Motorcycle

A motorcycle is a motor vehicle that typically features two wheels, though some versions, known as trikes, use three wheels.

Riders steer these vehicles using handlebars and sit upon a saddle-style seat. Because their designs vary so much, motorcycles serve many different purposes. Some are built for long-distance travel or daily commuting. Others are specialized for sport racing or off-road riding on dirt.

Beyond simple transport, motorcycling includes social activities like joining clubs or attending large rallies.

Modern motorcycles are complex machines built with specific engineering standards. Most mass-produced models use a frame made of steel or aluminum to provide structure.

The front wheel is usually held in place by telescopic forks. To stop the vehicle, most modern designs utilize disc brakes. The power comes from a petrol-powered engine, which typically contains between one and four cylinders. Some advanced engines may have up to eight cylinders. This engine sends power to the rear wheel through a chain, a belt, or a driveshaft. Riders manage the engine's power using a manual five- or six-speed sequential transmission.

Motorcycles are generally categorized into three major functional types. Street bikes are designed for paved roads and include varieties like cruisers, sportbikes, and scooters. Off-road motorcycles are built for dirt-oriented racing, such as motocross, and are usually not street-legal. Finally, dual-purpose machines, often called dual-sport motorcycles, offer a middle ground. These are designed to handle off-road terrain while including features that make them comfortable and legal for street use. Each specific configuration creates a different riding posture for the user.

The history of the motorcycle began with intense experimentation in the late 19th century. While steam-powered versions like the Michaux-Perreaux velocipede existed in the 1860s, the internal combustion engine changed everything. In 1885, Gottlieb Daimler and Wilhelm Maybach built the Reitwagen in Germany.

This "riding car" was actually a testbed for their new engine. It was unique because it used two outrigger wheels to stay upright during turns. Another early design was the Butler Petrol Cycle from 1884 in England. This three-wheeled vehicle used a liquid-cooled engine and a float-fed carburetor. However, Edward Butler could not find the financial backing to make it a success.

By 1894, the industry moved toward mass production with the Hildebrand & Wolfmüller.

This was the first series production motorcycle and the first to be called a "motorcycle." Following this, companies like the Excelsior Motor Company in England and the Orient-Aster in the United States began manufacturing. As engines grew more powerful, many early inventors transitioned from bicycles to motorcycles and eventually to automobiles. By the outbreak of World War I, the Indian company had become the world's largest manufacturer, producing over 20,000 bikes annually.

Warfare and racing have also shaped motorcycle development. During World War I, motorcycles replaced horses for military messengers and reconnaissance. The Triumph Model H, introduced in 1915, became a famous military tool known as the "Trusty Triumph."

One of the most significant achievements in vehicle history is the 1958 Honda Super Cub. It became the biggest-selling vehicle ever, reaching 60 million units produced by April 2008. In many regions, smaller capacity motorcycles are also vital for transport, with companies like Hero MotoCorp leading the way.