Royal Enfield motorcycles are known for their distinct character and the thumping sound produced by their engines. One of the reasons Royal Enfield engines have a relatively low compression ratio is to achieve that classic thumping sound and maintain a smooth power delivery throughout the RPM range.
A lower compression ratio allows the engine to have a longer combustion duration, giving it a distinctive exhaust note and a more relaxed power delivery. This characteristic is often preferred by Royal Enfield enthusiasts who appreciate the nostalgic feel and unique riding experience associated with the brand.
Additionally, a lower compression ratio can contribute to improved durability and reliability, as it reduces the stress on engine components, such as the pistons, connecting rods, and crankshaft. This design choice aligns with Royal Enfield's focus on building motorcycles that can handle varying road conditions and offer a comfortable ride.
It's important to note that different motorcycle manufacturers make design choices based on their desired performance characteristics, target market, and brand identity. The low compression ratio in Royal Enfield engines is a deliberate design decision aimed at achieving a specific riding experience rather than maximizing performance figures.