Under $20 VG
i think that is pretty hideous. aren't these sold to be put on ricer civics and scions where a 1 piece isn't made? and as for mpg..... lol. Can I ask why exactly you think this would improve mpg?
Evolved Member
Joined: Apr 2008
Posts: 1,016
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From: Denver, CO
Even with my limited knowledge on aeronautical engineering, I know that any type of item you put on top of a flat surface with uninterrupted airflow, creates drag. Think back to the days of Howard Hughes. The only way he was able to beat so many speed records was because of his innovations in aeronautical design. Making rivets flush on the body was what gave him the most speed.
A VG on an airplane, is used on wings to create a vortex that can essentially improve the effectiveness of control surfaces after the VG. If anything, the only thing you are gaining is greater effectiveness of your spoiler, which is offset by increased drag because of the VG. On a plane, a VG can give an aircraft a greater max takeoff weight, as well as reduce the stall speed. But, again, it still brings about more drag. So while you can create more stability with a VG, you are always creating more drag, no matter how well designed the VG is.
Because a VG creates drag, there's no way you are getting better gas mileage.
Bseides, how in the hell do you even pull off 17mpg anyway? My foot is so heavy that I'm lucky if I get 14 out of my daily drive, which consists of 5 miles of highway. The average is 11-13mpg for me. But when I hit the highway and set the cruise control, I can easily hit 23-25.
A VG on an airplane, is used on wings to create a vortex that can essentially improve the effectiveness of control surfaces after the VG. If anything, the only thing you are gaining is greater effectiveness of your spoiler, which is offset by increased drag because of the VG. On a plane, a VG can give an aircraft a greater max takeoff weight, as well as reduce the stall speed. But, again, it still brings about more drag. So while you can create more stability with a VG, you are always creating more drag, no matter how well designed the VG is.
Because a VG creates drag, there's no way you are getting better gas mileage.
Bseides, how in the hell do you even pull off 17mpg anyway? My foot is so heavy that I'm lucky if I get 14 out of my daily drive, which consists of 5 miles of highway. The average is 11-13mpg for me. But when I hit the highway and set the cruise control, I can easily hit 23-25.
