Quote:
Originally Posted by JDM-dono
If supposedly air does reach the gurney flap you'll have a higher pressure region above the wing (than without the gurney flap)... In essence it's slightly functional but not to the point that it's measurable improvement in downforce IMO.
EDIT: Think of it as air hitting a brick wall, there'll be high pressure region in front of the wall. By having air hit the gurney flap you'll have high pressure above the wing.
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Believe it or not a wicker can have a significant impact on a wing. Now I'm not an aero guy so I can't give you in depth details but I have a pretty good idea on some of this stuff. I work for a racing company and I've been around for some testing. 1 mm height adjustments of the wicker can effect the top speed of the car by a couple mph. Granted the cars tested were going upwards of 185 mph. Taller wicker = more downforce = more drag. I've also been around for completely losing a wicker off a wing while on track (tight course) and that effected the rear downforce and balance of the HUGE.
Keep in mind that these are race cars and are much different than the BRZ but the wicker should have the same effects. Just nowhere the same extent since the brz wing/spoiler is far less effective than one on a GT car. Anyways, I was just trying to explain that a piece like that DOES make a difference.