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  1. #1
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    10 speed cassette on 9 speed system

    so my primary bike is out of commission, and my backup bike currently doesn't have any wheels...

    so i was wondering, if i put my wheels with the 105 cassette on the backup bike with tiagra shifters, will anything bad come of this (assuming i'm using the outer 9 cogs)?
    Quote Originally Posted by hao View Post
    Yes yes. Next time when I post about how I was riding in Belgium and was complimented by Fabian Cancellara and was invited to Saxo-Bank, you'll all know that by Belgium I mean Bumtown KY, by Fabian Cancellara I mean a creepy old dude, and by Saxo-Bank I mean his house. And knowing all that, you'll still whole-heartedly congratulate me on my extraordinary achievement.

  2. #2
    headtube. zzyzx_xyzzy's Avatar
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    The 9 speed shifter moves the derailleur 11% more with each click than a 10 speed does. So it won't line up with a 10 speed cassette.

  3. #3
    cab horn
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    Quote Originally Posted by zzyzx_xyzzy View Post
    The 9 speed shifter moves the derailleur 11% more with each click than a 10 speed does. So it won't line up with a 10 speed cassette.
    Won't work anyways. It'll be a 9s chain on a 10 cog set.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  4. #4
    Senior Member Steev's Avatar
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    You could swap the cassette as well.

  5. #5
    Senior Member DieselDan's Avatar
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    Quote Originally Posted by Steev View Post
    You could swap the cassette as well.
    and the chain.
    Bikes use brakes to stop.

    If your bike has breaks, don't ride it.

  6. #6
    Older than dirt CCrew's Avatar
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    But you still have the 9 speed shifters. I'm reading that he doesn't have wheels or possibly cassette for the backup bike which is 9 speed. In which case moving his 10 speed chain, cassette and wheels to the 9 speed bike gets him nothing that works.

    Now that said, you all are 100% correct IF he has the 9 speed cassette and chain that were originally on the backup bike. Then he can swap cassettes and be down the road.

  7. #7
    cab horn
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    Quote Originally Posted by Steev View Post
    You could swap the cassette as well.
    He doesn't have wheels to swap them from.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  8. #8
    cab horn
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    Quote Originally Posted by CCrew View Post
    But you still have the 9 speed shifters. I'm reading that he doesn't have wheels or possibly cassette for the backup bike which is 9 speed. In which case moving his 10 speed chain, cassette and wheels to the 9 speed bike gets him nothing that works.

    Now that said, you all are 100% correct IF he has the 9 speed cassette and chain that were originally on the backup bike. Then he can swap cassettes and be down the road.
    You could probably get it to maybe shift into a couple of gears. You can definitley get it to be a singlespeed or at the very least whatever the amount of chainrings he has up in the front.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  9. #9
    Low car diet JiveTurkey's Avatar
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    To sum up what others have said: the speed of the cassette, chain, and rear shifter need to match. (Edit: on second thought, the chain can actually be a higher-speed.)
    Last edited by JiveTurkey; 11-21-09 at 10:17 PM.
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  10. #10
    Have bike, will travel Barrettscv's Avatar
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    Buy a rear wheel & 9 speed cassette for the back-up bike.

    The back-up bike should be operational after all.

    Michael

  11. #11
    cab horn
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    Quote Originally Posted by Barrettscv View Post
    Buy a rear wheel & 9 speed cassette for the back-up bike.

    The back-up bike should be operational after all.

    Michael
    After re-reading post #1, i'm under the impression he doesn't have a front or a rear.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  12. #12
    Older than dirt CCrew's Avatar
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    Quote Originally Posted by operator View Post
    You could probably get it to maybe shift into a couple of gears. You can definitley get it to be a singlespeed or at the very least whatever the amount of chainrings he has up in the front.
    Hardly an "as designed" situation, and I'm sure not what the OP is looking for. Hence I'll stick to my "nothing that works" and clarify it with "properly" - thanks.

  13. #13
    cab horn
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    Quote Originally Posted by CCrew View Post
    Hardly an "as designed" situation, and I'm sure not what the OP is looking for. Hence I'll stick to my "nothing that works" and clarify it with "properly" - thanks.
    That wasn't an attack on your post, chill.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  14. #14
    Have bike, will travel Barrettscv's Avatar
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    Quote Originally Posted by operator View Post
    After re-reading post #1, i'm under the impression he doesn't have a front or a rear.
    He could simply use the front from the other bike.

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