http://www.bring-knowledge-to-the-world.com/ Cars and motorcycles of today are equipped with efficient manual or automatic transmissions. This animation explains manual transmissions. Contents 1) Basic principle of manual transmissions 2) 2-speed manual transmission 3) Gear ratio 4) Shifting gears 5) Synchronized manual transmission 6) 4-speed manual transmission 7) Input shaft, countershaft and output shaft 8) Friction clutch 9) H-pattern for manual transmission