motorcycle chains and sprockets

Chain final-drive systems are by far the most common. In this system, a sprocket installed to the result shaft (i.e., the shaft in the transmitting) is linked to a sprocket attached to the rear wheel of the motorcycle by a steel chain. When the transmitting turns the smaller front sprocket, power is definitely transmitted along the chain to the bigger rear sprocket, which then turns the rear wheel. This kind of transmission system in automobile should be lubricated and modified, and the chain stretches and the sprockets use, requiring periodic replacements.

Belt drives
Belt drives are an alternative to chain drives. Early motorcycles frequently used leather belts, that could be tensioned to provide traction using a spring-loaded pulley and hand lever. Natural leather belts often slipped, especially in wet weather, therefore they were abandoned for other materials and designs. By the 1980s, improvements in components made belt final-drive transmission system in automobile viable again. Today’s belts are made from cogged rubber and operate quite similar way as steel chains. Unlike metal chains, they don’t require lubrication or cleaning solvents.

Shaft final-drive
Shaft final-drives are occasionally used. This transmission system in automobile transmits power to the back wheel via a drive shaft. Shaft drives are popular because they are practical and don’t need as much maintenance as chain-based systems. Nevertheless, shaft drives are heavier and sometimes cause unwanted motion, known as shaft jacking, in the trunk of the motorcycle. The other components that make a motorcycle a motorcycle are portion of the chassis.
Advantages and Disadvantages
The major advantages of shaft-drive are lower maintenance and running costs, and cleanliness. Chain-drive bikes need their chains adjusting frequently and they could be costly to replace when they wear out.
They want lubricating often, especially in bad weather, which can be messy and inconvenient. And chain lube adds to the running costs.
Shaft-drive systems are completely enclosed and are unaffected by the weather and only require periodic oil changes.

The disadvantages of shaft-drive are that it is a lot heavier than a chain and absorbs more of the engine’s power before it reaches the rear wheel

Compared to a Chain system

A shaft-drive may also change the actions of the rear suspension – when the throttle is opened and closed quickly the bike can rise and squat since the shaft is trying to “climb” the cog on the trunk wheel.

Power Transmission

The chain drive system is made up of two sprockets, one on the gearbox and one on the trunk wheel, that are connected by a chain.
In a shaft-driven transmission system in automobile, a shaft connects a gear inside the gearbox to some other gear in the hub on the rear wheel.
When the engine is sparked, power is transferred along the chain or shaft to the rear wheel, and the bike techniques forward. Either system is commonly known as “final drive,” since it is definitely the last group of components employed to deliver power to the rear wheel.

Some producers, notably Harley Davidson, have used belt drives on some of their model line-ups. BMW, Kawasaki, and Suzuki also have experimented with the belt drive program.