Quote:
Originally Posted by Bicycle Bob
Getting the air to part is like pushing a pen through a sweater
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Yes, but are we talking about a pointy pen tip or a blunt one?
Quote:
Originally Posted by hypermiler01
There are some who focus strictly on Cd and seem to ignore air pressure
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Could you please explain what you mean by this a bit more?
The measure of air resistance ("Cd") is
inherently about pressure - pressure drag comprises the largest fraction of drag a road vehicle encounters.
So a vehicle with a low Cd is better at "managing" air pressure than one with a high Cd. It isn't possible to talk about drag coefficients of cars and "ignore" air pressure.