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The variator transmition usses a belt and 2 adjustable drive pullys. One pully has weights in it that adjust the ratio by RPM's. The second just has a spring that reacts to the first pully. I don't think they make em for puch. From what I remeber the puch only cam with either a single or dual speed, it also is chain drive. I used to have a 2 speed puch and a single speed garreli, I swear that the garelli was always faster. Scott
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