90 degree oat, 49% humidity, Density Altitude 3,000 feet Going down a moderately sloped hill but unsure of the grade. GPS logged on "speedometer gps" android app. 51.45 mph! I fixed the high rpm surge, the carb needed to be mounted more level and I adjusted float height. The 34 tooth sprocket is way too much though since the bike still could have gone faster I just ran out of hill. On level ground it will sustain 44 mph. Next I need to do some quality mag wheels and a fairing of some sort.