Replacement wheelset - 7sp cassette

Discussion in 'Cycling Equipment' started by Josh Gordon, Jul 30, 2003.

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  1. Josh Gordon

    Josh Gordon Guest

    I have a Bridgestone RB-T touring bike, and it has come time to replace my wheelset. I am leaning
    towards pre-built set because I dont have a lot of $$. What I have seen so far, however, are wheels
    built for 8/9 speed cassettes.

    I have a 7 speed Shimano hyperglide cassette, with shimano deore derailler (not original equipment,
    long story) and bar end shifters. Can I put my existing casette onto the hub built for 8/9 speed
    casettes? Will it not fit properly? Will my existing derailler/shifter work with a 8/9 speed
    cassette if I choose to upgrade?

    Thanks in advance.
     
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  2. Jim Price

    Jim Price Guest

    Josh Gordon wrote:

    > I have a 7 speed Shimano hyperglide cassette, with shimano deore derailler (not original
    > equipment, long story) and bar end shifters. Can I put my existing casette onto the hub built for
    > 8/9 speed casettes?

    Yes, but ideally with a spacer which you could either buy (they're usually cheap) or bodge together
    from an old worn out cassette.

    > Will it not fit properly?

    Not without the spacer.

    > Will my existing derailler/shifter work with a 8/9 speed cassette if I choose to upgrade?

    Your existing shifter would work with an 8 speed cassette (7 and 8 speed cassette spacing is close
    enough for this to work well), but you would of course be unable to use one of the gears. You may
    find you need to spread the chainstays a few mm to make things fit nicely - easy on a steel frame if
    you are careful.

    It would not work properly with a 9 speed cassette.

    --
    Jim Price

    http://www.jimprice.dsl.pipex.com

    Conscientious objection is hard work in an economic war.
     
  3. Paul Kopit

    Paul Kopit Guest

    On Wed, 30 Jul 2003 14:33:31 -0400, "Josh Gordon" <[email protected]> wrote:

    >I have a 7 speed Shimano hyperglide cassette, with shimano deore derailler (not original equipment,
    >long story) and bar end shifters. Can I put my existing casette onto the hub built for 8/9 speed
    >casettes? Will it not fit properly? Will my existing derailler/shifter work with a 8/9 speed
    >cassette if I choose to upgrade?

    You need to put on a 4.5 mm spacer before the 7sp cassette. If you can't find one, at your local
    shop, I'll sell you one.

    Your barends will likely shift an 8sp cassette, especially if you buy a 105 cassette and use the
    spacers out of your 7sp cassette. If you friction shift, you can put a 9sp cassette on as well.
     
  4. Josh Gordon

    Josh Gordon Guest

    "Paul Kopit" <[email protected]> wrote in message
    news:[email protected]...
    > On Wed, 30 Jul 2003 14:33:31 -0400, "Josh Gordon" <[email protected]> wrote:
    >
    > >I have a 7 speed Shimano hyperglide cassette, with shimano deore
    derailler
    > >(not original equipment, long story) and bar end shifters. Can I put my existing casette onto the
    > >hub built for 8/9 speed casettes? Will it not
    fit
    > >properly? Will my existing derailler/shifter work with a 8/9 speed
    cassette
    > >if I choose to upgrade?
    >
    > You need to put on a 4.5 mm spacer before the 7sp cassette. If you can't find one, at your local
    > shop, I'll sell you one.
    >
    > Your barends will likely shift an 8sp cassette, especially if you buy a 105 cassette and use the
    > spacers out of your 7sp cassette. If you friction shift, you can put a 9sp cassette on as well.

    Thanks for the advice! One more quick question: should the Deore derailler work on an 8sp?

    Thanks,

    Josh
     
  5. joshie-<< I have a Bridgestone RB-T touring bike, and it has come time to replace my wheelset. I am
    leaning towards pre-built set because I dont have a lot of $$. What I have seen so far, however, are
    wheels built for 8/9 speed cassettes. >><BR><BR>

    Are your hubs in good shape? If so, find a good wheelbuilder that can deisgn a wheelset, around your
    hubs, built specifically for you...

    Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
    (303)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene"
     
  6. Yes. your Deore derialler shoukld work. Wtih Shimano, the spacing is in the shifter, not
    the derailer.

    May you have the wind at your back. And a really low gear for the hills! Chris

    Chris'Z Corner "The Website for the Common Bicyclist": http://www.geocities.com/czcorner
     
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