Advertise on Bikeforums.net



User Tag List

Results 1 to 7 of 7
  1. #1
    Senior Member billh's Avatar
    Join Date
    Nov 2004
    Location
    St Louis, MO
    Posts
    1,254
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    10 spd shifter with 9 spd gears

    this works, correct? thinking of getting a 10 spd Shimano 105 shifter with an existing Ultegra 9 spd der and cassette. just want to make sure it would work. can't think of any reason why not because the shifter just shifts the rear der one "notch" without regard to the distance shifted, correct? I just wont' have a 10th cog. So theoretically I could use a 8 spd shifter on a 9 spd system. Am I thinking about this correctly? Thanks!

  2. #2
    biked well well biked's Avatar
    Join Date
    Jul 2005
    Posts
    6,842
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    No, you're not thinking about it correctly. The center to center cog spacing of a ten speed cassette is less than a nine speed cassette, so ten speed shifters pull less cable per click than nine speed shifters. But if you're really determined to do it, check this out:
    http://www.sheldonbrown.com/gloss_aa-l.html#alternate

    I've never tried the alternate cable routing like in the link, some say it works fine, some say it's not so great. But if you're determined to use ten speed shifters with a nine speed cassette, it would be worth trying. As for the "9 speed derailleur," that's a misnomer, the derailler doesn't care if you're running nine speed or ten speed, the "speeds" are in the shifters and the cassette-

  3. #3
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,759
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Remember the shifters are by far the most expensive component so adding a 10-speed cassette and 10-speed chain will not increase your cost all that much and everything will work together properly.

  4. #4
    NE Roadie
    Join Date
    Aug 2006
    Location
    Live Free and Ride
    My Bikes
    2006 Colnago C50, 2003 DeRosa Merak, 2001 Litespeed Vortex, 2001 Lemond Buenos Aires
    Posts
    178
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by billh View Post
    this works, correct? thinking of getting a 10 spd Shimano 105 shifter with an existing Ultegra 9 spd der and cassette. just want to make sure it would work. can't think of any reason why not because the shifter just shifts the rear der one "notch" without regard to the distance shifted, correct? I just wont' have a 10th cog. So theoretically I could use a 8 spd shifter on a 9 spd system. Am I thinking about this correctly? Thanks!
    I have the same setup as you. I use this and it works great for me.

  5. #5
    Senior Member
    Join Date
    Feb 2005
    Location
    Oklahoma
    My Bikes
    Trek 5500, Colnago C-50
    Posts
    9,145
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by HillRider View Post
    Remember the shifters are by far the most expensive component so adding a 10-speed cassette and 10-speed chain will not increase your cost all that much and everything will work together properly.

    +1

    10-speed shifters, 10-speed cassette, 10-speed chain, and you're good to go.

  6. #6
    Year-round cyclist
    Join Date
    Apr 2002
    Location
    Montréal (Québec)
    Posts
    3,023
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    What "Wellbike" suggested is a free trick that work perfectly for an 8/9 speed system, and as I look at the proportions, it should work correctly for a 9/10 speed system.
    If you don't like homemade solutions and want a commercial "proven" one, install a Shiftmate.

    Basically, as Hillrider said, since the shifters are the most expensive part, it makes sense to buy the 10-speed when you need a new set of shifters. But for the rest, save your money, at least until your cassette is worn out.

    Alternatively, look for a neighbourhood cycling club and get a set of used 9-speed shifters.
    Michel Gagnon
    Montréal (Québec, Canada)

  7. #7
    Senior Member serpico7's Avatar
    Join Date
    Jul 2006
    Posts
    781
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I found Sheldon Brown's alternate cable routing to yield mediocre shifting. The Jtek shiftmate was better, but even that left something to be desired. Bottom line is that 10sp shifter can work with a 9sp cassette, but "work" is the operative term. Both solutions work, but neither is as crisp as 10 to 10 or 9 to 9 shifting.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •