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Aerodynamics, take 2

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I had been propogating the idea that the current Model 450 smart fortwo has a drag coefficient of 0.38, a figure that I got from a German fan site.

It seems that I am wrong; I got a model year 2001 smart brochure last night which shows a 0.37 drag coefficient for the 450.

Actually 0.37 is not all that bad for a car the size and shape of the fortwo.

The new 451 has a 0.35 drag coefficient, according to Le Moniteur Automobile.

The frontal area of the 450 is 1.95 square metres, so the SCd is 0.7215.

The frontal area of the 451 is 2.057 square metres, so its SCd is 0.7196.

So the 451 is ever so slightly easier to move through the wind than the 450.

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