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Difference between revisions of "Continuously variable transmission"
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[[File:CVT-01.jpg|thumb|right|CVT 01]] | [[File:CVT-01.jpg|thumb|right|CVT 01]] | ||
CVT is a [[transmission]] that can change seamlessly through an infinite number of effective gear ratios between maximum and minimum values. | |||
CVT is a transmission that can change seamlessly through an infinite number of effective gear ratios between maximum and minimum values. | |||
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When accelerating, the engine at first revs up to its comfortable RPM (revolutions per minute) range and then remains there while acceleration continues as the ratio changes to make wheel RPM faster while engine RPM remains the same. | When accelerating, the engine at first revs up to its comfortable [[RPM]] (revolutions per minute) range and then remains there while acceleration continues as the ratio changes to make wheel RPM faster while engine RPM remains the same. | ||
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The CVT is also, aside from usual lighter weight of the scooter, the reason you’ll get much better fuel economy than the usual motorcycle transmission. The CVT enables the engine to run at its most efficient RPM for a range of vehicle speeds. This is achieved because the driving shaft maintains a constant angular velocity over a range of output velocities. | The CVT is also, aside from usual lighter weight of the [[scooter]], the reason you’ll get much better fuel economy than the usual [[motorcycle]] transmission. The CVT enables the engine to run at its most efficient RPM for a range of vehicle speeds. This is achieved because the driving shaft maintains a constant angular velocity over a range of output velocities. | ||
There’s one challenge the CVT presents versus the standard manual motorcycle transmission –if you’ve got a dead battery you won’t be able to “bump start” your CVT driven motorcycle. Even though scooters are generally equipped with a kick-starter along with its electric ignition, it still won’t help in the case of a truly dead battery. | There’s one challenge the CVT presents versus the standard manual motorcycle transmission –if you’ve got a dead battery you won’t be able to “bump start” your CVT driven motorcycle. Even though scooters are generally equipped with a kick-starter along with its electric ignition, it still won’t help in the case of a truly dead battery. | ||