Agh. And I thought I was being so clever. Allow me to explain.
I used to run a derailleur as a chain tensioner on my singlespeed. Cheap, effective, kinda ugly.
But I recently discovered, much to my delight, that my chainstays are just the right length to run
36x18 without need of a tensioner at all. Terrific! The problem is that I can't stand 2:1 for
riding on the street. It's just too low a gear. I'm fine with 36x16, though. But if I cut my chain
down short enough to run 36x18 with no tensioner, there isn't enough chain to run through a
derailleur in 36x16.
The obvious solution was to pick up a one-cog chain tensioner. I'd heard about the problems people
have had with the Surly Singleator, but the configuration was ideal for my purpose, and how bad
could they really be? Plenty bad, it turns out. My frame does not allow for me to use it in "push
up" mode, so I put it on in "pull down mode, and
piece of [censored].
So now I run a derailleur as a chain tensioner again. Sigh.
CC