Between the discs are rollers, which range the ratio and transfer power from a person side to the other. When the rollers' axes are perpendicular to your axis with the discs, the helpful diameter is the same for your enter discs plus the output discs, causing a one:one travel ratio. https://lorenzotxxvr.ttblogs.com/13377562/the-ultimate-guide-to-gearbox-cvt