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  1. #1
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    9 speed chainrings with 10 speed chain??????

    I have a bike with a 2x10 drivetrain; however, I noticed that the chain rings are "9 speed" chain rings.

    Does this matter?

    I realize the 10 speed chain is a bit narrower. Will the 9 speed chain rings be too wide / cause excessive wear or lack of smoothness?

    Or does it not really matter all that much?

    Crankset is a Race Face SiXC...


    thanks
    Matt

  2. #2
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    what is your cassette and derailleur?

  3. #3
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    SRAM XO 10 speed for everything else except for the crankset/chainrings.

    Matt

  4. #4
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    I'm running a 9sp crank, chain rings and FD w/ 10sp chain and cassette (all Shimano) and it works fine so far.

  5. #5
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    Quote Originally Posted by bowler1 View Post
    SRAM XO 10 speed for everything else except for the crankset/chainrings.

    Matt
    Your rear DR will prolly need a 10 spd chain... I ran a 9spd XO and cassette and a S1400 2x10 up front... Used a 9 spd KMC chain.. Worked ok, but wouldve worked better with 9 spd chain rings up front. I would get 10spd chain rings if possible and a 10 spd chain.. When everything is in sync, it just runs smoother and shifts better.

  6. #6
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    I run my 10 speed road bike with a 9 speed XT 44/32/22 crank when touring as it gives a better ratio than the 105 road crank. It shifts just as well as the 10 speed crank with a 10 speed chain and causes no noticeable additional wear. The internal chain plate spacing is exactly the same for 9 and 10 - it's only the plates are thinner, so the ring spacing is slightly narrower on the 10 speed crank.
    I really don't think you have anything to worry about, I would stick with the 10 speed chain though, you may get chain rub issues if the FD is a 10 speed and the wider 9 speed chain may start riding up the ridges on a 10 speed cassette.

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