THE SMART TRICK OF GEARBOX CVT THAT NO ONE IS DISCUSSING

Between the discs are rollers, which change the ratio and transfer energy from one side to the opposite. Once the rollers' axes are perpendicular to your axis with the discs, the effective diameter is the same to the input discs and also the output discs, leading to a 1:1 generate ratio. For other ratios, the rollers are rotated along the surfaces