The Top Drag Racing Teams In The World
The Top Drag Racing Teams In The World – Top Fuel is a form of drag racing whose dragsters are the fastest racing cars in the world and the fastest recognized category of drag racing, with racers reaching speeds of 338 miles per hour (544.0 km/h) and finishing 1, 000 feet (304.8 m) in 3.62 seconds.
0 to 100 mph (160.9 km/h) in 0.8 seconds (less than a third of the time it takes the production Porsche 911 Turbo to reach 100 mph (160.9 km/h) in 0.8 seconds)
The Top Drag Racing Teams In The World
And can exceed 297 mph (478.0 km/h) in just 660 feet (201.2 m). This put the driver at an average acceleration of about 4.0 g0 (39 m/s2) and a peak of 5.6 g0 (55 m/s2) throughout the race.
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For speed, this class runs a distance of 1,000 feet (304.8 m), rather than the traditional drag racing distance of four quarters of a mile, or 1,320 feet (402.3 m). The rule was introduced in 2008 by the National Hot Rod Association following the fatal crash of Funny Car driver Scott Kalitta during a race session at Old Bridge Township Raceway Park in Glishtown, New Jersey. A shortening of the distance was used by the FIA at some tracks, and since 2012 it has been the standard Top Fuel distance defined by the FIA. The International Hot Rod Association, which banned Top Fuel in Australia at the time, dropped the 1/4-mile distance in September 2017 after a campaign by Santo Rapisarda, a car owner who often runs NHRA races in the United States. .
Before their race, racers often do a burnout to clean and warm up the tires. Combustion also applies a new layer of rubber to the road surface, improving traction during launch.
At maximum throttle and RPM, the exhaust gases escaping the dragster’s optional headers produce about 900–1, 100 pound-force (4.0–4.9 kN) of downforce. A large air intake produces plenty of force over and behind the rear wheels, peaking at 12,000 pounds (53.4 kN) of force, which propels the car to around 330 mph (531.1 km/h).
Sound at full throttle, may cause physical pain or permanent damage. Before the jump, race announcers often advise spectators to cover or cover their ears. Ears and these headphones are often used for fans in the trance of a Top Fuel evt.
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The most active driver in Top Fuel is Tony Schumacher and the most successful crew chief is Alan Johnson, who was the crew chief in six of Schumacher’s championships, back-to-back titles won by driver Gary Scelzi and was the crew chief. his brother Blaine tire for his professional career.
The first female driver in the Top Fuel category is also the most relevant woman in the world of drag racing, Shirley Muldowney, who won three championships during her career.
As of 2015, NHRA regulations limit fuel composition to a maximum of 90% nitromethane; the remainder is mostly methanol. However, this mixture is not mandatory, and less nitromethane can be used if desired. While nitromethane has a much lower energy (11.2 MJ/kg (1.21 Mcal
/lb)), an engine burning nitromethane can produce 2.4 times more power than burning gasoline. This is possible because, in addition to fuel, a generator needs oxygen to generate power: the stoichiometric ratio of gasoline is 14.7:1 air to gasoline and 1.7:1 air to nitromethane, which it is the opposite of gasoline. It already has oxygen in its molecular structure. For the same amount of air consumed, this means that a diesel can burn 7.6 times more nitromethane than gasoline.
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Nitromethane also has a high latent heat of vaporization, meaning it will absorb considerable heat as it flows, providing an invaluable cooling mechanism. Laminar flame speed and combustion temperature are 0.5 m/s (1.6 ft/s) and 2, 400 °C (4, 350 °F) higher than gasoline, respectively. Power output can be increased by using very rich air-fuel mixtures. This also helps to prevent the prevention, which is often a problem with the use of nitromethane.
Because of the relatively slow burning rate of nitromethane, very rich fuel mixtures usually do not burn completely and some residual nitromethane can escape the exhaust pipe and burn on contact with atmospheric oxygen, burning with a characteristic yellow flame. Additionally, after enough fuel has been burned to use up all available oxygen, nitromethane can burn in atmospheric oxygen, producing hydrogen, which can often burn out of exhaust pipes at night as a bright white flame. On a typical run, a genie can consume between 12 US gallons (45.42 L) and 22.75 US gallons (86.12 L) of fuel during warm-up, ignition, cruising, and quarter-mile travel.
