The majority of motorcycles use wet clutches rather than dry clutches due to several advantages offered by wet clutch systems in terms of performance, durability, and rider comfort. Here are some reasons why wet clutches are commonly found in motorcycles:
Cooling: Wet clutches are immersed in oil, which helps in dissipating heat generated during clutch operation. Motorcycles, especially high-performance ones, often generate significant heat, and a wet clutch system provides better cooling capabilities, allowing the clutch to operate at optimal temperatures.
Durability: The oil in a wet clutch system provides lubrication, reducing wear and friction on clutch components. This leads to increased clutch life and improved durability. The constant presence of oil helps prevent clutch plates from becoming excessively dry, reducing the risk of clutch slippage or damage.
Smooth engagement: Wet clutches offer smoother engagement and better modulation compared to dry clutches. The oil acts as a dampening medium, absorbing shock and vibrations during clutch engagement, resulting in a more controlled and seamless power delivery.
Reduced noise: Wet clutches tend to produce less noise and chatter during operation compared to dry clutches. The oil helps dampen any noise or vibrations generated by the clutch system, leading to a quieter and more refined riding experience.
Compact design: Wet clutches can be more compact than dry clutches, allowing for a smaller overall engine package. This is particularly advantageous in motorcycles where space is limited, such as sport bikes or bikes with tight engine compartments.
While there are certain advantages to using wet clutches, it's important to note that dry clutches also have their merits and are used in specific motorcycle applications. Dry clutches are typically lighter and simpler in design, making them suitable for some high-performance motorcycles or racing applications where weight reduction and quick clutch response are critical. However, for most motorcycles intended for general street use, wet clutches offer a good balance of performance, durability, and rider comfort.