Advertise on Bikeforums.net



User Tag List

Results 1 to 3 of 3
  1. #1
    Newbie
    Join Date
    Jul 2006
    Posts
    3
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Ultegra 9 double to triple - change BB?

    I am switching my double Ultegra 9 speedždouble (FC-6500) to a triple (FC-6503).

    Do I have to change the bottom bracket?

    From what I measure, the granny would not touch the frame with my current 109.5mm BB.

    Anyone tried it?

  2. #2
    Senior Member barba's Avatar
    Join Date
    Nov 2005
    Posts
    4,086
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Yes, you will need a new BB (118.5mm).

  3. #3
    Elitist Troglodyte DMF's Avatar
    Join Date
    Jun 2006
    Location
    Dallas
    My Bikes
    03 Raleigh Professional (steel)
    Posts
    6,887
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Maybe the granny won't touch, but you also have to figure derailleur travel.

    118mm BB-6500s can be had on eBay for relatively little.
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

Posting Permissions

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