I finally got out and did a series of steady state speed vs. mpg runs in the Aerocivic. Finding a sufficiently level road was a search (this region is called the Piedmont for good reason), but I found a 6 mile stretch of highway that paralleled a railroad right of way that was very level and had only a 53 foot height variation along the 6 mile stretch. Elevation of test road was 700 feet above sea level
Air temperature at time of test 91 degrees F.
2 runs in each direction at each speed. Remained in lean burn at all speeds tested.
I don't have a graph generating program on my computer so I'll just list the numbers. If anybody wants to plug them into a graph, go ahead.
50 mph 95mpg
55mph 87mpg
65mph 77mpg
70mph 71mpg
