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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