Between the discs are rollers, which differ the ratio and transfer electrical power from one facet to the opposite. When the rollers' axes are perpendicular for the axis on the discs, the effective diameter is the same for the input discs and also the output discs, leading to a 1:one https://riverpqoke.theideasblog.com/34209511/gearbox-cvt-things-to-know-before-you-buy