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Old 07-02-14, 06:21 PM
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I wouldn't shorten the chain unless you're running a max length chain (barely clears the pulleys in the small-small) or you go to a smaller small chainring or cog.

If you're really adamant about no front derailleur then I'd just a N-Gear Jumpstop on the inside of the ring. To the outside… don't know, but a big effort in the small-small (like a 34x11 for example) will pull the chain toward the outside of the bike. If you're leaning to the right, if you hit a little bump or something, the chain will come off. I watched it happen in front of me in a Tues Night race a few weeks ago, some jokers insist on doing the race on single speeds (another one showed up on a fixed gear and was told to pull out of the race).

If you can stand the idea of a front derailleur I'd either use something like the downhill racers use or get an older/worn front derailleur and cut the tail off. You want just the U shape thing at the front. While you're at it you can drill holes in it and stuff. Or you can fabricate something with a light band and some piece of welded aluminum (?) to hang a U shape cage over the chain. Remove all the cables and stuff, you just want the U shaped guide so your chain doesn't want to pop off.

Aluminum chainring bolts are just more sensitive to over-tightening. If you hear creaking then it's probably done. If you buy Ti ones you would have more reliability and you could use them on your bike normally. Just use anti-seize and loosen them regularly so they don't freeze.

Is it possible to use downtube shifters? Or are there parts where you need to be able to go while shifting?
"...during the Lance years, being fit became the No. 1 thing. Totally the only thing. It’s a big part of what we do, but fitness is not the only thing. There’s skills, there’s tactics … there’s all kinds of stuff..." Tim Johnson
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