Sprockets are wheels with teeth that can mesh with other sprockets to create machines with varying gear ratios. Gear ratios determine the amount of mechanical power or multiplication created by two gears. Cogwheels allow machines to perform tasks beyond the singular force of people or horses, and can produce high-speed functions with low-speed input. Automotive transmissions use gear multiplication to achieve adequate fuel economy and maintain engine life.
A sprocket is a wheel with teeth or notches machined into its perimeter. The sprocket is capable of meshing with the teeth of another sprocket to create a basic machine. Transmissions, clocks, and many other types of machines that work with the help of gears and mechanical drive assemblies all use gear wheels.
When one cogwheel meshes with another, it creates a machine capable of increasing or decreasing its mechanical power. This ability to shift is known as the gear ratio. The ratio defines the amount of mechanical power or multiplication created by the two gears. The ratio is derived from the gears on each sprocket.
When one gear makes four full revolutions while the other gear in mesh makes only one revolution, it is said to have a 4:1 gear ratio. When discussing drive axle gear ratios in an automobile, if the driveshaft turns the pinion wheel four full revolutions and the ring gear makes the tires make 10 full revolutions, it is said to have a gear ratio of 4: 10.
Cogwheels have helped the world move forward by assisting in the ability to create. The strength of a single person can be increased to the strength of hundreds of with the correct gear ratio of a machine using gear wheels. The cogwheel allows machines to do and perform tasks that would not be possible using the singular force of people or even horses.
The gear wheel also allows a machine to produce high-speed functions with low-speed input by the use of gear ratio multiplication. By choosing the right sized gears, a low input speed can be converted to a high output speed and the user can enjoy the benefits of a powerful fan by very slowly operating a handle.
An automotive transmission is a prime example of gear multiplication. While an automobile is running, the engine stays at a fairly common revolutions per minute (RPM) level. To increase speed, the transmission sprocket system begins shifting gear combinations or shifts gears, and the vehicle speed increases. The transmission keeps changing the order in which the different sets of sprocket combinations interconnect and the vehicle makes all possible gear changes to reach a cruising speed.
The correct gear ratio in the transmission allows the vehicle to operate at highway speeds while remaining at a very low engine speed. This is responsible for achieving adequate fuel economy and maintaining engine life.
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