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Here is a modification to the variator I have done on a Ruckus/Zoomer. The the PCX and the Ruckus/Zoomer are comparable to each other on the parts schematic.

I shave/sanded .5-1mm off the drive face which pushes the belt higher on the variator, thus giving you more top speed. I think it might work on the PCX too. A new drive face is inexpensive if you mess up the modification.

This mod requires lighter rollers. I use a gram scale and a round file to lighten the inside of the rollers.

Here is a "how to" I put together for modifying the drive face.

http://totalruckus.com/phpBB3/viewtopic.php?f=11&t=28287

Good luck!

Nope he vanished !!

If he is using Honda parts, the seller is modifying the drive face and the variator. This mod works pretty well, as you can use lighter rollers giving you better acceleration, and giving you higher top speed as well. You will have to play with roller combos which might include modifying stock roller weight. I use a gram scale and round file to make mine.

Here is a link to a "how to" I put together for my Honda Ruckus/Zoomer. The idea is basically the same for any CVT scooter transmission. If you mess up the drive face, they are about $20 at the parts counter.

http://totalruckus.com/phpBB3/viewtopic.php?f=11&t=28287