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Old 04-02-2017, 03:55 PM   #11 (permalink)
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I think it's just a compromise not as good as removable racks better than full size racks
Aerodynamicly however I think it would promote a vortex along the top of roof in even a lite cross wind

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Old 04-02-2017, 07:31 PM   #12 (permalink)
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That's exactly why NASCAR uses them, to kill lift when you get sideways.

https://en.wikipedia.org/wiki/Wing_fence

Airplanes use them to delay stall. Race cars use them to channelize air in the diverter.
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Old 04-05-2017, 04:55 PM   #13 (permalink)
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i used such "reels" for reduce sidewindproblems on my velomobile. On a very aerodynamic car it could usefull
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Old 04-05-2017, 05:10 PM   #14 (permalink)
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Somewhere around 2001 and 2002 some grand prix and Monte carlos came with roof fences in a special edition. A knock off smaller version of what was on the nascar cars.
I love gimmicky low production crap like that. Also see the 80's Monte Carlo aero coups with special back window and the greatest of all time, the Superbird and Daytonas.

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