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Hot Rods Model a dropped axle has too much camber

Discussion in 'The Hokey Ass Message Board' started by flying53gmc, Jul 17, 2026.

  1. flying53gmc
    Joined: Mar 2, 2005
    Posts: 427

    flying53gmc
    Member
    from M-boro, TN

    I bought a roadster a couple years ago that has been in the corner while I collected parts. It had a cheap Chinese dropped axle under it and I had bought an original dropped an axle to put under it. I put it in and it looks to have too much camber. Do I have mis matched spindles to this axle? Was it dropped wrong? Did I ***emble something wrong? IMG_9956.jpeg IMG_9955.jpeg IMG_9960.jpeg IMG_9958.jpeg IMG_9957.jpeg IMG_9959.jpeg
     
    Deutscher and Just Gary like this.
  2. Ned Ludd
    Joined: May 15, 2009
    Posts: 5,742

    Ned Ludd
    Member

    Might the kingpin inclination have been altered to work with different spindles when the axle was dropped? E.g. '49-'54 Chevy spindles have a much smaller KPI angle, so if the axle was set up for those and you put Ford spindles on it, you'd get about the camber you've got.
     
    hotrodjack33 likes this.
  3. philosofriend
    Joined: Dec 13, 2025
    Posts: 10

    philosofriend

    There is probably a shop not too far from you that does big truck frame repairs. They would have the tools and experience to adjust that axle.
     
    pprather likes this.
  4. flying53gmc
    Joined: Mar 2, 2005
    Posts: 427

    flying53gmc
    Member
    from M-boro, TN

    I have a bunch of 49-51 Chevy cars and parts cars. What is the simplest fix if that’s correct? Changing to Chevy spindles might open another can of worms. Can this axle be tweaked enough to get the camber right?
     
    Ned Ludd likes this.
  5. 26 T Ford RPU
    Joined: Jun 9, 2012
    Posts: 12,951

    26 T Ford RPU
    ALLIANCE MEMBER

    You need to check the scrub point, where the king pin centre line intersects the ground should be in the centre of the tire contact patch. It doesn't look that bad really. The angles all have to work together.
    My RPU looks very similar (both sides are the same) , the axle is so cal speed shop forged item with 48 spindles. JW
    [​IMG]
     
    Last edited: Jul 18, 2026
    hotrodjack33 likes this.
  6. BJR
    Joined: Mar 11, 2005
    Posts: 12,064

    BJR
    Member

    Stupid question by me, could they be on upside down?
     
    26 T Ford RPU likes this.
  7. 26 T Ford RPU
    Joined: Jun 9, 2012
    Posts: 12,951

    26 T Ford RPU
    ALLIANCE MEMBER

    That would produce less camber. JW
     
  8. hotrodA
    Joined: Sep 12, 2002
    Posts: 7,789

    hotrodA
    ALLIANCE MEMBER

    Hi Neighbor!
    That is a pretty easy camber correction for any truck alignment shop with the right tooling,
    and experienced tech.
    Both Hunter and Beeline supply the kits, if the shop bought it with their rack.
    When I did that work, we took most of the positive camber out, leaving zero on the right,
    1/2* + on the left..
     
    302GMC, 26 T Ford RPU and lostone like this.
  9. Clydesdale
    Joined: Jun 22, 2021
    Posts: 659

    Clydesdale
    Member

    Just a bit pick but an important detail before you speak to a shop about fixing it.

    You have too much POSITIVE camber, camber should be relayed in terms of positive (top of the wheel out) and negative (top of the wheel in)
     
  10. krylon32
    Joined: Jan 29, 2006
    Posts: 11,752

    krylon32
    ALLIANCE MEMBER
    from Nebraska

    There is an axle dropper that has a history of excess camber drops. I've had a couple, corrected that in a press.
     
  11. With a bit of enginuity, tools and determination it can be fixed at home. I set this up to correct the issue on the dropped Ford axle in the '38 cabriolet.

    20190306_145311.jpg
     
  12. lostone
    Joined: Oct 13, 2013
    Posts: 3,896

    lostone
    Member
    from kansas

    Yep find a good truck shop that has knowledgeable people and that would be a easy fix.

    ...
     
    winduptoy likes this.
  13. Yep, those things bend. Just need the right tool.
     
  14. leon bee
    Joined: Mar 15, 2017
    Posts: 1,674

    leon bee
    Member

    At what point on the axle would force be applied? Would you try to bend right where it was stretched?
     
  15. hotrodA
    Joined: Sep 12, 2002
    Posts: 7,789

    hotrodA
    ALLIANCE MEMBER

    No. If it’s 3.7* + on both sides, you would hold it down in the center, or between the spring perches equal distance.. A single hold down in the center may give it too much of a sharp bend,to be esthetically pleasing.
    That would be the fastest and cheapest in a shop, and take less push force.

    It COULD be corrected where it’s bent with the hold down between the perch and the bend, but it would be hard to push up the end. That might be better done in a press.
    @anothercarguy has it right with his hold down and pushing up on the bare axle end.
    Great setup!
     
    anothercarguy, leon bee and Budget36 like this.
  16. Relic Stew
    Joined: Apr 17, 2005
    Posts: 1,257

    Relic Stew
    Member
    from Wisconsin

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