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POPULAR MECHANICS MAY 1973:
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If too little caster exists, the car will wander and weave,
thus necessitating constant corrections in steering.
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BTW I find it immensely helpful saving threads to subscribe to those of high interest--from there they're kept in your User Control Panel under "Subscribed Threads". You can elect to receive notifications when a new post is added or not receive notifications----they're still listed in that file on your CP.
Calvin, I would consider looking into what Harvard mentioned. I recently added the Ingalls offset castor/camber bushings, and they made the van steering very stable. Also, the Ingalls bushings are now sold by Moog. I couldn't find them anywhere and settled on what I thought was a Moog product. When I got them, the Ingalls were inside.
Changing the fore aft angle of the chassis will effect the run time +caster.
If the change results in a more nose down angle it will reduce the runtime +caster.
If the change results in a more nose up angle it will increase the runtime +caster.
The more +caster then the better the stability at highway speeds.
So goes the theory.
The more +caster then the better the stability at highway speeds.
So goes the theory.
That's true but only up to a point---from what I've read online (take that FWIW) and talking with local knowledgeable alignment tech's anything over +5 Caster isn't good for tire wear etc. Of course Ford doesn't help with the caster specs ranging from +1 > +7 degrees.