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On Sat, 2003-08-30 at 18:04, Erik Litchy wrote: > I want to understand the areodynamics of my fastback. why are the louvers > where they are? wouldnt the passing air draw air OUT? it would almost make > more sense for a small scoop to be there. or am i off base? > The air flow there is not as you would think. John Jaransen (automotive aerodynamics engineer) went through all the numbers and figured it out. If you have not noticed, early T-3's had the louvers pointing one direction, and the later ones have them going the other. Most of the air flow through the louvers is caused by the fan. -- Russ Wolfe '66 FB MT '71 FB AT '65 Bug (not running) russw@classicvw.org http://www.classicvw.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org