Is the motorcycle chain-driven? What is the service life of the chain?

Bicycles in motorcycles and most straddle bikes are driven by chains. The quality of the chain is different, the use and maintenance are different, and the service life is different.

The good quality chain of ordinary motorcycle is used and maintained properly, generally around 20 thousand kilometers. Timely and correct lubrication and adjustment of the chain will help to prolong the service life of the chain. Oil is enough to lubricate the chain of an ordinary motorcycle. If the chain is stuck by sand, it should be cleaned in time.

Characteristics of motorcycle engine:

(1) The engine is a two-stroke or four-stroke gasoline engine.

(2) Adopt air cooling, including natural air cooling and forced air cooling. The general model adopts natural air cooling, relying on the air blowing through the cylinder head and the radiator on the cylinder liner to take away the heat.

Extended data:

Lubrication system:

The four-stroke engine adopts splash lubrication and pressure lubrication. Two-stroke engines generally adopt a mixed lubrication method in which a certain proportion of QB gasoline engine oil is mixed into gasoline. However, no matter how the engine works, the mixed oil of this lubricating method is supplied with lubricating oil according to the set proportion, which increases the consumption of lubricating oil, causes incomplete combustion, more carbon deposition and exhaust pollution.

The new generation of two-stroke engines all adopt separate lubrication mode, and are equipped with separate lubricating oil tank and oil pump. The oil pump generally adopts reciprocating plunger variable oil supply pump, which is driven by crankshaft gear through worm gear. The oil supply is connected with the carburetor throttle through the throttle handle and control cable, so that the oil supply changes with the engine speed.

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