Advertise on Bikeforums.net



User Tag List

Results 1 to 3 of 3
  1. #1
    Member
    Join Date
    Sep 2006
    Posts
    29
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Specialized Crankset

    I just bought a used tandem and need to get pedals for it. Does anyone know the threads on Specialized crankset?

    Thanks..

  2. #2
    Senior Member
    Join Date
    Aug 2005
    Location
    New Jersey
    My Bikes
    Colnago C40 HP, Aegis Trident, Cannondale tandem
    Posts
    491
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    pedal threads are pretty much universal.

  3. #3
    Senior Member
    Join Date
    Oct 2005
    Posts
    1,735
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    +1 on the pretty much standard. Unlikely you have French threading or that crankset is a one piece. You'll just have to decide what pedals you want to put on it. If you are itching to get out on the bike you can swap pedals from other bikes onto the arms. From Sheldon's website:

    Thread Sizes
    - Most pedals have 9/16" x 20 tpi threads.
    - Pedals for one-piece cranks are 1/2" x 20 tpi.
    - Older French bicycles used a 14 mm x 1.25 mm thread, but these are quite rare.

    In the early 1980s, Shimano attempted to popularize a very large thread size, which they called "Dyna Drive." This system was designed to place the pedal bearing inside of the crank, so that the foot could be slightly below the pivot point of the pedal bearing. This was believed to offer biomechanical advantages, but the system was not a commercial success, and has been abandoned.

    Pedal Threading
    Standard-3-piece cranks 9/16" (0.56") x 20 tpi 14.28 x 1.27 mm
    One-piece (American) Cranks 1/2" (0.50") x 20 tpi 12.7 x 1.27 mm
    Old French 14 mm x 1.25 mm 0.55" 20.32 tpi

Posting Permissions

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