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Post by cougarmccxxi on May 25, 2010 10:14:14 GMT -5
I began upgrading my Kymco Agility 50 drivetrain last weekend. So far so good; just thought I would post a bit of commentary of my experience on the forum.
I have installed the Naraku high speed variator, 5.8g Naraku rollers, 1000 RPM Naraku contra spring and the NCY racing coil.
The results have been great. The motor RPM's remain constant on flats as well as steep uphills (this was an issue prior to the upgrades). I cruise on flats at 42 MPH and climb the steepest hill at 30 MPH. Downhill top speed was the biggest surprise; 51 MPH downhill.
So I am very pleased with the results of the parts and the service from Jeremy at Enviromoto. My next step will be the Stage 4 72cc kit from Enviromoto. I am hoping for 50 MPH on flats after the Stage 4 kit installation.
As a footnote; gas mileage went from the high 80's to 105 MPG!
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Post by Bluefront on May 25, 2010 10:34:50 GMT -5
Nice you got it going better.....but 50mph is around 10k rpms on these 50s, maybe a little higher with your roller weight. I have serious doubts about the durability of the stock crank, pushing the engine like that. The redline is about 8000 rpms. But it's your engine......
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Post by cougarmccxxi on May 25, 2010 10:43:35 GMT -5
Nice you got it going better.....but 50mph is around 10k rpms on these 50s, maybe a little higher with your roller weight. I have serious doubts about the durability of the stock crank, pushing the engine like that. The redline is about 8000 rpms. But it's your engine...... Ya, maybe I'd better behave. I was really shocked at the downhill speed gain after the mods; I gained about 5 MPH. My guess is the coil is sparking more consistent and the variator face is slightly different giving me a "higher" gear. I need to get a Tiny Tach as well. I really dont want to blow anything up and monitoring the RPM's is good in any case.
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