Skip,
I'm noexpert but wouldn't the fence increase the frontal area? Maybe I'm
getting confused between a fence and an air dam.
Howard
----- Original Message -----
From: "Skip Higginbotham" <saltrat@pro-blend.com>
To: "Thomas E. Bryant" <saltracer@awwwsome.com>; <land-speed@autox.team.net>
Sent: Tuesday, April 24, 2001 5:39 PM
Subject: Re: angle of attack
> 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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