new setup but that was soon after I took it out of the car so who knows. It was dropping most when doing intense riding at my max output. (Argh.) But it didn't the last time. ...Just once right at the start.
Maybe there are flat non-track rings? I'm guessing that's what the Surlys are.
Track chainring won't work, they are 1/8" wide and need to use a 1/8" chain. That's about 2x as wide between the inside plates as a 10-spd chain.
I had this chain-drop issue a long time ago when I started riding single-speeds. I managed to resolve it over the course of a year with lots of one-legged riding exercises and 3-5 hours of riding rollers per week. Once I was able to ride one-legged on rollers, I never dropped a chain on the single-speed again.