Advertise on Bikeforums.net



User Tag List

Results 1 to 3 of 3
  1. #1
    Senior Member
    Join Date
    Jun 2008
    Location
    Near Sacramento
    Posts
    4,872
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Chainring Compatibility Question

    I have a late 90's issue Campy Chorus 9 equipped bike. The crank is set up with 51/39 chainrings. Is it possible to put some slightly smaller rings (like 49/37) on without switching out for a compact? If so, what sizes will work?

    Thanks in advance.
    -------

    Some sort of pithy irrelevant one-liner should go here.

  2. #2
    Mad bike riding scientist cyccommute's Avatar
    Join Date
    Nov 2004
    Location
    Denver, CO
    My Bikes
    Some silver ones, a black one, a red one, an orange one and a couple of titanium ones
    Posts
    15,457
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by JoelS View Post
    I have a late 90's issue Campy Chorus 9 equipped bike. The crank is set up with 51/39 chainrings. Is it possible to put some slightly smaller rings (like 49/37) on without switching out for a compact? If so, what sizes will work?

    Thanks in advance.
    Here's how you measure the bolt circle diameter. Measure yours and then go nuts with someone like BikeMan (they have a pretty good selection).
    Stuart Black
    Solo Without Pie. The search for pie in the Midwest.
    Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
    Days of Wineless Roads. Bed and Breakfasting along the KATY
    Twisting Down the Alley. Misadventures in tornado alley.
    An Good Ol' Fashion Appalachian Butt Whoopin'.

  3. #3
    Senior Member
    Join Date
    Jun 2008
    Location
    Near Sacramento
    Posts
    4,872
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks. Looks like I can go down to a 38. If I couple that with a 13/26, I'll be in better hill shape than I am now (12/23).
    -------

    Some sort of pithy irrelevant one-liner should go here.

Posting Permissions

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