Well, in my case, rules won't let me put a skirt
or fence on. Using stock Z-28 front spoiler, I
would probably have to rake the car a couple of
inches to get any useful effect. If I were
running in a class that would let me, the whole
car would be 1 - 2" off the ground.
Dick J
--- Skip Higginbotham <saltrat@pro-blend.com>
wrote:
> I always wondered...why do people rake the car
> when a fence will do the
> same thing (keep air out from under the car)
> and it doesn't worsen the
> "designed in" lift/drag characteristics.
> HHHMMMMM?
> 90 degrees....Geeezz 74 here in central Texas
> Skip H
>
>
>
>
> At 07:02 PM 4/24/01 , you wrote:
> >Ed,
> >I don't know if there is a recognized method,
> but measuring the bottom
> >line of the car would seem to be proper.
> >
> >It is my understanding that the rake has more
> to do with the air under
> >the car than that on top. Under the car the
> air becomes turbulent and
> >needs more room to exit than it did to enter.
> Of course, the wedge
> >effect (as with my car) does give down force
> to the chassis, from air
> >over the top, sometimes more than you may
> want. I have not measured the
> >down force on my car, but I do know that the
> skirting at the nose of the
> >car is badly worn from contact with the salt
> on the course. At rest it
> >clears by at least 2 inches. Just some food
> for thought!
> >
> >Tom, Redding CA (90 degrees) - #216 D/GCC
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