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Old 03-29-2012, 12:27 PM   #7 (permalink)
COcyclist
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Quote:
Originally Posted by Sven7 View Post
On wagons and fastbacks a diffuser at the wrong angle can increase drag. Assuming your car is about 0.3 Cd it is possible that a badly engineered diffuser could take away those 2mpg.
Good point. The angle may have been part of the problem.
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Quote:
Originally Posted by freebeard View Post
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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