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Re: [Land-speed] TOE IN

To: Skip Higginbotham <saltrat@pahrump.com>
Subject: Re: [Land-speed] TOE IN
From: drmayf <drmayf@mayfco.com>
Date: Tue, 10 Jul 2007 10:55:00 -0700
Yup, in a car like yours caster is a booger because the suspension is 
rigid. As the wheels turn one tries to lift and the other lower all at 
the same time. Add to that the turn radius described by the tilt of the 
wheel caused by the caster and it gets complicated quickly.  As to 
drawing straight lines... you use a plumb bob on the center of the front 
of the car and drop a point on the floor. Ditto rear. Snap a chalk line 
between them. Draw a perpendicular line at the centerline of the rear 
axle. Now you got a really big diagram to work form and the accuracy 
goes up. And you didn't have to cut down a tree to make paper....

Still as you say, this ain't no autocross car, lol...  Still you don't 
want those front tires to wear out turning out...

mayf, in from cutting the front grass...finally cool enough that heat 
stroke is not much of a problem..

Rear grass this evening..

 
Skip Higginbotham wrote:

>
> Mayf
> It is the caster complication that my little brain couldn't get past. 
> So I made the steering arms the same length so there should be no 
> Ackerman effect. Shouldn't be needed for a car that runs straight......
> I DO know that weight on wheels (steering) is very critical to the 
> directional stability of my car. It is not on a conventional 4 
> cornered setup.
> I agree with the rest of your proposed method as well. Hard to draw 
> straight lines through the frame tho....(-:(-:
> Skip
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