Quote:
Originally Posted by arklan
is it better to have a car with low cd or low frontal area? if u can only have 1
been googling this and reading about cda but havent found a clear cut explanation
my car has a frontal area about 1.5m2 but a cd of 0.4~
im thinking of which direction i should upgrade my car (its electric)
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For an 'upgrade', it would not be practical to shrink the car by any means.
At Cd 0.4 and Af 1.5 m-sq you're at CdA 0.60 m-sq ( 6.456 sq-ft ).
If you went completely aerodynamically insane you could have a road-going Cambridge University CUER solar racer body of Cd 0.10. This would be 25% of your current drag coefficient.
Your new CdA would be 0.15 m-sq ( 1.614 sq-ft),25% of your current figure,for a 75% drag reduction.Your 'fuel economy' would increase about 37.5%.
