In a conventional gearbox, the engine will rev through to or through its peak torque through each gear, with the engine always playing catch up to its peak torque and efficiency within the gear its in. Unlike conventional gearboxes, CVT transmissions manage their gearing around the revs of the engine – rather than the engine changing revs around the gearing. The second reason is that theyre highly efficient particularly in low power engines. They’re simple, easy to maintain and cheap to repair. No computers, electronic controllers or other complex parts that are prone to failure. Firstly they’re fully mechanically automatic. Variators are used in scooters, and even some modern cars for a couple reasons. Where a gearbox has gears, each with a fixed gear radio, a CVT smoothly transitions through its gearing range. Variators are used in every just about scooter on the market, with the very rare exception being some manual transmission Vespa’s like the PX, Sprint, PK, and the early Lambretta’s.Ī variator itself is the main driving part of a continually variable transmission (CVT).
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