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Single Chainring 'Cross setup: crankset options(4 posts)

Single Chainring 'Cross setup: crankset optionswake
Sep 18, 2003 5:45 AM
Just picked up a Conquest frame & fork off ebay (new, from GreenFishSports), working on building up a 1 x 9 cross bike. I have aero brake levers, a bar, the stem, the canti's, seat and seatpost, but I need to work on the drivetrain. I'd like to do this really cheap, and am not too concerned about weight.
For simplicity, I want to keep it as a single front chainring. I'm planning on using a mtn rear derailleur and cassette (probably 11-32). Probably going to use a 42 for the front ring.

Since I don't have any spare bottom brackets or cranksets lying around, here's what I'm thinking: a triple is better than a double because the middle ring creates a straight chainline with the middle gear in the cassette - not as much chain cross when you're at extreme ends of the cassette. I'm planning on using chain guards - any issues using these with a triple crankset?

Any other thoughts on drivetrain/single chainrings are welcome!

When it's finally built, I'll post some pics...

-m
re: Single Chainring 'Cross setup: crankset optionsJakob
Sep 18, 2003 8:27 AM
Last year I had good luck with a single ring set up by using a splined XTR BB and a Shimano Ultegra double crankset. This, too, was on a Conquest.

I don't know much more about it than that. Good luck!
just use a standard crankclimbo
Sep 19, 2003 8:57 AM
a triple is not needed. You can adjust chainline by using different BB length. In the end, most run a single crank and you are good to go. Chain cross is not a huge issue for anyone I know using a standard crank.
re: Single Chainring 'Cross setup: crankset optionsdugmn
Sep 20, 2003 8:02 PM
Look at cyclocrossworld.com, they have kits for singles. They use a standard double crank. A chainguard replaces the small ring, and a second chainguard is attached outside the large ring with extra long bolts. They even have a review on their site about a single ring.