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  1. #1
    Ridin' in iRie meditation
    Reputation: TurnerFred's Avatar
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    Jan 2004
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    New question here. Chain length question? 2-ring setup

    I've always used the largest chainring to largest cog method for chain length. Now that I'm running a two-ring setup up front, I'm wondering if this method still works or is there some reason that it won't.

    When I dropped the big ring from my crank, I left the chain length as it was without really thinking about it. It's time to replace the chain, and now I see that I never accounted for the ring change.

    All that said, I can't say that I've had any trouble shifting, so maybe it's a non-issue. Anyone know the rule for chain length for 3-ring v. 2-ring setups?

  2. #2
    No, that's not phonetic
    Reputation: tscheezy's Avatar
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    Dec 2003
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    Let all the air out of your shock, or remove the coil from your shock. Let the bike sag to near bottomout. Now do the big-big-plus-two-links method. This takes the "chain growth" of the suspension linkage into account.
    My video techniques can be found in this thread.

  3. #3
    Ridin' in iRie meditation
    Reputation: TurnerFred's Avatar
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    Thanks Cheeze, worked like a charm!

  4. #4
    ... I guess you won't be
    Reputation: jokermtb's Avatar
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    Mar 2004
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    Beware, careful with that method. The furthest the axle is from the main pivot is often at the mid-point of the suspension travel - especially on rocker arm equipped single pivot bikes like Turners. But the add-to link trick will work to take that into account. Which essentially means you don't even have to bother with removing your shock.

    Just be sure to add-in an extra extra link into the mix, if using a SRAM quick link style chain [it's really plus 3 links] - you'll be too short otherwise.....you'll see...you can always take out a link later, if needed!
    Yes, we do indeed rock...http://www.myspace.com/spokedrunkies

  5. #5
    mtbr member
    Reputation: rick rocket's Avatar
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    May 2005
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    A lot will depend on what 2 ring setup you are using, most commonly 36t, 22t but if you are using a bigger big ring your ratio will be too different to accept the chain. I have always used the "add 2 links" method without removing the shock and never had any trouble, just make sure you are adding 2 complete links not just the fish plate and next connection - as for SRAM connecting split link if you are using one you only add 1 extra link not 3 as the connecting link is a link = 2 links done. Hope that helps.
    God....whatever i feel like doing!!!

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