- Funny Car
Funny Car is a
drag racingcar class. In the USA, other "professional" classes are Top Fuel, Pro Stock, and Pro Stock Motorcycle. Funny cars have forward-mounted engines and carbon fiberautomotive bodies over the chassis, giving them an appearance vaguely approximating manufacturers' showroom models. The Dodge Chargerand Chevrolet Impalasedans are now commonly used in the National Hot Rod Association ( NHRA). Worldwide, however, many different body styles are used.
The NHRA has strict guidelines for funny cars. Most of the rules relate to the engine. In short, the engines can only be
V-8s at 90 degrees. (The most popular design is loosely based on the Chrysler 426 Hemi.) There can only be two valves per cylinder and superchargers are restricted to a basic Roots type—19 inch(483 mm) rotor case length with a width of 11.25 inches (286 mm). The engine displacementcannot exceed 500 cubic inches (~8.2 L). Only single camshafts are allowed. There are two common bore-stroke combinations: 4.1875 × 4.50 inches (106.4 × 114.3 mm) (called a "3/4 stroker") and 4.25 × 4.375 inches (108.0 × 111.1 mm) (called a "5/8 stroker"). The 3/4 stroker is the most common combination used today and equals 496 CID (8.1 L).
Engine blocks are usually made out of
aluminumbillet. Crankshafts are made from steel forgings. Intake valves are titaniumand of 2.40 inch (61 mm) diameter, while exhaust valves are 1.90 inch (48 mm) diameter made out of Inconel. Every funny car has ballistic blankets covering specific parts of the engine prone to explosion.
Funny car fuel systems are key to their immense power. Most systems will deliver from 500 to 600 psi (3 to 4 MPa) of fuel pressure at as much as 75 U.S. gallons per minute (62 imperial gallons/min; 5 L/s). During a single run (starting, burnout, backing up, staging, 1/4 mile) cars can burn as much as convert|15|U.S.gal|impgal L|lk=on of fuel. The fuel mixture is usually 85–90%
nitromethanewith 10–15% methanol. The ratio of fuel to air can be as high as 1:1. Compression ratios vary from 6:1 to 7:1. The engines in funny cars commonly exhibit varying pistonheights and ratios that are determined by the piston's proximity to the air intake. Funny cars have a fixed gear ratioof 3.20:1 and have a reversing gear,power is transmitted from engine to final drive through a multiple staged clutch which provides progressive incremental lockup as the run proceeds. The rate/degree of lockup is mechanically/pneumatically controlled and pre-set before each run according to various conditions, in particular track surface . Wheelbaseis between 100 and 125 inches (2.54 and 3.18 m). The car must maintain a 3 inch (76 mm) ground clearance.
Horsepower claims vary widely—from 6,978–8,897—but are probably in the 8,000 BHP range. Supercharged, nitromethane-fueled motors of this type derive their extremely high speeds from their
torque, which is estimated at about convert|7000|ft.lbf|N.m|abbr=on. They routinely achieve a 6G acceleration from a standing start.
Many safety rules are in place to protect the driver, spectators, and others. The more visible accoutrements are the twin
parachutes to help stabilize and decelerate the car after crossing the finish line.
During safety evaluations in the wake of the fatal crash of Scott Kalitta on June 21 in Englishtown, N.J., the NHRA has temporally reduced the length of Top Fuel and Funny Car races to 1,000 feet effective July 2, 2008.
For a thorough discussion of highly similar drag racing vehicles, see
Origins and name
The first funny cars were built in the mid-'60s and so-called because the rear wheels had been moved forward on the chassis to improve weight transfer under acceleration, increasing traction on the rear tires, which were oversized compared to stock. Looking at the cars, they didn't quite look stock, hence the name "funny." Many of the older cars are still raced today in the NHRA Heritage Hot Rod Racing Series, including the National Hot Rod Reunion and the California Hot Rod Reunion.
* [http://www.nhra.com NHRA National Hot Rod Association Website]
* [http://www.ihra.com IHRA International Hot Rod Association Website]
Wikimedia Foundation. 2010.
Look at other dictionaries:
funny car — n. a type of racing vehicle used on a drag strip, that resembles a standard automobile except in having large rear tires and a one piece fiberglass body that must be raised for access * * * … Universalium
funny car — n. a type of racing vehicle used on a drag strip, that resembles a standard automobile except in having large rear tires and a one piece fiberglass body that must be raised for access … English World dictionary
funny car — noun : a specialized dragster that has a one piece molded body resembling the body of a mass produced car * * * funny car, a type of drag racing car with the body of a conventional automobile, a supercharged engine, and the driver s seat in the… … Useful english dictionary
funny car — noun A drag racing car class. Generally, funny cars have forward mounted engines and carbon fiber automotive bodies over the chassis that resemble manufacturers showroom models … Wiktionary
funny car — noun Date: 1969 a specialized dragster that has a one piece molded body resembling the body of a mass produced car … New Collegiate Dictionary
funny car — /ˈfʌni ka/ (say funee kah) noun a high performance car designed for drag racing, usually with a lightweight fibreglass replica body and an aerodynamic spoiler … Australian English dictionary
funny car — A car equipped with a powerful engine, used for drag racing. Usually has special body (such as fibreglass) mounted on special lightweight frame and suspension system … Dictionary of automotive terms
Car and Track — was America s first nationally syndicated auto racing and car test television show. Produced by Car and Track Productions, it was hosted by Bud Lindemann, a famous race commentator of the time.It is believed to have run from 1967 to 1975, with 80 … Wikipedia
car — A wheeled vehicle such as an automobile, a section of a train, or a streetcar. The word is an abbreviation of carriage a device to carry people or goods. Also see 49 state car bubble car champ car city car classic car collector car compact car… … Dictionary of automotive terms
Funny People — Leslie Mann, Adam Sandler et Judd Apatow lors de la première du film à Berlin, le 26 août … Wikipédia en Français