Car detailing and valeting

For an engine or motor to do useful work it is necessary to transfer the power produced, by means of a drive train, to the working implement. Rotational force can be transformed through modifying its speed, torque, or direction of rotation and transmitting the optimum force for the intended work. As with all mechanical devices it is necessary to maintain and sometimes refurbish this transforming or transmitting device through Gearbox repairs.

This part, sometimes called a reducer, is used wherever a machine is required to run at a different output speed than the drive or engine speed. Differences in gear ratios result in changed speed and torque.

By meshing the rotating drive or input gear with an output gear that is of larger size and having more teeth, rotational speed is slowed. Torque is also increased, producing a mechanical advantage. The automobile is one application where this can be seen. Its engine, to run smoothly, must produce many times the rotation per minute than can be used where the wheel meets the road.

Some applications such as large wind turbines will have the opposite requirements. Their structural and design requirements make it necessary that the blades of the turbine turn a slower speed than the several revolutions per minute required for generators to produce electricity. Here the gearbox increases speed.

These transmission devices can often be fairly complex. Multiple output speed choices can be supplied through multiple gears of several differing sizes. The automobile transmission exemplifies this. In order to overcome inertia and first put the car into motion requires that the engine’s rotational energy be slowed and its torque, or mechanical advantage, be increased significantly. An output gear of larger circumference and with more teeth than the input accomplishes this.

As the vehicle begins to travel at more speed and momentum increases, less torque is needed and more speed desired. Using successively smaller output gears results in faster rotation of the wheels. For high cruising speeds an overdrive gear may be available.

When steep hills are encountered the car’s momentum will again be slowed by the increased work demands of overcoming increased gravitational forces. Now it becomes necessary to gear down once again producing more torque, until the hill is climbed. Trucks carrying or pulling heavy loads will have the same demands. Those same trucks climbing hills will need gearing different from that of economy or cruising vehicles.

Some applications demand a change of rotational direction or angle. One example of this is the rotor of a helicopter. A vertical shaft transfers rotational energy from the engine but must drive the rotor, which turns at a right angle to the shaft.

Wear and eventual failure of the gearbox and its components will occur over time, necessitating Gearbox repairs. In that event the causes of failure can be determined by skilled technicians through inspection and analysis of parts. Those damaged parts may be repaired or refurbished. If needed they will be replace with fabricated or manufactured parts. This unit should work exactly the same as a new one, or with some adjustments, possibly with extended life or improved performance.

Get the low down on the different types of gear reducers and gearbox repairs now in our review on common gearbox problems