KymcoForum.com
General => Technical | How To => Topic started by: AylmerFreerider on September 08, 2019, 11:10:26 PM
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Hey all looking for some advice on this now. I have upgraded the gears now. It had a 14/54 and I was able to pick up a Vitality 50 2T and swap the gears from it. They are 16/53.
This works out to a 13% increase or remarkably 13kph but my scooter seems to be not able to get past 7000 RPM and still stuck at 68kph. So I am going to try lighter rollers and see how that works. Before I was getting 68kph at 7800RPM
Set up is as follows
72cc BBK
92 main jet
1000 RPM Contra Spring
6.5gr rollers (just installed 6.2 to see how it goes, I also marked the variator with a marker to see how high the belt will go.)
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Rollers don't affect top speed, only acceleration. You're on the right track with the gears, but now you need more hp to get a higher top speed. You're making the scooter work harder. Usual remedy is a BBK. With 100cc and your gears, and nothing else, you should be able to make 80km/hr. There is no substitute for cubic centimeters!
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I have the 72cc BBK installed. I could upgrade one pipe (from technigass Silent Sport to the Next R) and a bigger jet. I am getting more power since upgrading my air filter. Holding 72 now but hoping to hold 75 as a goal.. I wasn't looking for a huge boost just enough to be safe on the 70km/h roads.