In essence, gears are just circles with teeth connecting them. A gear transmits a circular movement among two different shafts by rotating and meshing with An additional gear on another shaft. Gears occur in a number of shapes and sizes, including spur gear, helical gear, bevel gear, and worm gear. https://edwinnpoke.idblogmaker.com/33276153/not-known-details-about-automobile-gearbox