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Old November 26th 2005, 23:10
PJL54Oval PJL54Oval is offline
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Join Date: Oct 2005
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HotRod Magazine just did an article on this subject. Some simple things to do are the front air dam, Lower the front of the car sightly more than the rear (accelerates the air under the car), Add side skirts to prevent air from entering the bottom from the sides and Spoil the air off the back of the car. Spoiling the air actually accomplishes two things. It decreases lift especialy with the shape of the beetle and also reduces drag by eliminating the low pressure at the back of the car.

Now on a completely different line of thought, has anyone here ever seen the Chaparral 2J? It was nick named the "sucker car" and had two fans mounted on the back of the car to literally suck the air from under the car. If you are running an air cooled engine you could draw some of the air from under the car (like some of you do) and this actually helps! Here's a link that shows the two snowmobile engine driven fans on the 2J car. http://www.petroleummuseum.org/Chaparral/Tour4Indy.html

I doubt that this will help us much but it was really cool to see.

Jim Hall was a pioneer in Ground effects and dominated road racing. He won indy his first year (Johnny Rutherford driving) by channeling the air under the car to create down force.

Last edited by PJL54Oval; November 27th 2005 at 12:02.
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