I get about 65-70 MPG on my 78 in town. All stock except for some emgo shorty mufflers that don't do much muffling. Has 13,000 miles and I have got the carburetors and timing tuned just right, starts first kick when cold every time!
That could be the key.... All stock ...
It has the stock sprocket setup, nothing out of the ordinaryThat could be the key.
I'm just curious if you have the stock sprocket combo on yours or if you or a PO lowered the revs with a different ratio.
While I had the Honda Nighthawk 450, I noticed that it had a large error/differential from my Maxim. The identical trip would yield 2 trip odometer readings 10% apart. I went through one of those portable radar signs with an indicated 50, sign said I was going 56. On the Maxim, the speedo was about right. I attributed this to an over-sized front tire on the Nighthawk, assuming the Maxim has NOT been short-changing me by 10% all along.... normally when I am doing 70 MPH, the tach is usually around 6200 RPM's. Today I thought it was about 6500 RPMs at 70 ...