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How do I build some negative caster into this?

Discussion in 'The Hokey Ass Message Board' started by Lucky77, Jul 23, 2012.

  1. Russco
    Joined: Nov 27, 2005
    Posts: 4,176

    from Central IL

    If you are going to have any amount of rake in the chassis and use the model A bones, you will definately need to pie cut them to achieve 6-8* of castor unless you want your mounts way down below the frame rail.
  2. Don's Hot Rods
    Joined: Oct 7, 2005
    Posts: 8,319

    Don's Hot Rods
    from florida

    Pasadenahotrod is correct, the Model A bones are weak compared to the later ones and the way you cut that hole through the middle made them even weaker. I know people use the A bones, but if you take into consideration that age has shrunk down the thickness and strength of the metal already, now you are putting more stress on them, it isn't a good combination.

  3. hillbilly4008
    Joined: Feb 13, 2009
    Posts: 2,917

    from Rome NY

    Damn it all. This makes no sense!!!!:eek:
  4. CutawayAl
    Joined: Aug 3, 2009
    Posts: 2,144

    from MI

    As others have already mentioned, you don't want negative caster.
  5. Halfdozen
    Joined: Mar 8, 2008
    Posts: 620


    Before you go making a lot of changes, set the chassis up at final ride height front and rear on a level floor, then check the kingpin angle at the kingpin, not in the centre of the axle. The axle could be twisted, flanges may not be the same width.
  6. A Rodder
    Joined: Jul 13, 2008
    Posts: 2,477

    A Rodder

    How bout an update lucky?
  7. 4-pot
    Joined: Aug 12, 2005
    Posts: 181


    Scott I have a pair of 38 bones I'm not going to use , you can have them if you want. Larry
  8. Mt Kiyotee
    Joined: Mar 7, 2019
    Posts: 18

    Mt Kiyotee

    This is really good info on kingpin caster WITH the rack taken into account. Thanks guys

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