Pressurized ATF acts over the movable 50 percent from the pulley, transforming its diameter. “Consequently,” claimed Maldonado, “a CVT transmission regularly improvements gear ratios as The 2 movable pulley halves slide over a shaft, although another 50 percent of the pulley remains locked in position.” You might also have read https://cruzzcczw.bloggazza.com/33182007/examine-this-report-on-gearbox-cvt