A snowmobile, also known as a snowmachine, motor sled, motor sledge, skimobile, or snow scooter, is a motorized vehicle designed for winter travel and recreation on snow. It is designed to be operated on snow and ice and does not require a road or trail, but most are driven on open terrain or trails. Snowmobiling is a sport that many people have taken on as a serious hobby. Common brand names in the United States include Arctic Cat, Polaris Inc. and Ski-Doo.

Older snowmobiles could generally accommodate two people; however, most snowmobiles manufactured since the 1990s have been designed to only accommodate one person. Snowmobiles built with the ability to accommodate two people are referred to as "2-up" snowmobiles or "touring" models and make up an extremely small share of the market. Most snowmobiles do not have any enclosures, except for a windshield, and their engines normally drive a continuous track at the rear. Skis at the front provide directional control.


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Early snowmobiles used simple rubber tracks, but modern snowmobiles' tracks are usually made of a Kevlar composite construction. The earliest snowmobiles were powered by readily available industrial four-stroke, air-cooled engines. These would quickly be replaced by lighter and more powerful two-stroke gasoline internal combustion engines and since the mid-2000s four-stroke engines had re-entered the market.

The second half of the 20th century saw the rise of recreational snowmobiling, whose riders are called snowmobilers, sledders, or slednecks. Recreational riding is known as snowcross/racing, trail riding, freestyle, boondocking, ditchbanging and grass drags. In the summertime snowmobilers can drag race on grass, asphalt strips, or even across water (as in snowmobile skipping). Snowmobiles are sometimes modified to compete in long-distance off-road races.

Depending on jurisdiction, there may be penalties for driving outside permitted areas, without an approved helmet, without a driver's license, with an unregistered snowmobile, or while under the influence of alcohol or other substances. There may also be regulations regarding noise and wildlife.

In some jurisdictions, a driver's license is required to operate a snowmobile. A specific snowmobile driver's license is required in, for example, Norway and Sweden. In Finland, a snowmobile driver's license is not required if the driver already has another type of appropriate driver's license (for example car or tractor).

Ossipee, New Hampshire claims to be the home of the first snowmobile. In 1917, Virgil D. White set up to create a patent for his conversion kit that changed the Ford Model T into a "snowmobile". He also copyrighted the term "snowmobile". At the time, the conversion kit was expensive, costing about $395. Virgil White applied his patent in 1918 and created his own snowmobile. In 1922, his conversion kit was on the markets and available only through Ford dealerships.[4]

The challenges of cross-country transportation in the winter led to the invention of the snowmobile, an all-terrain vehicle specifically designed for travel across deep snow where other vehicles foundered.[5] During the 20th century, rapidly evolving designs produced machines that were two-person tracked vehicles powered by gas engines that enabled them to tow a sled or travel, initially at low-to-moderate speeds, depending on snow conditions, terrain and obstacles protruding above the snow like brush and trees. Where early designs had 10 horsepower (7.5 kW) two-stroke engines, there has been a move toward newer style two and four-stroke gasoline engines, some with over 200 hp (150 kW).

The origin of the snowmobile[6][7] is not the work of any one inventor but more a process of advances in engines for the propulsion of vehicles and supporting devices over snow. It parallels the development of the automobile and later aviation, often inventors using the same components for a different use.[citation needed]

Wisconsinites experimented with over-snow vehicles before 1900, experimenting with bicycles equipped with runners and gripping fins; steam-propelled sleighs; and (later) Model T Fords converted with rear tractor treads and skis in front. A patent (554.482) for the Sled-Propeller design, without a model, was submitted on Sept. 5, 1895 by inventors William J. Culman and William B. Follis of Brule, Wisconsin.[8] In the first races held near Three Lakes in 1926, 104 of these "snowbuggies" started. Carl Eliason of Sayner developed the prototype of the modern snowmobile in the 1920s when he mounted a two-cylinder motorcycle engine on a long sled, steered it with skis under the front, and propelled it with single, endless track.[9] Eliason made 40 snowmobiles, patented in 1927.[10] Upon receiving an order for 200 from Finland, he sold his patent to the FWD Company of Clintonville. They made 300 for military use, then transferred the patent to a Canadian subsidiary.

