Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    Senior Member
    Join Date
    Mar 2006
    Location
    Uxbridge, MA
    My Bikes
    Daniel Girard, Specialized Stumpjumper M2, Basso TT bike
    Posts
    245
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    converting dura-ace 8 to 9 speed

    I'd like to convert from Dura-Ace 8 speed to 9 speed, and wondering about the bare minimum number of changes.

    I understand that my venerable 8 speed deraileur has a different cable pull, and wouldn't work with a 9 speed brifter...how about my hubs? These are roughly 1992 HG era freehubs...can I put a 9 speed cassette on there? If that's the case, I would need just the cassette, RD, brifters, chain...how about the FD, will my 8 speed still work OK with the slightly narrower chain (I presume cage width is slightly different?). I read on Sheldon Brown's site that my crankset should be OK.

    Thanks!

    mark

  2. #2
    Senior Member
    Join Date
    Feb 2005
    Location
    Oklahoma
    My Bikes
    Trek 5500, Colnago C-50
    Posts
    9,012
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    You'll need new shifters, cassette, derailleurs, and chain. You may as well upgrade to 10-speed since it will require the same replacements. With a 10-speed cassette you'll need a spacer behind the cassette, these are standard equipment.

    Al

  3. #3
    Senior Member Bill Kapaun's Avatar
    Join Date
    Feb 2007
    Location
    Mid Willamette Valley, Orygun
    My Bikes
    86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
    Posts
    6,754
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    " I understand that my venerable 8 speed deraileur has a different cable pull"
    Cable pull is in the SHIFTER!
    Your current der should be fine.

  4. #4
    Team Beer Cynikal's Avatar
    Join Date
    Apr 2004
    Location
    Sacramento CA
    My Bikes
    Too Many
    Posts
    5,758
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    PM me if you want to sell your 8 speed stuff. I have a CX bike that is hungry for 8 speed parts.
    I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC

  5. #5
    Senior Member
    Join Date
    Feb 2005
    Location
    Oklahoma
    My Bikes
    Trek 5500, Colnago C-50
    Posts
    9,012
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Bill Kapaun
    " I understand that my venerable 8 speed deraileur has a different cable pull"
    Cable pull is in the SHIFTER!
    Your current der should be fine.
    Not really, pre 9-speed Dura-Ace derailleurs have a unique proprietary throw ratio, as well as a unique cable pull. 8-speed D-A derailleurs need to be mated with 8-speed D-A shifters. They are not compatible with other Shimano shifters or cassettes although they can be made to work by using a non-standard cable routing.

    Al

  6. #6
    Gone, but not forgotten Sheldon Brown's Avatar
    Join Date
    Jul 2002
    Location
    Newtonville, Massachusetts
    My Bikes
    See: http://sheldonbrown.org/bicycles
    Posts
    2,301
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by MarkSch
    I'd like to convert from Dura-Ace 8 speed to 9 speed, and wondering about the bare minimum number of changes.

    I understand that my venerable 8 speed deraileur has a different cable pull, and wouldn't work with a 9 speed brifter...how about my hubs? These are roughly 1992 HG era freehubs...can I put a 9 speed cassette on there? If that's the case, I would need just the cassette, RD, brifters, chain...
    No, you will also need new handlebar tape!

    .
    Quote Originally Posted by MarkSch
    ..how about the FD, will my 8 speed still work OK with the slightly narrower chain...
    Yes, that will be fine.

    You will see a lot of stuff about front derailer/shifter compatibility, but that's mainly a problem with triple chainring setups. Doubles are MUCH easier.

    Anybody who owns any pre-1997 Dura-Ace stuff really should read my Dura-Ace compatibility page carefully: http://sheldonbrown.com/dura-ace

    Sheldon "9-speed Handlebar Tape" Brown
    [COLOR=blue][CENTER][b]Harris Cyclery, West Newton, Massachusetts[/b]
    Phone 617-244-9772, FAX 617-244-1041
    [URL= http://harriscyclery.com] http://harriscyclery.com[/URL]
    Hard-to-find parts shipped Worldwide
    [URL=http://captainbike.com]http://captainbike.com[/URL]
    Useful articles about bicycles and cycling
    [URL=http://sheldonbrown.com]http://sheldonbrown.com[/URL] [/CENTER] [/COLOR]

Posting Permissions

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