Quote:
Originally Posted by The Atomic Ass
changing the ratios.
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DrPulley sliders do actually change the top ratio on many scooters including the PCX. The stock rollers run up against the end of the ramps before the pulley halves are touching, forming the limit of travel. There is always virgin metal that the belt never touches on the outer portion of the front pulleys with the rollers. The sliders are thinner at the side that comes up against the end of the ramp so they travel out further, moving the variator through additional range of motion to take the belt all the way out to the edge. It is a cheap and easy 7% increase in top speed at redline and the stock 18gm weights are too heavy anyway. My 12 gm sliders pull at about 7,900 rpm. 11 gm might be even quicker with the rpm even closer to the 8,300 rpm power peak.
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There are a couple final drive up gear kits available but I am content with a 71 mph top speed and 100 mpgUS on 55 mph back roads for now. If I want to run 70 on the highway to work, I take the CBR250R and get 90 mpgUS.