Ran a test today of the fuel mileage computer and the range left in tank. When I came home Friday I had an indicated range of 35 miles left in the tank and 280 on the trip meter. I put some gas in a can and put it in the pannier and took off this afternoon to see how accurate everything is on my Adventure Sport. Fuel Economy was showing at 46.7 mpg. At 300 miles the bike started coughing on slow high-lean corners, and the last remaining range of 14 miles went to blank about a half a mile later. I was about 3-4 miles outside of Mt Angel, OR so I decided that I would go into town and nurse it until I thought it would die and try to get to a filling station. At 305 miles on the level and with a Union 76 station a hundred yards in front of me, it was cutting out and running very rough. I rolled in and the tank took 6.395 gallons in the advertised 6.4 gal tank. It is possible that I could have nursed it another mile or so, but I considered it a valid test. That calculates to 47.69 mpg, or just 1 mpg more than the computer said. Lessons. 1) When push comes to shove my ATAS has 10 miles less range than claimed when the light comes on (came on at 53), and 2) the computed efficiency is a touch low. This tank was 91 octane alcohol-free gas, I was riding my Manual Transmission in Urban Mode, speeds were moderate with very little over 70 mph and average speed was 58-ish. Caution- Your mileage may vary.
GL1800A, KLR 650, ATAS, 1972 CT2 Cessna Skylane
Fly low, fly high, but fly!