The contact point starts to slip onto the slender part of the underside tooth, subtracting slightly little bit of velocity from the highest gear to compensate for the increased diameter of contact. The finish result is that although the contact point diameter modifications regularly, the speed stays the identical. So, an involute profile gear tooth produces a constant ratio of rotational velocity. This function is helpful helpful site for machines similar to conveyor methods, during which the locking function can act as a brake for the conveyor when the motor is not turning. Worm gears are additionally used in the Torsen differential, which increases torque for some high-performance cars and trucks. The bent teeth of helical gears means they have to be staggered, with the teeth of the next gear going in the different way so the enamel can mesh.
