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Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

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Old 08-08-08, 04:20 PM   #1
PaddyyD
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Cyclocross Crank Ratio...help!

Hey I've got an old Schwinn Sprint Bike with vertical dropouts and i wanna convert it into a ss cyclocross bike. I'm a little bit confused on what gear ratio i should run on it...i had in mind something close to a 40/17 but im not sure if that will work for cyclocross well or not. I've ridden my friends bianchi San Jose which i believe has a 42/16 on the freewheel setup and that felt pretty comfortable but i was still considering getting a ratio that is just a little bit smaller so i can climb easier. What ratio do u think i should run on the bike? Im in need of help greatly...i definatley dont wanna buy a new crank and freewheel that im not comfortable with!
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Old 08-08-08, 05:19 PM   #2
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Originally Posted by PaddyyD View Post
Hey I've got an old Schwinn Sprint Bike with vertical dropouts and i wanna convert it into a ss cyclocross bike. I'm a little bit confused on what gear ratio i should run on it...i had in mind something close to a 40/17 but im not sure if that will work for cyclocross well or not. I've ridden my friends bianchi San Jose which i believe has a 42/16 on the freewheel setup and that felt pretty comfortable but i was still considering getting a ratio that is just a little bit smaller so i can climb easier. What ratio do u think i should run on the bike? Im in need of help greatly...i definatley dont wanna buy a new crank and freewheel that im not comfortable with!

If you actually intend on racing it, 42/16 is too big, unless you're a monster. 40/17 is more reasonable. I got my best SS results using 39/18.
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Old 08-08-08, 06:22 PM   #3
PaddyyD
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thanks for the help but do u have any crank recommendations, especially a crank that i could get under or around 100 that is a 39t. what are u using?
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Old 08-09-08, 01:09 AM   #4
Cynikal
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I would look for a used road crank. They come with a 39 and a 53.
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