Quote:
Originally Posted by graver555
Design of a square tube bumper with aero in mind is what I wanted opinions on, with the addition of an airdam while I was working on the front end to help offset the additional drag of the bumper.
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A deer-proof 3" square-tube bumper would have the potential to destroy attached flow at all the forward leading edges,raising your Cd from 0.42 to maybe 0.70 or worse.It would be aerodynamic Armageddon.
You'd need to encase the entire thing inside a 'skin' and radius all the edges to at least what GM did originally or you'll end up with a HUMMER H-1 or 1971 JEEP CJ.
If the airdam goes below the bottom of the truck,without going to within 3-inches of the ground,it'll raise drag.If it goes within 3-inches of the ground it will hit everything,every time you go up or down a driveway or park,nose to curb.