One engine design that has gained widespread admiration is the inline-four engine. It is characterized by four cylinders arranged in a straight line. This configuration offers a balance between power, smoothness, and compactness. Inline-four engines often produce high-revving power and have a linear power delivery, making them popular in sport bikes and high-performance motorcycles. They also tend to be mechanically simple and offer good fuel efficiency.
Another revered engine design is the V-twin configuration. In this design, two cylinders are arranged in a V-shape, typically with a 45 or 90-degree angle between them. V-twin engines are known for their strong torque output, which makes them suitable for cruiser motorcycles. They have a distinctive rumbling sound and provide a unique riding experience. V-twin engines also tend to have a compact size, allowing for a lower center of gravity and better handling.
These are just a couple of examples, and there are numerous other engine designs, such as parallel twins, single-cylinders, and V4 configurations, each with its own advantages and characteristics. Ultimately, the "favorite" engine design depends on personal preference and the intended use of the motorcycle.