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Old 04-15-2012, 05:48 PM   #320 (permalink)
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Join Date: Dec 2007
Location: Southern California
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1999 Saturn SW2 - '99 Saturn SW2 Wagon
Team Saturn
90 day: 40.49 mpg (US)
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jimepting -

Originally Posted by jimepting View Post
I can understand your impatience to get started, but your building effort will be long, and expensive. Why not try to understand the aerodynamic principles first. Mistakes will be expensive and time consuming to correct. Phil has put an engineering lifetime into trying to understand the principles.

Probably the best way to get a very quick education is to get your hands on a copy of Hucho's book. Most of the main principles, as they apply to cars, are discussed in just a couple of chapters of his book, complete with graphs. He has lots of equations, but you can get most of the information by just looking at his graphs. A required read, as a minimum, before you spend money or effort.
Yes, this is good advice. When lovemysan made a belly pan, the work was impeccable ...

saturn pictures by lovemysan - Photobucket

... but execution details ended up hurting his aero. I think he was able to fix it, but it was discouraging at first to see all that work cost him MPG. He eventually dumped it :


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