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Originally Posted by sendler
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Originally Posted by freebeard
why would the drag increase?
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Vortex generators increase the energy in the air at the expense of drag.
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I think the vortex generator and the serrated trailing edge act differently, and that a trailing edge and a blunt body with base pressure act differently.
An example of a car with a serrated trailing edge:
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None of you are driving an insanely tuned aero dynamic vehicle (I've yet to hear of anyone driving a VW XL1 here yet)
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I suspect that basjoos and 3-wheeler are at that end of the scale.