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Old 09-10-2008, 05:52 PM
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PaulProe PaulProe is offline
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Join Date: May 2006
Location: Manchester, MO
Cobra Make, Engine: Hurricane - FE
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Default More Info/Help

Thanks for your help and support, guys.

It appears I have two different avenues.

1) Lowering the rack to the optimal position solves the bumpsteer problem but the roll center is still below ground level. Some sources say the optimum position would be 2-5" above ground. Yet John prefers a position below ground.

2) it looks like changing to a drop spindle with the same frame ride height may also be a solution. Doing this, in essence, lowers the balljoints, in effect, doing the same as repositioning the inner ends. This raises the roll center into the above ranges. I would have to reposition the outer steering knuckle to above the arm to make the geometry proper. I haven't studied this far enough to find if there are associated problems, but it does look promising.

Any comments on the Roll Center location? I understand if the roll center is too low, it then requires a stiffer spring rate to control the roll of the car. A higher position affords a little better ride as lower rates can be used. Where do you draw a happy medium?

Paul
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