1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

‘72 Fork Slider Threads?

Discussion in 'Norton Commando Motorcycles (Classic)' started by Combat_Kid, Dec 12, 2018.

  1. Combat_Kid

    Combat_Kid

    Joined:
    Feb 26, 2015
    I’m appealing to the vast knowledge base of the forum: anyone know what the thread is for the fork slider top cap? I’ve got a slider with buggered threads that I was hoping to chase and clean up. Trying not to spend $200-$300 on a new one if I can help it.
     
  2. kommando

    kommando

    Joined:
    May 7, 2005
    I got it to be 20 TPI so cycle thread, at an OD of 1.93" so possibly 1 15/16". A 1/4 UNC tap could be used to chase the thread held in the hand or a thread file with 20 TPI.
     
  3. Combat_Kid

    Combat_Kid

    Joined:
    Feb 26, 2015
    I heard back from Simon at AN, who confirmed that it is 1.15/16” UNF 20 tpi
     
  4. kommando

    kommando

    Joined:
    May 7, 2005
    Cycle vs UNF are both 60 degree angle so doubt the factory changed tooling when it changed from cycle to UNF, an easy one for them to tick off in the changeover from cycle to UNF/UNC.
     
  5. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
  6. 84ok

    84ok

    Joined:
    Aug 10, 2014
    i'm still trying to figure out 'fork slider top cap' ..

    sounds like there is a tap for it tho..

    [​IMG]
     
    Last edited: Dec 14, 2018
  7. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
  8. 84ok

    84ok

    Joined:
    Aug 10, 2014
  9. N0rt0nelectr@

    N0rt0nelectr@ VIP MEMBER

    Joined:
    Sep 15, 2014
    Could you use an old top slider collar cut a couple of slots in it and use it for a tap?
    John in Texas
     
  10. baz

    baz VIP MEMBER

    Joined:
    May 26, 2010
    That's exactly what I have done in the past
     
  11. Combat_Kid

    Combat_Kid

    Joined:
    Feb 26, 2015
    Interesting idea. I’ll have to look into this as an option.
     

Share This Page