Gearboxes have always been considered essential components in the mechanic world, their success is their usefulness. The gearboxes are mechanical drivers made by gears, that bring the movement of a motor to their matched machine, reducing the speed and adapting it to the needs. Gearboxes reduce speed and multiple the delivered force, technically defined torque. The change of a bicycle is the most common example: the cyclist can use the same force to move on flat land or on alpine pass. The convenience of operating great systems, using small motors, makes gearboxes the most rational, reliable and economical way to transmit power.