Advertise on Bikeforums.net



User Tag List

Results 1 to 2 of 2
  1. #1
    Mad For Marinoni !!! Captain Crunch's Avatar
    Join Date
    Aug 2001
    Location
    Matheson, Ontario, Canada
    Posts
    438
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Octalink vs. Isis Drive

    What 's the difference between these two BB's and what are the benefits of each if any over the other? I cannot seem to find much info on either anywhere.

    Thanks
    One does not cease to play because one grows old.
    One grows old because one ceases to play.

  2. #2
    DEADBEEF khuon's Avatar
    Join Date
    Aug 2002
    Location
    Catching his breath alongside a road near Seattle, WA USA
    My Bikes
    1999 K2 OzM, 2001 Aegis Aro Svelte
    Posts
    12,155
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'm not sure what the exact differences are between ISIS and Octalink but the differences between ISIS and Shimano splined XT/LX and Shimano splined XTR (note that XT/LX and XTR are also different from each other I believe... XT/LX might be Octalink) is that ISIS uses 10 splines that are set deeper along the spindle than Shimano's 8-spline design which don't run as far along the spindle. There are also differences in the width and curvature-depth (ISIS grooves are deeper but narrower) of the splines too as well as the thickness of the spindle. I'm not certain if there's a diameter difference however it's more than likely there is.

    The ISIS Drive webpage has all the specs of course but I don't know of a webpage that details Shimano's spline specs of which there are many versions.

    Sheldon Brown's webpage about BB sizes details more important fitting information such as chainline positions and spindle-lengths.
    1999 K2 OzM 2001 Aegis Aro Svelte OCP Club Member
    "Be liberal in what you accept, and conservative in what you send." -- Jon Postel, RFC1122

Posting Permissions

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