Quote:
Originally Posted by JethroBodine
Those very corners have nagging at me for a while, but I was leaning toward the thought that if I did round them like you suggest, that the path way that the air travels from the front corners of the car would exceed the max angle of 21/22 degrees.
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Only a tuft test will tell for sure (well, that and a day in a million-dollar-an-hour wind tunnel...but you know what I mean). You may be thinking somewhat two-dimensionally about the 21 degrees. I have heard that you can go progressively a bit steeper, if you're getting air "filling in" from an adjacent side via a rounded corner. Which makes sense to me.
Tuft testing is time and labor-intensive, fiddly, and complicated to pull off successfully. But oh, so worthwhile.