A unit analysis method using " contact model between the element of a belt ft ) r continuously variable transmissions and the pulley sheave " and " the model which considered a gap in the bea血 g 「 ' was contrived . And that was made able to predict tooth contact of a gear correctly In the conventional model , pulley and the neighboring parts was modeled with one body easily the new model , slide pulley and fixed pulley wcre divided , and oil pressure was set , thereby it was able to express pulley axial bending same as an actual machine .