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Average full-size passenger cars have a drag area of roughly 8 sq ft (0.74 m 2). Reported drag areas range from the 1999 Honda Insight at 5.1 sq ft (0.47 m 2) to the 2003 Hummer H2 at 26.5 sq ft (2.46 m 2). The drag area of a bicycle (and rider) is also in the range of 6.5–7.5 sq ft (0.60–0.70 m 2). [5]
Car and Driver. length of the rollout depends on the diameter of the tire and where the driver chooses to position the car at the start. Although the rollout distance is typically only a foot or so of a quarter-mile, it can affect the elapsed time by as much as 0.3 second, Markus, Frank; Brantley, Brian; Lutz, Cory (2017-02-20).
A dragstrip is a straight, purpose-built racetrack, typically an eighth, ten feet longer than three-sixteenths, or a quarter of a mile long (660/1,000/1320 feet, 201/304.8/402 m), with an additional shutdown area to allow vehicles room to stop after crossing the finish line.
The slower car in the race is given the green light before the faster car by a margin of the difference between their two dial-in times. In principle, if both drivers have equal reaction times and their cars run exactly their posted dial-ins, both cars should cross the finish line at precisely the same time.
Big tire – Car with a set of rear tires taller than 28.5 inches tall and or wider than 12.5 inches of tread. Car may have modifications to the rear frame rails and suspension system to allow the large tires to fit under the car. Compare Small tire. Bottle – nitrous system; also known as the jug. [41] [42]
Delay box is a common slang term used in drag racing to describe an on-board timer which is a transbrake delay timer. A transbrake forces the race car to remain stationary at the starting line, in gear, regardless of how much engine power is applied.
Super Comp (or Quick Rod) is the fastest of the heads-up Super classes (8.90 index).Super Comp is composed primarily of dragsters.Engine, chassis and body modifications are virtually unlimited, though all entries must adhere to NHRA or IHRA safety standards.
For example, a car cruising on a highway at 50 mph (80 km/h) may require only 10 horsepower (7.5 kW) to overcome aerodynamic drag, but that same car at 100 mph (160 km/h) requires 80 hp (60 kW). [18] With a doubling of speeds, the drag/force quadruples per the formula.