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Old 07-24-2008, 06:13 PM   #22 (permalink)
knucklehead
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Quote:
Originally Posted by jhnmdahl View Post
The point of lowest pressure is under the car where the velocity is highest, not at the diffuser. The downforce is created by the relatively low pressure of the air under the car, and the diffuser prevents the air from becoming turbulent while it decelerates, or "stalling", which would reduce the downforce created under the car.

It does work essentially the same as an airplane wing, where the lift comes substantially from the middle/thickest part of the wing, and not from the trailing edge...

John
Interesting. So how does the longer diffuser effect the point of lowest pressure? Does it move it forward? Toward the rear or not at all? Or does is create a higher velocity and therefore a larger amount of downforce?

Thanks everyone for sharing your knowledge. I'm finding this thread fascinating.
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