Register now to get rid of these ads!

what should the kingpin angle be?

Discussion in 'The Hokey Ass Message Board' started by patrick english, Mar 28, 2012.

  1. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente

    ok,so im trying to save money by using what i have,but nobody makes a straight tube axle that will accept 1960 ford f100 spindles.so im going to have one made.im unsure of what the kingpin angle should be.do i use the the the same angle on my new axle as the f100?also,i dont know what that angle is.how do i figure that out?does anyone know offhand what it should be?the new axle will be a few inches narrower the the stock f100 axle..does that change anything?
     
  2. JohnEvans
    Joined: Apr 13, 2008
    Posts: 4,883

    JohnEvans
    Member
    from Phoenix AZ

    The kingpin angle needed depends on the spindle ,so use the same as the stock axle. Usually the factory manuals will give what is known as spindle included angle which is what you need to know. A good front end shop will also have the specs.
     
  3. Never2old
    Joined: Oct 14, 2010
    Posts: 696

    Never2old
    Member
    from so cal

    The same as Ford factory specs.
    You should be able to search the internet.
    (I don't "Google" as their politics differ with mine)
     
  4. Master of None
    Joined: Dec 18, 2009
    Posts: 2,279

    Master of None
    Member


  5. 1967gtafb
    Joined: Mar 22, 2012
    Posts: 41

    1967gtafb
    Member

    I always thought it was 9 degrees hugh!
     
  6. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente

    cool thanks guys.
     
  7. JohnEvans
    Joined: Apr 13, 2008
    Posts: 4,883

    JohnEvans
    Member
    from Phoenix AZ

    He is not asking for the CASTER angle.
     
  8. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente

    anyone have experience with voodoo kustomz in santa ana ca?
     
  9. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente


    now im confused...
     
  10. Master of None
    Joined: Dec 18, 2009
    Posts: 2,279

    Master of None
    Member

    Are you asking for the angle that would control the initial camber of the king pin or are you asking for the angle of caster when you mount the axle?
     
  11. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente

    the camber of kingpin
     
  12. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente

    im also guna need to know what angle to mount the axle too..i used to have a copy of the tex smith hot rod book but i gave it back to my bud..and im still new to this.anyone have any good links to how i could figure this out myself?the axle will be going under a 60 falcon.
     
  13. Master of None
    Joined: Dec 18, 2009
    Posts: 2,279

    Master of None
    Member

    If you still have the axle mounted to the truck, you should be able to use a angle gauge on the bare axle( spindle removed). Make sure you have the truck at ride height and weight. It should give you a rough idea of what it should be. Or like mentioned above go to a reputable alignment shop and see if they have a chassis manual for your truck.
     
  14. Master of None
    Joined: Dec 18, 2009
    Posts: 2,279

    Master of None
    Member

    You want 7 degrees of Caster to avoid the death wobble. P.s. you can get a magnetic angle gauge at a Menard's or Low's or home depot for arround $15 .
     
  15. 117harv
    Joined: Nov 12, 2009
    Posts: 6,590

    117harv
    Member

    I think he is refering to king pin inclination, not caster.
     
  16. F&J
    Joined: Apr 5, 2007
    Posts: 13,222

    F&J
    Member


    Why are you saying 7 degrees caster on:
    -an unknown vehicle, but perhaps "a F-100" ?
    -unknown type of steering box P/S or Std, or box ratio
    -unknown front to rear weight bias
    -unknown wheel offset (and scrub radius error)
    -unknown total weight on the front axle


    We desperately need a tech article on caster selection, the 7 degree is always thrown around like it's a mandatory setting for everything, when in realitly, it is just the halfway point in old Motors Manual caster specs for 30s/40s transverse Fords. That spec is 4.5 to 9 degrees. The mid point is 6.75
     
  17. Master of None
    Joined: Dec 18, 2009
    Posts: 2,279

    Master of None
    Member

    He mentioned a 60 Falcon, so I assumed, which is a bad thing to do, gasser. So along with this I assumed parallel leafs, set up like a Speedway kit which recommends 7 degrees , so vega box. I should ask more questions, and assume less.
     
  18. bobscogin
    Joined: Feb 8, 2007
    Posts: 1,761

    bobscogin
    Member

    Again, he's asking for kingpin inclination angle so he can have an axle fabricated. Castor is a function of axle installation. He'll need that, but not until he has an axle to install.

    Bob
     
  19. Get the camber spec's for the donor F-100.

    Put your spindle in a vice and set the flange to the correct camber angle using a digital protractor.

    Then measure the angle of the king pin and build your axle to that angle.
     
  20. Master of None
    Joined: Dec 18, 2009
    Posts: 2,279

    Master of None
    Member




    Just trying to help.:(
     
  21. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente

    you assumed correct.




     
  22. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente

    yep...so do i use the same angle on my new axle being made as the f100?also does anyone know what that angle is for sure?the truck axle&spindles came off a 1960 ford f100.



     
  23. 296 V8
    Joined: Sep 17, 2003
    Posts: 4,666

    296 V8
    BANNED
    from Nor~Cal

    Have you talked to anyone about building the axle?
    If so im suprized that he didn’t tell you to simply supply him with a spindle and kingpin.
     
  24. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente

    so far youre the only one making sense to me..thanks for the help bro.i appreciate it.right now i guess im just trying to figure out what the kingpin angle should be on the axle being made...ill figure out the other shit later when i get the axle..




     
  25. As far as i know .....
    Camber and kingpin inclination angle are not the same.
    Camber is an alignment term.
    kingpin inclination angle comes into play of the fabrication of the axle based on the spindles.
     
  26. Master of None
    Joined: Dec 18, 2009
    Posts: 2,279

    Master of None
    Member



    Your right, I just wasn't sure how to describe it with out drawing a picture.
     
  27. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente


    haha yep...bcchopit told me to send him the kingpins and a spindle and he would figure it out...but theres a guy in santa ana 1 min away from my work.shops called voodoo kustoms.i was thinking about asking him to do it for me and i just wanted to get some more info so i dont sound like a total dummy when i go in..
     
  28. 296 V8
    Joined: Sep 17, 2003
    Posts: 4,666

    296 V8
    BANNED
    from Nor~Cal

    I just know when I work on odd ball projects for people I ask for a spindle so I know I get it right.
    Relying on what the angle should be and having it built … your just asking for problems.

    I would just supply the builder with the parts and tell them were you want the camber on the finished part.
     
  29. bobscogin
    Joined: Feb 8, 2007
    Posts: 1,761

    bobscogin
    Member

    Exactly right, and the king pin bosses shouldn't just be welded on at the same angle as the kingpin inclination. That would yield zero camber. Most specs call for some positive camber. Check the alignment specs for camber, add that to the kingpin inclination measured on the spindle, and weld the bosses on at that angle.

    Bob
     
  30. simon g-s
    Joined: Mar 1, 2009
    Posts: 116

    simon g-s
    Member

    I made a straight axle for some odd ball ( non ford ) spindles. I used an original axle as a welding fixture, 2" seamless 1/4 wall tube and EN8 to machine the ends, reamer from ebay, the chrome cost 4 times the materials! Get a prof welder if your not up to it, I did.
     

    Attached Files:

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2020 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.