Quote:
Originally Posted by aerohead
Here is GM's patent illustration for their patented half-tonneau,including the drag table for different length configurations.
It's for a circa 1985 GMC/Chevy,so it's not a 1:1 comparison with modern trucks.
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Here's a link to the patent text. It says the vertical bulkhead only offers a slight increase vs the partial tonneau alone. It looks like that truck is a long bed, so I'll have to adjust some for my short bed. If my logic is correct, it's the size of the open area that's the money maker, so for my truck I would probably be best with a 30-40% cover to provide an optimal vortex size. If the image is to scale, it looks like the 50% opening is the same length as the height from the floor of the bed to the top of the cab, maybe I should try the same? Does that sound right, aerohead?