In a conventional automatic transmission, the gears are literally gears -- interlocking, toothed wheels that help transmit and modify rotary movement and torque. A combination of planetary gears results in all of the several gear ratios the transmission can make, commonly four forward gears and a single reverse gear. https://cvt97529.bloggip.com/32381932/the-2-minute-rule-for-gearbox-cvt