Quote:
Originally Posted by Joenavy85
angle was due to size of cargo box and how tall i can make it without obstructing my window too much. i would have the box go to about 5-6 inches above the spare tire, which would only block about the bottom 1/4-1/3 of the rear window.
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What I was suggesting (a 15 or less degree slope) would allow you MORE visibility and LESS drag. You will find that pressure drag would indeed be less if done like your drawing, but total drag would be more. Total drag usually bottoms out with a slope around 15 degrees, at least for a "fastback" design as opposed to a full out boat tail.