Hank.. Reason I question it is because I own one of exactly the same Scoots. With all the bells n whistles it will hit 56mph at 10,000 rpm...unless I up gear it. As you know these are normally aspirated engines..while the Aprilla with the Ditech engine is not. Using an online calculator from another site..the stock gears and tire size we have means the engine would have to turn 12,000rpm+ to hit 71mph.Which seems about right...since I hit 10,000 to get 56mph. The engine would also have to make just over 10 hp. When I bought my tuned pipe I did LOTS of research...and the best pipes on the market for a 70cc BBK were dyno'd at 8.5 hp.
Hope your weather over there is better than ours up here. 3 Days ago and the whole week prior we were 90+ degrees and miserable.Then bam! 3rd day into Sept and I wake this am to 41 degrees..so cold I could see my breath...yet 3 days ago it was 70 degrees by 7 am...and humid.Today's high is 30 degrees cooler than all of last week.Eeeshhh..like hitting a light switch..*click*.. "Hi..I am September..get your jacket"..
