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Originally Posted by JacobLeSann
Hey all, do any of you have info/explanations of the aerodynamics behind the Bi-wing spoiler on the Ford Sierra/Probe III concept. I’ve read that it reduces drag, but I’ve also heard that it’s a measure for creating downforce. I’ve not found a concrete answer yet.
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Lutz J. Janssen & Friedl W. W'u'lfing were the co-inventers.
If you can find a copy of United States Patent No 4,533,168, it has their full explanation.
I got mine off micro-film at the Dallas Public Library. It could be available online.