What does 660 mean in racing?

The 660 foot mark is the halfway point of a quarter-mile track. Your elapsed time is recorded. At some tracks, speed (in miles per hour) is also recorded.

What is 660 in drag racing?

660-Foot Timer

Measures elapsed time at the halfway point of a quarter-mile track. At some tracks, speed (in miles per hour) is also recorded. Some tracks also have timers at 330 and 1,000 foot intervals.

What does 1320 mean in racing?

1320. Slang for the quarter mile (street racing)

What is a 500 light drag racing?

Some classes will use a hybrid tree, known as a . 500 Professional tree, where the delay is . 500 seconds instead of the . 400 seconds used in a standard Professional tree. On the activation of the green light from either style of tree, the drivers are supposed to start the race.

What is a good DA for drag racing?

So there might not be 'one answer' as to what are the best weather conditions as each car might prefer different ones but generally speaking, any time the temps are between 45 and 60 degrees with a barometer reading over 30.00 at a physical altitude of under 300 feet it can be considered decent air.

How do you calculate DA?

Calculating density altitude is done one of two ways—with a chart or an E6B.
...
Find pressure altitude

1. Subtract the current altimeter setting from the standard pressure of 29.92.
2. Multiply by 1,000.
3. If you have a negative number, subtract it from the field elevation. Add a positive number.

What is DA in car racing?

Christmas tree (or "tree") – device at the starting line containing signal lights, used to start a race in addition to showing starting violations. DA – density altitude; a reference to qualities in the air.

Why do drivers do burnouts?

Burnouts can help remove unwanted debris

Performing a burnout can help to remove any foreign matter or unwanted debris that may have collected on the tires before the race, particularly if the vehicle was coming from the pits.

What is the best RT in drag racing?

You want your RT to be at or as close to . 500 as possible. If you react faster than that, you've just red lighted. These figures give you the elapsed times at the 60 foot, 330 foot, 660 foot or eighth mile, and 1,000 foot marks.

How long is a drag strip?

drag racing, form of motor racing that originated in the United States and in which two contestants race from a standing start side by side on a drag strip—a flat, straight course, most commonly ¹/₄ mile (0.4 km) long.

What does et stand for in drag racing?

Car with doors. Elapsed Time (E.T.) The time it takes a vehicle to travel from the starting line to the finish line. Eliminations. When vehicles are raced two at a time, resulting in one winner and one loser.

Is drag race Illegal?

"Drag racing", when referring to motor vehicle/motorcycle speed contests done within a controlled and regulated environment, and adhering to safety standards, is not illegal when sanctioned.

Why is a drag strip 1/4 mile?

Traditionally, a drag strip is 1,320 feet, which equals a quarter-mile. (One mile equals 5,280 feet.) Many classes in NHRA drag racing—actually, all but the Top Fuel and Funny Car classes—still compete on a quarter-mile course.

What is a perfect light in drag racing?

(. 500 is a perfect light on a sportsman tree, . 400 on a Pro tree.) What this really means is that your front tire(s) left the stage beam .

Who invented the drag race?

One could even argue that drag racing was born in Goltry, Okla., in 1913, with the birth of Wally Parks, who nearly four decades later would found drag racing's most successful and influential sanctioning body. Parks' family moved to California in the early 1920s, and Parks had an early interest in cars.

What is a good reaction time on a pro tree?

500 reaction time is perfect. (In the same way, the four tenths delay of the Pro Tree makes a . 400 a perfect light on that one) Now, the reaction timer stops when the car leaves the starting line.

What is trap speed in drag racing?

Trap speed is the velocity or speed of a vehicle at the end of a run or race competition. This web app uses the quarter mile distance or track. Note: This is a rough and quick estimate of engine horsepower.

Why do people do a burnout before a drag race?

Burnout helps warm up the tires for the race and create better traction for the tires on a specific racetrack. The skill with which the burnout is executed can determine whether the racer wins or loses. To produce an effective burnout, racers will drive their car through a light pool of water.

What do street racers use for burnouts?

VHT is what the drags use. If you want extra traction buy some Tracbite and put it on your tires for awhile. This will soften your tires and help out with traction. Tracbite will not clog up with rubber ***** like the VHT does on the surface.

How much does a funny car tire cost?

Thirty-six inches tall, 17.5 inches wide, and weighing 48 pounds apiece, they're part number 2747 in the Goodyear Racing catalog, $917 per tire. Each one is expected to last eight runs, or a bit more than 1.5 miles.

What is a good density altitude?

A “high” density altitude means that air density is reduced, which has an adverse impact on aircraft performance. The published performance criteria in the Pilot's Operating Handbook (POH) are generally based on standard atmospheric conditions at sea level (that is, 59 oF or 15 oC. and 29.92 inches of mercury).

How does DA effect racing?

As a rule of thumb from a racing standpoint: For every 1000 ft. the Da goes up, a normally aspirated bike will typically slow down almost a tenth (actually right around eight hundredths or so = . 08) in the 1/4 mile.

What is the air density right now?

What is the air density right now? At 101.325 kPa (abs) and 15 °C, air has a density of approximately 1.225 kg/m3 (or 0.00237 slug/ft3), about 1/1000 that of water according to ISA (International Standard Atmosphere).