Adolphe Kgresse designed an original caterpillar tracks system, called the Kgresse track, while working for Tsar Nicholas II of Russia between 1906 and 1916. These used a flexible belt rather than interlocking metal segments and could be fitted to a conventional car or truck to turn it into a half-track, suitable for use over soft ground, including snow. Conventional front wheels and steering were used but the wheel could be fitted with skis as seen in the upper right image. He applied it to several cars in the Royal garage including Rolls-Royce cars and Packard trucks. Although this was not a snowmobile, it is an ancestor of the modern concept.

The relatively dry snow conditions of the United States Midwest suited the converted Ford Model Ts and other like vehicles, but they were not suitable for humid snow areas such as southern Quebec and New England. This led Joseph-Armand Bombardier from the small town of Valcourt, Quebec, to invent a different caterpillar track system suitable for all kinds of snow conditions. Bombardier had already made some "metal" tracked vehicles since 1928, but his new revolutionary track traction system (a toothed wheel covered in rubber, and a rubber-and-cotton track that wraps around the back wheels) was his first major invention. He started production of the B-7, an enclosed, seven-passenger snowmobile, in 1937, and introduced the B-12, a twelve-passenger model, in 1942. The B-7 had a V-8 flathead engine from Ford Motor Company. The B-12 had a flathead in line six-cylinder engine from Chrysler industrial, and 2,817 units were produced until 1951. It was used in many applications, such as ambulances, Canada Post vehicles, winter "school buses", forestry machines, and even army vehicles in World War II. Bombardier had always dreamed of a smaller version, more like the size of a motor scooter.

Numerous people had ideas for a smaller personal snowmobile. In 1914, O. M. Erickson and Art Olsen of the P.N. Bushnell company in Aberdeen, South Dakota, built an open two-seater "motor-bob" out of an Indian motorcycle modified with a cowl-cover, side-by-side seating, and a set of sled-runners fore and aft. While it did not have the tracks of a true snowmobile, its appearance was otherwise similar to the modern version and is one of the earliest examples of a personal motorized snow-vehicle.[18]

An odd version of snowmobile is the Swedish Larven, made by the Lenko Company of stersund, from the 1960s until the end of the 1980s. It was a very small and basic design, with just an engine in the rear and a track. The driver sat on it and steered using skis on his feet.[22]

In 1960, Joseph-Armand Bombardier introduced his own snowmobile using an open-cockpit one- or two-person form, similar to the 1957 Polaris Sno Traveler, and started selling it under the brand name Ski-Doo through his company Bombardier Inc. (now manufactured by Bombardier Recreational Products).

Competitors copied and improved his design; in the 1970s there were over a hundred snowmobile manufacturers.[24] From 1970 to 1973, two million machines were sold, peaking at 500,000 sold in 1971.[24] Many of the snowmobile companies were small and the biggest manufacturers were often attempts by motorcycle makers and outboard motor makers to branch off in a new market. Most of these companies went bankrupt or were acquired by larger companies during the 1973 oil crisis and succeeding recessions. Sales rebounded to 260,000 in 1997 but gradually decreased afterward, influenced by warmer winters and the use during all four seasons of small one- or two-person ATVs.

There are two manufacturers of dual-track snowmobiles. One is Alpina and the other is a Russian sled called Buran (Bombardier discontinued manufacturing its dual-track model, the Elite, in 2005).[citation needed]

Alpina manufactures one basic dual-track snowmobile design. In 2002 the Sherpa was introduced and is the model name for the four-stroke machine. Prior to introducing the Sherpa, Alpina offered a two-stroke series designated the Superclass. The four-stroke Sherpa is currently the top machine in production. A new version of the Superclass has been released in 2017, with a lot of innovations and a new four-stroke engine.

The Sherpa and Superclass are designed as working snowmobiles for carrying supplies, pulling cargo sleds, pulling trail grooming implements, carrying several passengers, and negotiating deep snow.

As of 2003[update], the snowmobile market has been shared between the four large North American makers (Bombardier Recreational Products (BRP), Arctic Cat, Yamaha, and Polaris) and some specialized makers like the Quebec-based AD Boivin, manufacturer of the Snow Hawk[36] and the European Alpina snowmobile.[24][37]

Snowmobiles are widely used in arctic territories for travel. However, the tiny Arctic population means a correspondingly small market. Most snowmobiles are sold for recreational purposes in places where snow cover is stable during winter. The number of snowmobiles in Europe and other parts of the world is low. e24fc04721

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