The "cc" (cubic centimeter) of a bike refers to the engine displacement or the total volume displaced by all the cylinders in the engine. It indicates the size or capacity of the engine and is commonly used as a measure of its power output.
Engine displacement is calculated by multiplying the cross-sectional area of the cylinder bore (the diameter of the cylinder) by the stroke length (the distance the piston travels inside the cylinder). The resulting volume represents the amount of air and fuel mixture that can be drawn into the cylinders during each cycle.
The engine displacement, or cc rating, is often associated with a bike's performance characteristics:
Power Output: In general, a higher engine displacement tends to result in a higher power output. This is because a larger engine can accommodate larger and more powerful combustion events, leading to increased torque and horsepower. Bikes with higher cc ratings are typically capable of producing more power and acceleration.
Torque: Engine displacement influences the torque output of a bike. A larger displacement engine usually generates more torque, which determines the pulling power or low-end acceleration. Bikes with higher cc ratings often exhibit stronger low-end torque, making them better suited for tasks like quick acceleration from a standstill or overtaking at lower speeds.
Top Speed: While engine displacement is a factor in determining a bike's top speed, it is not the sole determining factor. Other elements, such as the engine's design, aerodynamics, and gearing, also contribute to achieving higher speeds. Bikes with larger engine displacements might have the potential to achieve higher top speeds, but this can vary depending on the bike's overall design and intended purpose.
It's important to note that while engine displacement is a significant factor, it does not provide a complete picture of a bike's performance. Other factors, such as the engine's configuration (inline, V, etc.), fueling system, weight, and aerodynamics, play crucial roles as well.
Ultimately, choosing a bike with the appropriate engine displacement depends on your riding preferences, intended usage, and local regulations. Consider factors like power delivery, handling characteristics, fuel efficiency, and your level of riding experience when selecting a motorcycle.