Gene:
It is easy to find the center of gravity, use two floor jacks, jacking
the car up from the sides, and find the point where it balances. Center
of pressure is a little more evasive. Basically, on most cars it would
be the windshield or cowl area. (Where the frontal area is largest) The
center of gravity needs to be ahead of the center of pressure, so I have
been told.
Wings are allowed on Streamliners, Lakester, Modified Roadsters, and
Production bodies which had the wing as an option. I don't think you
have that choice. Production Spoilers are allowed, and add on spoilers
in some of the coupe & sedan classes. I can't offer too much insight on
spoilers. We have added one to our car it has changed the dust pattern
behind the car. Obviously the vacuum has increased, but, everything has
a cost. Costs and advantages have to be weighed. So far, we think it is
profitable.
There have been some really fast Corvettes on the Salt. I'm sure that
their owners and drivers would be glad to share information they have
gained. That is the great thing about our sport, everyone is willing to
share their knowledge, often gained at great expense. Good Luck with
your project.
Tom
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