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Date:         Thu, 3 Nov 1994 17:41:10 -0800 (PST)
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         ray landers <rayl@netcom.com>
Subject:      RE: mpg enhancements

On Wed, 2 Nov 1994, Jim Macklow wrote:

> > Anyway, lately I've been thinking about putting that pole with a plate > or cone on the end on my van's nose, and see how fast I can go. Right now, > wind drag increases as I approach 90mph. I don't think I've been above > 90 (maybe on a downhill?) >

i doubt that anybody would be interested in even a partial explination of the physics involved, so i'll just say that the shape of the rear of the bus needs more attention than the front for any significant change in the resistance to moveing through the air.

look at dolphins, 747's, the classic tear drop shape, submarines (like the soviet alpha class).

the shapes all have a blunt front and a long tapered tail.

this prevents the low pressure area in the rear from forming.

ray


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