The basics of motorbikes

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Release time：

2023-06-06

Horsepower was originally developed by the French and Germans, but as the horse they measured horsepower on was a smaller horse than the average horse, an engine with 50 horsepower could not be imagined as having 50 horsepower to pull a motorbike around, but rather as having 35 horses. The unit of horsepower (ps) was the first symbol used by the Germans and is still used today.

Knowledge of power

What is 1 hp? 1 hp is the amount of force required to pull an object weighing 75 kilograms (kg) up one metre (m) in one second, which is called 1 hp.

rpm is the abbreviation for revolutions per minute of the engine.

What is torque? Torque, also known as torque, is the moment of force that causes the shaft to rotate. The common unit of torque in XXX is kg-m (international unit is Nm).

To better understand the concept of torque, here are a few examples. For example, if a screw is tightened with a driver or spanner, and the length of the driver or spanner is 1 m, a force of 1 kg is applied to one end of the driver or spanner, the screw is tightened with a torque of 1 kg-m. If the length of the driver or spanner is 0.5 m, a force of 2 kg must be applied in order to obtain a torque of 1 kg-m. The reverse is also true, if the driving torque is the same, the further away from the centre of rotation, the less force is generated.

Exhaust volume

How is the exhaust volume calculated?

Bore - the diameter of the cylinder, referred to as the bore.

Stroke - The distance travelled by the piston when it moves from the upper stop (TDC) to the lower stop (BDC) is called the piston stroke, abbreviated as stroke or stroke.

Here is an example of an '03 Honda CBR600RR, engine type: water-cooled four-stroke parallel four-cylinder 16-valve DOHC engine:
Bore (67.0 mm) and stroke (42.5 mm)