One thing people need to keep in mind is that a CVT in a car works entirely different than a CVT in a tractor - the two have nothing in common except for the ability to provide infinitely variable ratios. The automotive ones are basically a belt drive between variable diameter sheaves. However, a tractor CVT works by combining parallel-path mechanical and hydrostatic drives together with the drive ratio being determined by how fast the hydro portion is rotating. Being that the bulk of the power is till being transferred through the mechanical system the efficiency is on par with a powershift which is much greater than what a pure hydro would provide. The overall system is actually much less complex than a powershift transmission with fewer components.
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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