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Old 11-12-2010, 01:56 PM   #287 (permalink)
Join Date: Jul 2008
Location: North Central Alabama
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Not to get picky on you Jim, but your graph should say FE increase on the y-axis, not Drag Reduction (%). The % Drag should be approximately 2 times as much as the FE increase (maybe 21% drag reduction at 56 mph), and would be measured by coast down testing. With that being said, very impressive! I was guessing 12% myself, just based on the SedanKamm I had built earlier this year, and figuring you would get double the results (yours is both top and bottom, and tapers on the sides)

EDIT: I retract my previous statement, I see what you were doing, your posting showed the first picture twice, and I never got to see the second one.
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