Quote:
Originally Posted by bammax
Somewhat removed but still on topic.....
To get good mileage leave you're tailgate on and latched closed. Tests showed that removing the tailgate, leaving it down, or replacing it with a net all reduced performance. Turns out a cushion of turbulent air builds up in the bed and acts like a cap to improve aerodynamics at speed. You could also just go with a full cap for the same effect, but the one nature provides doesn't cost anything and weighs less.
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Agree. The truck was consciously designed for it to perform in that manner.
When we built the Don Stringfellow Bonneville speed truck (S truck) we found that even a "1/2 cover" (enclosing just the back half of the pickup box) was sufficient.
K
