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The main role in the development of a variomatic scooter is the weight. Empirical rule: lighter your rollers set, the most rpm is needed to push towards the outside roll through the centrifugal movement to set change change on the move. Heavier rollers must lower the RPM to start this process. This means that if your scooter is lighter Rotoli will need more rotation speeds to start moving. Heavier rollers allow you to start moving at low RPM. Each pilot will have to find out which level of laps is right for them. A series of factors a lot in this decision: the degree of development, the weight drivers, which weight (of rolls) are optimal, etc. weights variator :: exact adjustment causes of the weight small steps, of good quality, the best prices. Available for all types of common engine an.