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  1. #1
    Senior Member late's Avatar
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    Can you put a 9 speed cassette on a Shimano 10 speed hub?

    Hi,
    there is a hub on sale, and I could use it if it can do 9 speed.
    Thanks!

  2. #2
    me have long head tube TallRider's Avatar
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    Yes, so long as the hub isn't dura-ace.
    The Shimano 9- and 10-speed cassette standards aren't exactly the same. 10-speed cassettes have deeper grooves, basically so that the dura-ace freehub can be made of aluminum and have higher splines that won't get stripped. So the cassettes have to have deeper grooves to fit over the higher splines. This means that 10-speed cassettes will fit over any Shimano 8/9/10-speed freehub.
    I'm pretty sure that 105 and Ultegra 10-speed freehub bodies have normal (lower) splines and will accept 8- and 9-speed cassettes.

  3. #3
    Senior Member capwater's Avatar
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    Quote Originally Posted by timcupery
    Yes, so long as the hub isn't dura-ace.
    That may not hold true anymore as I have recently purchase a TT bike with Xero wheels (surely not D/A) and they only take the 10 speed splined cassettes.

  4. #4
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    Here's the full scoop:

    Dura-Ace Freehubs and wheels, and Ultegra level WHEELSETS (WH-R600 and WH-6600) Will only accept 10 speed cassettes.
    Ultegra level Freehubs (FH-6600) and all 105 Wheelsets/hubs will accept 8, 9, or 10 speed cassettes.

    Other brands you'll have to just read carefully; Typically it will say if it is '10 speed only'... Visually you can see the splines 'step down' on a 10 speed cassette for the smaller cogs....

  5. #5
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    If it's not a Shimano hub ask the seller and/or the manufacturer.

  6. #6
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    Opposite problem!

    Hi,

    I have a question concerning compatibility between Shimano 9 and 10 speed systems please:

    Old Bike: Dura-Ace 9spd downtube shifters, Ultegra 9spd hubs, Ultegra 9spd cassette, Ultegra 9spd chain, (Old!) Shimano 600 r/d - works beautifully as a 9spd.

    New Bike: Dura Ace 10spd STI shifters, Dura Ace 10spd cassette, Dura Ace 10spd chain, Bontrager wheels

    I have also bought a 105 10spd cassette that I have fitted to the wheels from the old bike so that I can use my old Ultegra hubbed wheels on the new bike for training and keep the new Bontragers nice. However, I want to keep using the old wheels with my old bike on my turbo trainer.

    Question: What will happen if I use the new 105 10spd cassette with the 9spd Ultegra drivetrain on my old bike? Will anything break or wear? Will I just suffer dodgy indexing, which I'm not bothered about as I'm quite happy to use friction shift on the turbo trainer. Or do I have to change back to the 9spd cassette every time I want to use the wheels with the old bike?

    Thanks

    Mark

  7. #7
    cab horn
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    Quote Originally Posted by Mark Fear View Post
    Question: What will happen if I use the new 105 10spd cassette with the 9spd Ultegra drivetrain on my old bike? Will anything break or wear? Will I just suffer dodgy indexing, which I'm not bothered about as I'm quite happy to use friction shift on the turbo trainer. Or do I have to change back to the 9spd cassette every time I want to use the wheels with the old bike?

    Thanks

    Mark
    Won't work.

    Chain not compatible, shifter not compatible, rear derailleur needs to be readjusted.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  8. #8
    AEO
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    10sp cassette = use 10sp chain.
    you can use a 10sp chain with 9sp cassette as well.
    the shifter in friction mode might not be too good, but since it's on a trainer, I guess it won't matter.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
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  9. #9
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    Dura Ace 7800 and 7801 have the tall spines. The 7850 hub went back to a ti body and has short splines. 7900 hubs also have short splines

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