These would quickly be replaced by lighter and more powerful two-stroke gasoline internal combustion engines and since the mid-2000s four-stroke engines have re-entered the market. The earliest snowmobiles were powered by readily available industrial four-stroke, air cooled engines. Skis at the front provide directional control.Įarly snowmobiles used simple rubber tracks, but modern snowmobiles' tracks are usually made of a Kevlar composite construction. Snowmobiles do not have any enclosures, except for a windshield, and their engines normally drive a continuous track at the rear. 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. Older snowmobiles could generally accommodate two people however, most snowmobiles manufactured since the 1990s have been designed to only accommodate one person. Snowmobiling is a sport that many people have taken on as a serious hobby. 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. A snowmobile tour at Yellowstone National Park.Ī snowmobile, also known as a Ski-Doo, snowmachine, sled, motor sled, motor sledge, skimobile, or snow scooter, is a motorized vehicle designed for winter travel and recreation on snow.
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