Quote:
Originally Posted by j-c-c
Originally Posted by j-c-c
Interesting, but not sure how applicable that was to the original discussion.
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This is from the opening post: "At highway speeds regarding mpg, in a full upright ride posture and at what point is a windscreen too big for mpg improvement?"
Your above IHPAVA reference is not likely highway speeds related, nor an upright position, nor sustainable for long in most cases being it's a crouched riding position behind a windscreen or maybe an obscure fairing.
I think this whole discussion should not lose sight of the "measurable vs significant" symmetry here.
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Whoops!
I'll look at Hoerner's stuff.
He'd reported Cd 0.90 for an upright motorcyclist without any aero aids. And I think he shows some Cds for alternate configurations. It's dated material, but may have some general utility.
Alex Tremulis used his material to design his 'Gyronaut', Bonneville LSR, Triumph motorcycle streamliner.