Quote:
Originally Posted by Eddie25
pics are not too scale! looking at about a 15 to 20 cm gap
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In his Masters Thesis on Dodge Ram aerodynamics,Feysal Ahmed discovered that between 'flush' with the vehicle belly,and 76mm ground clearance to the bottom of the airdam,that there was a drag increase.
This has been reported by two other investigators,and discovered by one of our members,who had to raise his airdam back up to rid himself of the drag penalty.
If you can get instant mpg numbers in the car,you might want to experiment with cardboard and duct tape to optimize the gap.