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Dirt and grass track bikes have capacities of 250, 350, 500 and in the solo classes and can reach speeds of up to 80 mph (130 km/h) on the straights and with no brakes fitted to the machine. The American Grand National dirt track championship uses motorcycles of up to 750 cc capacities and can reach speeds of up to 130 mph (210 km/h). [1] [2]
Dirt track racing is the single most common form of auto racing in the United States. According to the National Speedway Directory there are over 700 dirt oval tracks in operation in the United States. [citation needed] The composition of the dirt on tracks has an effect on the amount of grip available. On many tracks people will find clay is ...
IMCA Sport Compact is IMCA's entry level class of racecars. They are found at IMCA tracks around the United States. They are found at IMCA tracks around the United States. History
Ice speedway racing includes a motorcycle class which is the equivalent of Speedway on ice. Bikes race anti-clockwise around oval tracks between 260 and 425 metres in length. The race structure and scoring is similar to Speedway. The sport is divided into classes for full-rubber and studded tyres. The studded tyre category involves competitors ...
The oldest continually run dirt quarter midget track east of the Mississippi is the Hulman Mini Speedway, operated since 1958 by the Terre Haute Quarter Midget Association (THQMA) located in Terre Haute, Indiana. On the west coast, the Capitol Quarter Midget Association has operated a dirt track for quarter midgets since 1954.
Dirt track racing is the single most common form of auto racing in the United States. According to the National Speedway Directory, there are over 700 dirt oval tracks in operation in the US. [1] The composition of the dirt on tracks has an effect on the amount of grip available. Many tracks use clay with a specific mixture of dirt.
The 2021 NASCAR Cup Series and Truck Series dirt races at Bristol Motor Speedway will use a format similar to selected dirt track races, such as the Bryan Clauson Classic at Indianapolis or the Lucas Oil Chili Bowl Midget Nationals using heat races and random draws. Four 15 lap qualifying heats where the lineup is set by random draw.
Sprint cars are open-wheel race cars, designed primarily for the purpose of running on short oval, circular dirt or paved tracks. Historically known simply as "big cars," distinguishing them from "midget cars," sprint car racing is popular primarily in the United States and Canada, as well as in Australia, New Zealand, and South Africa.