Quote:
Originally Posted by basslover911
Now my question is, how much positive PSI acts on a car's front bumper at 60-65mph? Anybody know?
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At 60 MPH the gain is about 0.5%.
At 100 MPH the ram air effect is about 0.177 PSI under ideal conditions.
If you want to work it all out for you situation the formula is:
Ad x V squared / 4287
Where: Ad = Atmospheric density. At sea level = 0.076lbs/cu ft.
V = MPH
In practical terms you would need to travelling well in excess of 200 MPH to get 1 psi gain.
Pete.