Perhaps most of us see only on the capacity of the motor power cylinder only. But did you know that Bore x Stroke also affect the characteristics of the motor on the motor? The word "Bore" itself has a meaning that means is a diameter of the piston. While the word "Stroke" means the pistons move. Shall be computed on the Bore Stroke, but strangely overseas mostly in the Bore Stroke calculations. The results of the division in the Stroke Bore when under number 1 has names Stroke Over / Under Square. If the above number 1 called Over Bore / Over Square. When the right to raise one called Square.
Stroke Over / Under Square
This type of motor has a step piston means longer than the width of the piston. This machine has the characteristics such as power and torque at low to medium RPM. This type of motor is suitable for daily motor. A car is a SOHC type. But the weakness of this motor type is the lack of power and torque at high RPM, so it does not produce significant power but produce vibration and engine noise are high.
Over Bore / Over Square
This type of motor has a width greater than the piston pistons move. The characteristics of this engine has more power and torque at medium to high RPM, usually applied in motor sport. This type of machine like this is not suitable for urban areas were jammed.
Square
This type of motor has more power and torque evenly from low RPM, medium, to high. Types of motors are widely used in everyday motorcycle and almost all motorcycle engine can devour all fields from both urban and out of town ... ..
