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Old 06-12-2009, 01:48 AM   #12 (permalink)
TEiN
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Quote:
Originally Posted by fabrio. View Post
I think than a quote the air travel from the side car on the top of car, and then the roof rail can help this travel .



Not, I do not are amazed, only, I whont to know if my think is it correctly!

thanks for answer, you are helpming me, to correct my English

Fabrio,

If I understand what you are saying, I think you are correct in thinking that the vertical pieces that extend from the front to rear on the roof are to keep the air that is on top of the roof from spilling over off the sides, and to keep the air that is on the sides from intruding onto the roof area. I believe that these pieces work similarly to sideskirts on race cars used to keep the low pressure area under a car from pulling in air from the sides.
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