| A motorcycle is a two-wheeled vehicle powered by | | | | independent of Roper. |
| an engine. Motorcycles are one of the cheapest and | | | | In 1894, the Hildebrand & |
| most widespread forms of motorised transport in | | | | Wolfmüller became |
| many parts of the world. | | | | the first motorcycle available for purchase. |
| On a typical motorcycle, the operator sits astride the | | | | In the early period of motorcycle history there were |
| vehicle on a seat, with the hands on a set of | | | | many manufacturers as producers of bicycles |
| handlebars and the feet supported by footpegs. | | | | adapted their designs for the new internal |
| When the bike is at rest, the rider puts one or both | | | | combustion engine. As the engines became more |
| feet on the ground. Engine speed is controlled by | | | | powerful and designs outgrew the bicycle origins, the |
| twisting the throttle on the right handlebar grip with | | | | number of motorcycle producers increased. |
| braking being controlled with a hand lever and foot | | | | Until the First World War, the largest motorcycle |
| pedal. Shifting of gear ratios is controlled by operating | | | | manufacturer was Indian. After that, this honour |
| a foot lever with the clutch being operated by a | | | | went to Harley-Davidson, until 1928 when DKW took |
| hand lever. Steering is accomplished by leaning the | | | | over as the largest manufacturer. BMW motorcycles |
| bike or moving the handlebars. | | | | came on the scene in 1923 with shaft drive and an |
| The inspiration for the earliest dirt bike, and arguably | | | | opposed-twin or "boxer" engine enclosed with the |
| the first motorcycle, was designed and built by the | | | | transmission in a single aluminum housing (photo right). |
| German inventors Gottlieb Daimler and Wilhelm | | | | After the Second World War, the BSA Group |
| Maybach in Bad Cannstatt (since 1905 a city district | | | | purchased Triumph Motorcycles in 1951 to become |
| of Stuttgart) in 1885. The first petroleum-powered | | | | the largest producer of motorcycles in the world |
| vehicle, it was essentially a motorized bicycle, | | | | claiming "one in four". The German NSU was the |
| although the inventors called their invention the | | | | largest manufacturer from 1955 until the 1970s when |
| Reitwagen ("riding car"). They had not set out to | | | | Honda became the largest manufacturer -- a title it |
| create a vehicle form but to build a simple carriage | | | | holds to this day. British manufacturers (Triumph, |
| for the engine, which was the focus of their | | | | BSA, Norton) retained a dominant position in some |
| endeavours. | | | | markets until the rise of the Japanese manufacturers |
| However, if one counts two wheels with steam | | | | (led by Honda) in the late 1960s and early 1970s, who |
| propulsion as being a motorcycle, then the first one | | | | were able to produce designs more quickly, more |
| may have been American. One such machine was | | | | cheaply, and of better quality than their competitors. |
| demonstrated at fairs and circuses in the eastern US | | | | The British manufacturers became defunct as |
| in 1867, built by Sylvester Howard Roper of Roxbury, | | | | mass-market producers. |
| Massachusetts. There is an existing example of a | | | | 1948/1949 German Imme R100Today the Japanese |
| Roper machine dated 1869. It's powered by a | | | | manufacturers, Honda, Kawasaki, Suzuki, and Yamaha |
| charcoal-fired two-cylinder engine, whose connecting | | | | dominate the motorcycle industry, although |
| rods directly drive a crank on the rear wheel. This | | | | Harley-Davidson still maintains a high degree of |
| machine predates the invention of the safety bicycle | | | | popularity in the United States. Recent years have |
| by many years, so its chassis is also based on the | | | | also seen a resurgence in the popularity of many |
| "boneshaker" bike. In 1868, the Frenchman | | | | other brands including BMW, Triumph and Ducati, and |
| Louis-Guillaume Perreaux patented a similar | | | | the emergence of Victory as a second successful |
| steam-powered motorcycle, probably invented | | | | mass-builder of big-twin American cruisers. |