Here's an 'on-topic' question I was thinking about recently...Which would be more aerodynamic with a
long, "clean-shaped" item(re:kayak, canoe, or ski box) mounted on the roof??
- a typical 'two box'(sedan)
or
- a typical 'three box'(wagon)
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My best
guess is...The roof-mounted item is a detriment on either shape, but something tells me that a 'three box'
might have an edge. I'm wondering if the
rear overhang of the item on a sedan could possibly "encourage" low pressure beneath it that isn't normally present...thereby negating the 'two box' advantage?
Remember...I'm no scientist, I sell auto parts for a living