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Old 04-14-11, 03:40 PM   #1
thorsteno
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Chainring/sprocket question

Hi guys,
I'm preparing a new build with a Rohloff and have a question. I currently run 42/16 chain drive which is a 2.63 ratio. My question is if you keep the exact ratio, is there any reason to scale up or down the chainring and sprocket sizes? I don't plan to violate the minimum ratio of 2.35 suggested by Rohloff. The new drivetrain will be Gates centertrack belt.
Thanks for your input,
Thorsten
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Old 04-14-11, 04:11 PM   #2
fietsbob 
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Ignorant about the belt drive other than you have to open the frame to get it in.

Run a 26" wheel and a 38/16. , just got #2 bike , 406 wheel 53/15 ..

what are the Belt cogwheel combination options?

http://www.bikeman.com/Belt_Drive_System.html

http://www.schlumpf.ch/hp/zr/zr_engl.htm

http://www.philwood.com/products/hubspgs/belthubs.php

Last edited by fietsbob; 04-14-11 at 04:31 PM.
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Old 04-14-11, 04:14 PM   #3
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With a chain, if it doesn't have to make a tight turn on the sprocket, the chain is supposed to last longer. So a larger cog is better than a small one.
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Old 04-14-11, 10:26 PM   #4
greyghost_6
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I agree with Jeepr. I always prefer the solution that lasts longer. The cogs should last longer too.
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