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Two Top Fuel dragsters side by side during an NHRA event in 2012. Top Fuel is a type of drag racing whose dragsters are the quickest accelerating racing cars in the world and the fastest sanctioned category of drag racing, with the fastest competitors reaching speeds of 341.68 miles per hour (549.9 km/h) and finishing the 1,000 foot (304.8 m) runs in 3.61 seconds.
Nitromethane is used as a fuel in motor racing, particularly drag racing, as well as for radio-controlled model power boats, cars, planes and helicopters. In this context, nitromethane is commonly referred to as "nitro fuel" or simply "nitro", and is the principal ingredient for fuel used in the "Top Fuel" category of drag racing. [14]
A nitro engine generally refers to an engine powered with a fuel that contains some portion (usually between 10% and 40%) of nitromethane mixed with methanol.Nitromethane is a highly combustible substance that is generally only used in very specifically designed engines found in Top Fuel drag racing and in miniature internal combustion engines in radio control, control line and free flight ...
A dragster is a specialized competition automobile used in drag racing. Dragsters, also commonly called "diggers", can be broadly placed in three categories, based on the fuel they use: gasoline, methanol, and nitromethane. They are most commonly single-engined, though twin-engined and quad-engined designs did race in the 1950s and 1960s.
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
In both classes, the cars are either supercharged engines, burning alcohol or can burn nitromethane and be normally aspirated, fuel injected engines. [1] Top Alcohol Dragsters and Funny Cars resemble their nitromethane (Fuel) counterparts, with about half the power of their respective classes.
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
The 25-foot-long Top Fuel dragster can cover the quarter-mile in 4.4 seconds at up to 540 kmph, mostly using a 4130 chrome molly chassis constructed in the USA. They weigh about 1000 kg which makes for a massive power-to-weight ratio. The total finished cost of a Top Fuel dragster is estimated at $500,000.