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  1. #1
    Senior Member Wheels4's Avatar
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    ok, i did a search... and learned alot about chain sizes. the only thing i couldn't find was whether or not my 9 speed chain and rear cogset will match up to a 1/8 chainring up front. I really don't have a clue as to what size my chain is(assuming it's a 3/32 chain)... I'm just wondering if it will fit to this specific S/S crankset. I'm trying to go cheap here.... and this crankset is within my budget.


    thanks for any help.
    all-around: 09 Trek 7.3 FX
    roadie: 09 Scott S60

  2. #2
    Obeying Gravity
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    Good question. My immediate reaction was no. But then i went to the garage and grabbed a 1/8 chainring and put my 8spd chain on it and it fit.....

    I'm torn.

  3. #3
    Sweetened with Splenda
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    It might fit - sort of - but it's not going to engage right; chain won't sit down far enough over the teeth. At least in my experience.
    Falling down is not exercising.

  4. #4
    Gone, but not forgotten Sheldon Brown's Avatar
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    Quote Originally Posted by Wheels4
    ok, i did a search... and learned alot about chain sizes. the only thing i couldn't find was whether or not my 9 speed chain and rear cogset will match up to a 1/8 chainring up front. I really don't have a clue as to what size my chain is(assuming it's a 3/32 chain)... I'm just wondering if it will fit to this specific S/S crankset. I'm trying to go cheap here.... and this crankset is within my budget.
    Definitely not. No way will a 3/32" chain work on a 1/8" chainring (unless you spend a LOT of time with a file, as I did when I was a teenager...)


    Quote Originally Posted by MattP
    Good question. My immediate reaction was no. But then i went to the garage and grabbed a 1/8 chainring and put my 8spd chain on it and it fit.....
    You may have thought that was a 1/8" chainring, but it wasn't. It's not unusual these days for bikes supplied with 1/8" chain to have 3/32" chainrings...they have the great advantage of working with both sizes of chain.

    Sheldon "No Way" Brown

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  5. #5
    Senior Member grolby's Avatar
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    Quote Originally Posted by Sheldon Brown
    Definitely not. No way will a 3/32" chain work on a 1/8" chainring (unless you spend a LOT of time with a file, as I did when I was a teenager...)
    I get the distinct impression that you had way too much free time as a teenager! Or maybe just enough.

    Anyway, I tried a 3/32" chain on a 1/8" cog in the midst of my most recent bike project (three-speed wheel on a ten-speed frame), because I was cheap and wanted to see if I could get away without buying a new cog. No workie. Not even close. So I had to buy the cog, which turned out to be four bucks. Go figure, right?
    The Workingman's Honest Bicycle Program - Heady talk about bikes, bike racing, bike racers and bike riding. standarddouble.com/whbp

  6. #6
    Senior Member Wheels4's Avatar
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    Quote Originally Posted by Sheldon Brown
    Definitely not. No way will a 3/32" chain work on a 1/8" chainring (unless you spend a LOT of time with a file, as I did when I was a teenager...)




    You may have thought that was a 1/8" chainring, but it wasn't. It's not unusual these days for bikes supplied with 1/8" chain to have 3/32" chainrings...they have the great advantage of working with both sizes of chain.

    Sheldon "No Way" Brown

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    Sheldon,

    I was alittle confused with one of your articles(on your website).... on the single speed/fixed section... it says that you can run a 9/10 speed chain on your 7/8 sp cogset. then i searched on this forum.... and saw different opinions. thanks for setting me straight. oh, and I could have read it wrong... if I did, my bad.

    oh, and grolby... I wish I could find a chainring w/38t for 4 bucks. that would be nice.


    thanks again everyone,
    Rich
    all-around: 09 Trek 7.3 FX
    roadie: 09 Scott S60

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