10-31-2007, 07:13 AM
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Richard Jemison
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Join Date: Apr 2005
Location: Pensacola, Fl. U.S.A.
Posts: 1,443
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Handling
 Quote:
So here's my suggestions:
I assume you're using the drop spindles to lower the car instead of lowering with the torsion bars. I think this is part of your problem. The distance between the upper control arm and lower control arm has been altered, and thus the geometry. The bump steer is affected by the arcs of both the upper and lower control arms. By the numbers, the factory stock steering geometry calculates out perfectly with about a 1/2" drop of the lower ball joint, so the factory dimensions are almost perfect, if the car is lowered a bit.
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The 116/119 suspensions are not optimal, and for racing far from it.
The correct position for the lower arm is level in normal running (race) setup. With a longer upright the upper arm`s outer pivot arc is much more inclined than the lower so that under load the wheel & tire take on more neg camber. As well the other inside tire takes on more positive camber. When set up right you use both much less initial neg. camber and if the altered steering arms are positioned correctly for bump steer correction AND Ackerman increase you need no initial toe in or out. Result... a much more stable track car with better turn in & predictability.
Kits like the RSR are a crutch only. Torsion bars need to be a minimum of 27 to 33 on this tall heavy car, rear springs in the range of 175 to 200 depending on size of torsion bar. With a 27mm front swaybar use the smallest rear bar available which is the one from the Alfetta GT or the stock Milano unit.
The deDion tube can be bent for a 1/2 degree of neg. camber, but if then not reinforced (across the entire tube), the tire loading flexes it back to strait. If not corrected you have Positive rear camber in turns. All this has been covered in earlier post.
Scroll down to the bottom of the "how to" section of my website for more info & pics. I hope it provides the info to help with your issues.
The Original SCUDERIA GIALLO
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Richard Jemison
RJR Racing
http://scuderiagiallo.com
"you don`t have to listen, but you won`t win the argument"!
"Nothing that I might suggest will be legal in California"
Last edited by Alfar7; 11-01-2007 at 08:54 AM.
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