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Originally Posted by beef_bourito
i thought the cars were designed to have very fast air moving underneath, not much but the air that does goes faster than on top. this is because of bernouli's principle about how fast air provides less pressure in directions other than where it's moving. kinda like an upside down airplane wing.
And puting scoops under a car would interupt this, slow down the air and remove downforce. even if it did raise your top speed it would make it incredibly hard to control and would lower your cornering speed and g's (the more important part of the race, how often do cars actually reach their top speed?).
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You're thinking backwards. Yes, the side that has the faster moving air is the side with the lower pressure, forcing the object to move that way. Cars are just like wings. The lower pressure on top and higher pressure underneath. It's the bubble shape that causes this, just like a wing. Lowering the car and smoothing out the area underneath lowers the pressure below the car to at least, if not more than, that pressure on top of the car.
You want to create a vacuum underneath the vehicle, where in stock form there is positive pressure(or at least more than what is above the car).
kopter dude.....maybe I'd cool it if you just paid attention rather than asking the same question 20 times.