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Old 03-15-2010, 03:04 PM   #40 (permalink)
Aero Wannabe
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Join Date: Dec 2007
Location: NW Colo
Posts: 671

TDi - '04 VW Golf
90 day: 53.89 mpg (US)
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robert, It's good that your Kammback is clear. You can easily tuft test it with a quick look in the rearview mirror in real time, real world conditions, real driver in driver's seat. I made a coroplast prototype Kammback but couldn't see the tufts by myself and haven't had time to get back to the project.
60 mpg hwy highest, 50+mpg lifetime
TDi=fast frugal fun

Originally Posted by freebeard View Post
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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