Quote:
Originally Posted by alohaspirit
thanks for the info & pics
how much mpg gain did you say you got vs stock?
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This is a hard question for me. The reason is I'm not 100% sure.
Shortly after building the wing, I tested it very carefully and got a 3 mpg improvement no matter what my speed was. (At 60 mph, I got 58 mpg without it and 61 with it, as I recall.) This actually makes some sense because at higher speeds, the 3 mpg represents a bigger gain.
Later, I measured my Cd and Crr (rolling resistance coefficient). Armed with this and some other car parameters, I can calculated miles per gallon a-priori.
I will check my figures on this and write a little later, I just got a call for dinner.
Ernie Rogers