Cycling Equipment · Public discussion

Ten on Seven

Started by Sheldon Brown · · Last activity · 5 posts · 616 views

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Cycling Equipment
Published
27 May 2004
Last activity
28 May 2004
Original author
Sheldon Brown
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  1. My colleague Jay Jackson just showed me something interesting:

    The new Dura-Ace 12-27 cassettes come with a 1 mm spacer
    that is supposed to be used when they're installed on a
    9-speed hub. (The bottom end is slightly recessed into
    the spider.)

    Jay tried installing one of these cassettes without the
    spacer on a
    N.O.S. 7-speed 105 hub we have in stock. He found that, by
    substituting a "compact type" lockring, he was able
    to successfully mount the 10-speed cassette on the
    7-speed hub!

    We haven't tried this on an actual bicycle yet, and it looks
    as if chain clearance may be a wee bit skimpy on both sides,
    but it looks as if this could be made to work in som
    applications...so there's hope for folks with non-ferrous
    126 mm frames!

    Sheldon "Take A Deep Breath" Brown +-----------------------------------------------
    +
    | The difference between truth and fiction: | Fiction has
    | to make sense. | --Mark Twain. |
    +-----------------------------------------------+ Harris
    Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX
    617-244-1041 harriscyclery.comharriscyclery.com Hard-to-find parts
    shipped Worldwide captainbike.comcaptainbike.com
    sheldonbrown.comsheldonbrown.com

  2. Sheldon Brown <[email hidden]> wrote in message news:<[email hidden]>...

    Quoted message said:

    My colleague Jay Jackson just showed me something
    interesting:

    The new Dura-Ace 12-27 cassettes come with a 1 mm spacer
    that is supposed to be used when they're installed on a
    9-speed hub. (The bottom end is slightly recessed into the
    spider.)

    Jay tried installing one of these cassettes without the
    spacer on a
    N.O.S. 7-speed 105 hub we have in stock. He found that, by
    substituting a "compact type" lockring, he was able
    to successfully mount the 10-speed cassette on the
    7-speed hub!

    We haven't tried this on an actual bicycle yet, and it
    looks as if chain clearance may be a wee bit skimpy on
    both sides, but it looks as if this could be made to work
    in som applications...so there's hope for folks with non-
    ferrous 126 mm frames!


    Well my fingers are crossed!

    As an owner of a 979 Vitus this would be very good news..
    it would also keep me from wondering about re-spaceing the
    753 Bike...

  3. On 28 May 2004 05:25:46 -0700, [email hidden] (ajames54)

    Quoted message said:

    As an owner of a 979 Vitus this would be very good news..
    it would also keep me from wondering about re-spaceing the
    753 Bike...

    My vitus 980 takes a 9-speed wheel easily; on a good day it
    drops right in, and on a terrible day I must put a slight
    amount of pressure on the dropouts.
    --
    Rick Onanian

  4. Quoted message said:

    My vitus 980 takes a 9-speed wheel easily; on a good day
    it drops right in, and on a terrible day I must put a
    slight amount of pressure on the dropouts.
    --
    Rick Onanian

    My Trek 2000/1500 has no difficulty with a DuraAce 8/9 hub.
    I lamented its inability to evolve for a couple of years and
    then decided to try a wheel from another bike and it went in
    with no real difficulty and has been working well for two
    years. It started life with a 6 speed freewheel and is now 8
    speed Ultegra. Some day it will inherit a faltering 9 speed.
    Bill Brannon

  5. Bill said:
    Quoted message said:


    My vitus 980 takes a 9-speed wheel easily; on a good day
    it drops right in, and on a terrible day I must put a
    slight amount of pressure on the dropouts.
    --
    Rick Onanian

    My Trek 2000/1500 has no difficulty with a DuraAce 8/9 hub.
    I lamented its inability to evolve for a couple of years
    and then decided to try a wheel from another bike and it
    went in with no real difficulty and has been working well
    for two years. It started life with a 6 speed freewheel and
    is now 8 speed Ultegra. Some day it will inherit a
    faltering 9 speed.

    My 1989 Trek 1400 (bonded aluminum), originally equipped
    with a 105 7-speed hub, has been riding around with an
    8-speed hub for almost four years now. I've been riding
    it often lately. It takes a little outward pressure to
    snap in the rear wheel, but other than that there have
    been no problems.

    After riding my Vitus 992 for a number of years I measured
    the rear dropout spacing with the hub removed. It's 128mm.
    The Vitus has apparently never cared that it's been holding
    a 130mm hub. It's my primary bike and is now 12 years old.

    jeverett3<AT>earthlink<DOT>net
    home.earthlink.net~jeverett3

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