

| Subject: | Re: aerodynamics, was: 101 MPH Vanagon! |
| From: | jimt |
| Date: | Mon, 18 Oct 2004 16:20:47 -0600 |
On 10/18/04 3:51 PM, "Kim Brennan" <kimbrennan@MAC.COM> wrote: > An excellent picture. Note that the Westy has significant turbulence > over the top (the laminar lines break up almost immeadiately over the > luggage rack). The passenger Vanagon (blue one) has pretty decent > laminar flow. The Beige one has a popup top that causes a bit of > turbulence. > > Reading the fine print I think it says that the CD on the blue > passenger is 0.44, on the beige popup it is 0.45. On the westy it is > 0.51. On the Hi-top it is 0.40 (!). On the singlecab with camper it is > 0.45. Also appears to have the varying front area too. > > But not that the westy had the worse CD (and those are regular > Vanagons, not syncros, which should have worse CD's due to increase > ground turbulence. > > That westy pick definitely showed what I was suspecting. The pictures of that flat zone are what interested me most. They definitely accent what I was told about needing to shape the nose flat area. The high top being that low is because of the flow around its form. ���������������������������������������� jimt Planned insanity is best. Remember that sanity is optional. http://www.tactical-bus.info (tech info) http://www.westydriver.com
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