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  1. #1
    wannabe
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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

  2. #2
    coprolite fietsbob's Avatar
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    Jun 2010
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    NW,Oregon Coast
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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.

  3. #3
    Senior Member jeepr's Avatar
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    Mar 2011
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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.

  4. #4
    Pleasurable Pain greyghost_6's Avatar
    Join Date
    Aug 2006
    Location
    Bloomington, IN
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    Voodoo Rada, Voodoo Wazoo, Smith & Wesson Tactical,
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    I agree with Jeepr. I always prefer the solution that lasts longer. The cogs should last longer too.
    I had to re-learn how to walk once, but never needed to re-learn how to ride a bike. Cyclist for life.

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