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whats your cup size?

Discussion in 'The Hokey Ass Message Board' started by dirt, Jan 1, 2009.

  1. dirt
    Joined: Oct 26, 2005
    Posts: 907

    dirt
    Member
    from norco, CA

    i am using a 39 front end and i am not splitting the wishbone. i have seen the radius ball cup kits for 28-31 ford but i cant find anything for 39. are they the same size or do i need to hunt down used 39 cups and ball?
     
  2. SOCAL PETE
    Joined: Oct 19, 2006
    Posts: 1,204

    SOCAL PETE
    Member
    from Ramona CA

    I have a 37 cup that I am not using. I am probably not using the bones either. I can measure the ball size and let you know later this afternoon.
    Pete
     
  3. dirt
    Joined: Oct 26, 2005
    Posts: 907

    dirt
    Member
    from norco, CA

    thanks for the reply but i already have the 39 ball on my wishbone i just need to know if the 28-31 ball is the same size. the kits ive seen dont have the dimensions.
     
  4. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,682

    Bruce Lancaster
    Member Emeritus

    Ball size is same '32-40, pretty sure A is smaller, '41 up bigger.
    Cup is part of crossmember, a stamped depression. Cup cover is available in repro from Tardell, at least, rubber cover that goes on ball is available from every early Ford parts place on the planet. Model A was metal-to-metal, hence kits to replace worn out cup and adjust for worn ball. V-8's usually just need new rubber.
    If using '39 frame, all you need is rubber and if missing, the cover. If you are scratch building, 2 covers=one complete cup, and you can temporarily bolt it in place, welding the half that goes on frame when you adjust caster at full car weight.
     

  5. t-town-track-t
    Joined: Jan 11, 2006
    Posts: 884

    t-town-track-t
    Member
    from Tulsa

    Man, this is so not what I was expecting when I opened this post!
     
  6. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,682

    Bruce Lancaster
    Member Emeritus

    Well, a couple of the rubber covers will be good safety items...
     
  7. dirt
    Joined: Oct 26, 2005
    Posts: 907

    dirt
    Member
    from norco, CA


    thanks again bruce. that was my plan. i just wanted to make sure i got the right cup size.
     
  8. dirt
    Joined: Oct 26, 2005
    Posts: 907

    dirt
    Member
    from norco, CA

    just so everyone knows vern tardell does not repo or sell the cups anymore. i did manage to get two from him. one of the guys who works there, rolo, found 2 laying around.
     

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