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  1. #1

    10 speed compatability

    can you use a 9 speed crank with a 10 speed chain and casette.

    Can you use a 9 speed R mech with a 10 speed chain?

    can you use a 10 speed crank with 9 speed system.

    looking to change my crank and do not know if i can upgrade to 10 speed crank but keep the rest as 9 speed for now.

    why would a 9 speed r mech not work, spread must be the same, or is it just an issue with the jockey wheels and the width of the chain?

  2. #2
    Senior Member Dalesman 's Avatar
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    Logical

  3. #3
    didn't make that much sense to me, yes the chains are different widths, so i do not see why a nine speed hain that is slighlty wider whould not work on the cranks.
    anyone any experiance of this ?

  4. #4
    Senior Member Mister Bump's Avatar
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    Quote Originally Posted by serge the seal of death View Post
    can you use a 9 speed crank with a 10 speed chain and casette.

    Can you use a 9 speed R mech with a 10 speed chain?

    can you use a 10 speed crank with 9 speed system.

    looking to change my crank and do not know if i can upgrade to 10 speed crank but keep the rest as 9 speed for now.

    why would a 9 speed r mech not work, spread must be the same, or is it just an issue with the jockey wheels and the width of the chain?
    YES
    YES
    YES

    The rings on a 10 speed are slightly closer together so if you are using a 9 speed chain you may get some rub of the chain on the adjacent rings when in extreme gears. Other than that it works fine.

    A 9 speed rear mech won't work on a 10 speed system because the cable pull is different between 9 and 10 speed.

  5. #5
    but is the cable pull not done by the shifter.

  6. #6
    Senior Member Mister Bump's Avatar
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    It is not as simple as the amount of cable each click on the shifter moves. The distance the mech moves per mm of cable pull also changes. So no, 9 speed and 10 speed don't mix properly. Trust me.

  7. #7
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    I'm running an 8sp Sora Shifter on a 10sp 105 Mech it's a bodge but it changes gears!

  8. #8
    Senior Member Mister Bump's Avatar
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    That is road stuff though BHB. You can mix 8,9 and 10 in road because the cable pull ratio is all the same.

  9. #9
    well thankyou mr bump for a very good answer

  10. #10
    Senior Member Mister Bump's Avatar
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    No problem, it is what I am paid for

  11. #11
    Senior Member Neil Helks's Avatar
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    You are quite right Mr B but at work we put a 9spd Shimano casette on a 10 speed Shimano MTB drivetrain and shifters and it indexed fine much to our surprise .

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