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Old 08-01-2024, 12:01 PM   #30 (permalink)
aerohead
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' 110-mph '

Here's a way to pencil-whip your reported top speed findings:
* As of December, 1986, Doctor of Engineering, Wolf-Heinrich Hucho provided us with some 'math' that could be used think about the relationship between drag reduction and top speed.
* Using nothing but aerodynamics, in order to increase the top speed of a road vehicle by ten percent ( 10% ), would require a drag reduction of roughly thirty percent ( 30% ).
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* reporting a top speed improvement, from 80-mph, to 110-mph equals 110/80 = a 37.5% top speed increase.
* If it takes a 30% drag reduction for every 10% increase in top speed, and you've increased speed by 37.5%, then 37.5/ 10.0 = 3.75 X 30%, or, 112.5% drag reduction, to achieve this result.
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* For a working number on a garden variety passenger car of Cd 0.32, by completely 'ELIMINATING' the car's cooling system, you're only looking at a 0.025 drag reduction, or, Cd 0.295. A 7.8% drag reduction.
* For you to expect us to believe that by removing slats from the cooling system of the Transit, that you accomplished a 112% drag reduction points to a fatal flaw in your measurement technique.
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