In a traditional automatic transmission, the gears are literally gears -- interlocking, toothed wheels that assistance transmit and modify rotary movement and torque. A mix of planetary gears generates all of the various gear ratios that the transmission can create, usually 4 ahead gears and one particular reverse gear. https://gearbox-cvt21864.spintheblog.com/32716959/new-step-by-step-map-for-cvt