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Old 03-11-2013, 12:28 PM   #50 (permalink)
RiderofBikes
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Join Date: Apr 2012
Location: kansas city, mo
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Pantry Boy Supreme (pbs) - '04 Volvo S80 T6 Premier
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Quote:
Originally Posted by aerohead View Post
Slower,higher pressure air under the truck would want to escape out the hole,perturbing the airflow right there.

I think this same thing, not so much about perturbing the airlfow exactly, though that will happen, but more along the lines you'd have obvious unequal air pressures opposites of the panel. Even with your shelving supports are more than enough strength to hold it, I think keeping the two pressures seperated will keep the drag/downforce at minimum, the pressure vent you have following your rear wheels should suffice.

You have to also remember, that closing off the entire wheel well area, you are in turn creating more side surface-area without pressure release through your material that causes you to be affected by crosswinds more.. Think of your skirt as a Sail, No holes means more efficient in catching air and moving, and a Sail with holes... Your open wheel well acts as a Sail with holes. Not to mention theres not alot of contour to the body side-plane and vastly lower Belly pan that prevents that side wind to go under and elleviate pressure that inhances lane drift.
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