Rear Wing Design - Sideways Gurney Flap?

Posted by Ben

722 SLR McLaren Mercedes with Sideways Gurney Flap

I came across this picture of a racing spec 722 SLR McLaren Mercedes and I was a bit puzzled by the wing design. This is the first time I’ve seen a 90 degree edge like a gurney flap done on the end plate of a wing. I assume its functional due to the serious car its on and the fact that the car come equipped that way (not a user added piece).

Anyone have any insight on this?

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