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Drivers race on the apron at Chicagoland Speedway (the area between the white and yellow lines). aero cover See wheel shroud. air jacks Pneumatic cylinders strategically mounted to the frame near the wheels of a racing car, which project downwards to lift the car off the ground during a pit stop to allow for quick tire changes or provide mechanics access to the underside of the car for repairs.
Nitromethane, or "nitro", is a high-performance racing fuel; Acetone is a vaporization additive, mainly used with methanol racing fuel; Butyl rubber (as polyisobutylene succinimide, detergent to prevent fouling of diesel fuel injectors) Ferrous picrate, used in diesel fuel to increase fuel conversion efficiency and reduce emissions
Dirt track racing is a form of motorsport held on clay or dirt surfaced banked oval racetracks. Dirt track racing started in the United States before World War I and became widespread during the 1920s and 1930s using both automobiles and motorcycles, spreading throughout Japan and often running on horse racing tracks.
In the beginning of dirt track racing small numbers of cars would gather at a horse racing oval. [2] [page needed] The first dirt race was held in 1876 in Cranston, Rhode Island and was made up of 8 vehicles, most who were gasoline powered, however the victor was a man named Whiting who had an electric powered vehicle. [2]
0.533 miles (0.858 km) dirt 2000, 2021-2023 2021-First dirt race for NASCAR Cup Series since 1971. California State Fairgrounds Race Track: Sacramento: California: 1 mile (1.6 km) rice hulls / dirt 1907-1970 AAA / USAC Champ Cars (1949-1970) NASCAR Cup Series (1956-1961) Charlotte Speedway: Charlotte: North Carolina: 0.750 miles (1.207 km) clay ...
Use of leaded gasoline in NASCAR; Nitromethane and methanol fuel, used by Top Fuel drag racing; Methanol fuel, formerly used in some open-wheel race cars, like IndyCar Series prior to 2007 and in Top Alcohol drag racing; Ethanol fuel, now being used in the IndyCar Series and NASCAR; Nitrous, used by drag racing vehicles to increase horsepower
Both types of forced-induction cars must adhere to a 2,650 lb minimum weight with driver. Normally aspirated vehicles using nitrous oxide are limited to 960ci and 2,425 lbs (1,100 kg) with the driver. Nitrous cars use high octane racing gasoline as fuel while supercharged and turbo cars use methanol as fuel.
After a race, the top 5 finishers, one other random car, and the first car failing to finish the race not due to an accident will have their cars inspected. Podium cars, a random car, and first car out also have their cars and engines taken by NASCAR for further inspection at the NASCAR Research and Development Center.