Quote:
Originally Posted by RH77
Right, but I think what Fabrio means is that it abruptly curves upward, which can create turbulence. "Straw A" does not equate to your design:
Straw "C":
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____________J
It looks like it would need to be flush with the rear bumper as well -- the air goes upward and gets trapped.
RH77
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It does abrupty turn upward but it's curved such a way that air exits after the bumper and not inside the bumper...
I went through 2 previous designs until I got it right on this one...
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____________J
I made a little improvement on your design which clearly shows that air never hits the inside of the bumper...
All the aero stuff on my car and increased tire pressure only increased my hwy mpg +10...giving me about 39mpg hwy...but for the city I got 23-24mpg and I drove most city so I had to get rid of the car...
The car I currently have gets 35-36mpg city and 48.x on the freeway...those numbers are hypermiling of course...If you aren't satisfied get a more efficient car...