Gears are mechanical factors that transmit rotation and electrical power from 1 shaft to another, if each shaft possesses properly formed projections (teeth) Similarly spaced close to its circumference this sort of that because it rotates, the successive tooth goes into the Place among the enamel of one other shaft. http://timing-pulley65318.thenerdsblog.com/15185007/rumored-buzz-on-timing-pulley