TheNeedForZ Posted March 4, 2006 Share Posted March 4, 2006 See for yourself. Read about the data supplied by Porsche http://www.autozine.org/technical_school/aero/tech_aero.htm#Undertray Experts please explain. Quote Link to comment Share on other sites More sharing options...
thehelix112 Posted March 4, 2006 Share Posted March 4, 2006 They're not talking about a wing reducing lift as much as they're talking about ground effect causing downforce at the back. Whats the question again? Dave Quote Link to comment Share on other sites More sharing options...
JMortensen Posted March 4, 2006 Share Posted March 4, 2006 There is a graph on the page (scroll up a bit) where they show the effect with and without the wing at 157 mph. Front and rear lift appear to be reduced with the wing up. Doesn't make sense to me. I used to work on Porsches, and my boss flat refused to install a whale tail on any customer's car if they didn't have an air dam too, because the whale tail alone would really make the front end light at speed. Quote Link to comment Share on other sites More sharing options...
TheNeedForZ Posted March 4, 2006 Author Share Posted March 4, 2006 Jon, That's what I thought as well, downforce at the back = lift at the front, like a seesaw. Quote Link to comment Share on other sites More sharing options...
thehelix112 Posted March 4, 2006 Share Posted March 4, 2006 Ahhh.. silly me.. Is there something else that happens when the wing goes up that they're not telling us? No fancy pants elec ride height adjustment or anything? Interesting stuff always. Dave Quote Link to comment Share on other sites More sharing options...
260DET Posted March 4, 2006 Share Posted March 4, 2006 Think what they are getting at is that a high mounted rear wing can reduce front and rear lift. Because the effect of such a wing is to straighten the airflow over the roof of the car to the rear of a fastback eg one like a Z or Porsche 911. In other words the effect of the wing is not just local, it extends forward over most of the roof of the car. By so doing it reduces lift over a significant part of the car, not just the rear. Make sense? Quote Link to comment Share on other sites More sharing options...
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