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Old 12-22-2011, 10:56 AM   #6 (permalink)
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I agree that it might be a vortex generator of some kind which alters the flow over the car, or creates it's own small vortex which affects the larger one which would normally form.

I did some studies on pick-up truck roof cabs which intended to do something similar. However I am far away from doing something about it (spring project), and even farther away from proving how or why it may work.

Anything which lowers the air pressure at a critical point (aft) will result in sucking the air above it (at higher pressure) down. In the end, it will appear as though the overall flow is better.

Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:

Rear Spoiler Pick Up Truck

Roof Wing

Last edited by kach22i; 12-22-2011 at 11:06 AM..
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