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  1. #1
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    Chain compatibility

    So i recently purchased a wheel set fit with an 1/8" cog and threw it on my old road bike.

    I shortened the chain and everything however the teeth don't seem to accept the chain in a smooth manner. The chain is the same one that came on the old road bike. I'm guessing its a 3/32" chain.

    My question is: Since the rear cog is 1/8" could the be the reason why the 3/32" chain doesn't move smoothly ? Could a 1/8" chain fit both the rear cog and the existing 3/32" chainring in front ?

  2. #2
    Fresh Garbage hairnet's Avatar
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    1/8" cog has teeth too wide for the 3/32" chain

    I'm guessing the 1/8" chain will work on a 3/32" chainring. I'll let someone else give a definite answer

    [edit]

    aren't 1/8'' cogs used in bmx?

  3. #3
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    I don't believe so. Sheldon says their usually found on track bikes whereas, 3/32" are usually found on old road bikes like mine.

    I stupidly bought the wheelset with 1/8" cogs without realizing the chain probably wouldn't fit.

  4. #4
    Fresh Garbage hairnet's Avatar
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    ok, little research shows 1/8'' on a lot of track stuff.
    Last edited by hairnet; 06-27-09 at 09:11 PM.

  5. #5
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    Yeah. Hopefully the 1/8" chain will just fit on my current 3/32" chainring for now because when i save up some money i'm looking to invest in a new crankset. So getting a 1/8" chain now that works with my current situation would be optimal.

    Anyone have an answer as to whether the chain will fit on a 3/32" chainring ?

  6. #6
    No lugs? No hugs. Exit.'s Avatar
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    1/8" chains work fine on 3/32" cogs/chainrings. The opposite is not true.
    1997 Vitali track, 1986 Cilo Swiss road, 2006 KHS Flite 100, 2009 top-secret track bike.

  7. #7
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    Awesome. Would it still work fine with 1/8" cog in the rear and 3/32" chainring in the crankset ?

    I'd guess yes. But i want to make sure because i already made one stupid purchase

  8. #8
    Old fart JohnDThompson's Avatar
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    Quote Originally Posted by alexcb View Post
    Awesome. Would it still work fine with 1/8" cog in the rear and 3/32" chainring in the crankset ?

    I'd guess yes. But i want to make sure because i already made one stupid purchase
    Yup. No worries. That's how my FG is set up.

  9. #9
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    Awesome thanks a ton guys

  10. #10
    Senior Member sunburst's Avatar
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    I got surprised by the same thing with my first fixed wheelset. It came with a 1/8" cog and I had planned to use the existing chain, but had to buy a (SRAM) ss chain. I'm also running the existing 3/32" chainring on three fixies I converted.

  11. #11
    Senior Member das_pyrate's Avatar
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    1/8 is usually a bmx chain. it works fine for track stuff, but it will look super beefy compared to 3/32.
    Quote Originally Posted by bhamlax View Post
    I find small children (under 5 works best) to be exceptionally light and very easy to trick.

  12. #12
    on Baby Charlie Concept~ muckymucky's Avatar
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    get 1/8 chain. it fits all. (by all i mean excluding the exceptions)

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