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Old 08-20-2008, 03:14 PM   #6 (permalink)
aerohead
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aero mods

Tucking in does not reduce your Cd,but it significantly reduces frontal area.If you want to plug some numbers into MetroMPG's formula,you can use Cd0.90,and Af 6.0 square feet( or metric equivalents[I haven't looked at the program sorry!]).I think you'll be surprised at drag at 38-mph.
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