Chain tension - horizontal dropouts- Mtbr.com
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  1. #1
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    Reputation: Swami Scott's Avatar
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    Chain tension - horizontal dropouts

    Horizontal dropouts, no tensioner... how tight do you make the chain? I have 2 Spot tensioners to pull it back. What are we talking about - an inch of play up and down on the chain?

  2. #2
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    Chain Tension

    Quote Originally Posted by TeamSwami.com
    Horizontal dropouts, no tensioner... how tight do you make the chain? I have 2 Spot tensioners to pull it back. What are we talking about - an inch of play up and down on the chain?

    I tighten my chain as tight as I possibly can and stop just before it creates a "tight" spot in the pedal stroke. On all my SS I don't have any chain play or very little. The chains are tight but not tight enough to create any resistance or "tight" spots when pedaling which is hard on parts. An inch of play up and down on a chain is way too much.


    Cheers!

  3. #3
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    Quote Originally Posted by TeamSwami.com
    Horizontal dropouts, no tensioner... how tight do you make the chain? I have 2 Spot tensioners to pull it back. What are we talking about - an inch of play up and down on the chain?
    Yep, as tight as you can get it without causing substantial resistance to spinning the cranks.

    Most BB/crank/ring setups don't spin perfectly evenly: I memorize the point at which my cranks pull the chain tightest. Then when adjusting chain tension, I turn the cranks to that point, pull the wheel back as tight in the dropouts as I can by hand, and clamp down the axle. Perfect tension every time.

  4. #4
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    According to the Barnett Manual...

    The appropriate amount of slack for a single speed drivtrain is 1/2" of play.
    "Speak softly and carry a big stick." T.R. Roosevelt

  5. #5
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    I dunno...

    I dunno if I'd go with quite a half inch, but the words "as tight as you can" scare me even more, especially if the guy making the inquiry is using mechanical tensioners. Personally, I have great experience with a semi-loose chain, although I doubt there is more than 3-4mm up and down play in the chain even when it is in the "loosest" place in my drivetrain's rotation.

    My 2 nickels, anyway...

    --Sparty

    Quote Originally Posted by SenorPedro
    The appropriate amount of slack for a single speed drivtrain is 1/2" of play.
    Last edited by Sparticus; 03-06-2004 at 06:27 PM. Reason: My user title says it all
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  6. #6
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    Smile It just needs to be...

    tight enough so it won't come off. Tight spots will speed up transmission wear amongst other things like slowing you up(a little).

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