I did a real world test on gas mileage. I went 39.7 miles, so 40 miles (64.37km). I used 1.7 gallons of gas (6.43 litres). That comes out to 23.5 miles per gallon (10.01km per litre). Half of the ride was on the interstate, I don't hold the bike at a steady pace, I run 65 to 74 mph (104.6km to 119.09km) . Top speed was 81.2 at one point (130.6km). Must have been on the close circuit part of the ride.
The other half was secondary roads. About 40 miles per hour (64.37km per hour). I don't remember what jet I have in the carb. Stock chain and sprockets. FMF Gnarly pipe and a Power Core 2 that should be repacked. Reed spacer with stock reeds. 110 octane race fuel @ 40 to 1 gas/oil mix. I usually mix 50/50 110 octane race fuel with 91 octane pump gas.
That should give me a 70/80 miles range per tank (112.6/128.7km).
OK, Dutchie, how do you like the conversions?? Correct Euro spelling for liters??
Man, the conversions made my brain hurt.
Picture shows the gas usage, from full, 40 miles (64.37km).