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Old 01-20-2022, 10:02 PM   #77 (permalink)
freebeard
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Quote:
OK Now your pulling my legs...both of them.
....
The 64,000 Dollar question is will they do that at higher speeds??
Trollish typing detected.

The answer is tripartite: aero, drive train and the knut behind the wheel. Small bills, please.

Drive train should go to General Efficiency, but you raise a subject for aerodynamics, box vans. I propose transparent pilasters (half columns) over the headlights. They bellmouth the radiator opening and shrink the stagnation area. I went so far as preparing this for an old thread:



The contrast is low, but the other features are repositioned rear-view mirrors and Turnpike Cruiser skirts.

Here is a design for my old panel van that has an airfoil diverter, front skirts and a full boat tail:

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