Date:         Mon, 18 Oct 2004 13:19:54 -0600
Reply-To:     jimt <wetwesty@TACTICAL-BUS.INFO>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         jimt <wetwesty@TACTICAL-BUS.INFO>
Subject:      Re:       Re: aerodynamics,
              was: 101 MPH Vanagon!
Comments: To: FrankGRUN@AOL.COM
In-Reply-To:  <140.34cf985a.2ea54a02@aol.com>
Content-type: text/plain; charset="ISO-8859-1"

Thankyou thankyou for that westy number.  I was just banging my head to a
pulp trying to calculate the difference of that westy top in the squares and
in the coef value.

Thanks

••••••••••••••••••••••••••••••••••••••••
jimt
Planned insanity is best.
Remember that sanity is optional.
http://www.tactical-bus.info (tech info)
http://www.westydriver.com
 
> Alistair,
> 
> Greetings from Yungay Station, Antofagasta, Chile with relative humidity of
> 1.1 to 4.2%!
> 
> Some numbers! The drag coefficient (Cd) and frontal area (A) for the regular
> Vanagon are 0.45 and 3.06 m2;
> 
> for the later Vanagon with front spoiler lip,the values are: 0.44 and 3.08
> m2;
> 
> for the Westfalia, the numbers are 0.52 and 3.17 m2;
> 
> the later Westfalia with spoiler drops the drag coefficient to 0.51.
> 
> The European hightop camper (Dehler profile) takes the drag coefficient to
> 0.40 with a frontal area of 3.61 m2.
> 
> So highest drag for the Westfalia and the Euro hightop has essentially the
> same drag as the regular passenger version.
> 
> BTW, I have info somewhere that the drag coefficient for the syncros is
> higher by about 0.03 but I can't place my hands on those notes just now.
> 
> 
> Frank (Grunthaner)
> 
> This data comes from VW factory wind tunnel tests, conducted as they worked
> out the optimal gearing for the various powerplant combinations.
> 
> Pleased to see some technical discussion on the list!
> 
> 
> Frank Grunthaner
> 
>