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Like many other motorsport formulas that have originated in the United States, NHRA-sanctioned drag racing places severe restrictions on the configuration of the chassis, sometimes to the detriment of technological progress. In some cases, teams need to use technologies that may be decades old,
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Resulting in cars that may seem substantially less advanced than the average family car. However, while some basic aspects of the engine configuration are heavily restricted, other technologies, such as fuel injection, valve operation, combustion, and vehicle materials and design, are under constant development.
NHRA racing rules limit gin displacement to 500 cubic inches (8.19 L). A 4.1875-inch (106.36 mm) bore with a 4.5-inch (114.30 mm) stroke is the usual bore. Larger bores were introduced to weaken the cylinder block.
The engine used to power a Top Fuel race car is based on a second-generation Chrysler RB Hemi, but specially engineered from specialized parts. It has a basic configuration with two valves per cylinder that are actuated by valves from a ctrally-located camshaft. Gine has hemispherical combustion chambers, 58-degrees inside. angle stem valve; 4.8 inch (121.92 mm) pipe casing.
The block is made from a piece of aluminum. It features printed corrugated iron cylinder liners. There are no water channels in the block, which adds considerable strength and rigidity. The engine is cooled by the incoming air/fuel mixture and oil. Like the original Hemi, the racing cylinder block has a deep bore for strgth. There are five main bearing caps, held together by aircraft-standard grade steel studs, with stronger main studs and side bolts (“cheek-bolting”). There are three certified suppliers of these custom blocks; Keith Black, Brad Anderson, and Alan Johnson.
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The cylinder heads are made from aluminum billets. Therefore, they also lack water jackets and rely on an air/fuel mixture and oil for cooling. Chrysler’s original design of two large valves per cylinder is used. The intake valve is made from solid titanium and the exhaust from Nimonic 80A or similar. Iron chairs are ugly. Beryllium-copper has been tried but its use is limited due to its toxicity. Valve sizes are 2.45 in (62.23 mm) for intake and 1.925 in (48.90 mm) for exhaust. The ports have integrated tubes for the push buttons. The heads are secured to the block with copper gaskets and stainless steel rings. Block head clearance is accomplished with aircraft grade steel studs and stud nuts.
Camshaft key is billet steel, machined from carbon 8620 or S7 hardened tool steel or similar. It runs in five oil pressure lubricated bearing bushes and is driven by gears at the front of the engine. Mechanical piston rods (glass followers) ride on the cam lobes and insert steel rods into steel rocker arms that actuate the valves. The rollers on the inlet and outlet sides are of the roller type. Like glass chaser toys, a steel spindle rotates on a steel slot and the steel stone arms rotate on a pair of hardened tool steel shafts in bronze bushings. The input and output rockers are billet. The dual valve springs are of the coaxial type and are made of titanium. The valve shifters are also made of titanium, as are the rocker covers.
Billet steel crankshafts are used; they all have a so-called 90-degree cross-plane configuration and run in five conventional carrier shells. 180 degree bushings have been tested. Due to the ease of installing an exhaust system with this pulsation, a 180 degree crank can provide extra power in the exhaust manifold. However this does not concern Top Fuel engines which have separate exhaust pipes for each cylinder. A 180-degree mouse is about 10 kg (22 lb) lighter than a 90-degree mouse, but they create a lot of vibration. Such is the power of the upper crankshaft that in one incident, the crankshaft was torn apart during the failure of the crankshaft, and the crank, with all eight connecting rods and pistons, was still attached to the crankcase. . .
The pistons are made of forged aluminum. They have three rings and the aluminum buttons hold a 1,156 in × 3,300 in (29.36 mm × 83.82 mm) steel handle pin. The piston is anodized and Teflon coated to prevent gear reversal during high load operation.