Advertise on Bikeforums.net



User Tag List

Results 1 to 3 of 3
  1. #1
    Newbie
    Join Date
    Mar 2005
    Posts
    1
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Need spoke lengths

    Hi. I am in the process of building my first wheel with a shimano nexus 7 speed internal hub. I have a 26 inch rim, and need to know what length spokes I need to build it. The model number for this hub was cj-7s40. Apparently, the hub diameter of spoke holes was 99mm. If you can tell me, I would be very happy. BTW, what is a good price for one of these in the box?? i paid $100. Actually it was birthday money so I didn't feel it.
    Thanks, Alan

  2. #2
    NOT a weight weenie Hunter's Avatar
    Join Date
    Dec 2000
    Posts
    1,762
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    There are a few measurements of the rim you need and a few more of the hub to get a accurate spoke length measurement. This is a good site to figure what you need.
    http://www.bikeschool.com/spokes/

  3. #3
    Si Senior dbg's Avatar
    Join Date
    Nov 2004
    Location
    Naperville, Illinois
    My Bikes
    Too Numerous (not)
    Posts
    2,334
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Sheldon Brown has references to several spoke length calculators (and other good wheelbuilding info).

    http://sheldonbrown.com/wheelbuild.html#length

    I've used many of them with no problems and got accurate results. The first one on the list has a database of rims and hubs including the nexus 7 spd. I've built several nexus 7's using data from that exact spreadsheet spoke calculator. (The first wheel I ever built was measured by a LBS who proceeded to sell me the wrong spokes at a rip off price. Measure or calculate it yourself if you want to be sure it's right and to learn the techniques)

Posting Permissions

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