How is reaction time measured in drag racing?

The average human reaction time is approximately 0.18 seconds and as a rule of thumb let’s say that each 1000lbs of weight in your car equals 0.1 seconds of vehicle reaction time. So if you car weighs 2800lbs, your vehicle reaction time would be 0.28 seconds.

What is a good reaction time in drag racing?

When both are in place, the starter flips the switch to light the amber ready lights atop the “Christmas Tree.” Exactly four-tenths of a second later the green light comes on and the driver can leave the line (thus . 400 seconds is considered a perfect Reaction Time).

Does reaction time matter in drag racing?

Technically speaking, reaction time doesn’t affect ET. ET is the time it takes your bike to move from the starting line to the finish line. Reaction is the time that it takes from green light until your bike leaves the starting line. Adding those 2 numbers is commonly known as your package for that run.

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What is the best tire pressure for drag racing?

ET Drag and ET Street

Vehicle Weight Tire Size Air Pressure
Under 2,500 lbs. Over 32″ dia. 5 psi and up
2,500 – 3,000 lbs. Under 30″ dia. 10 psi and up
2,500 – 3,000 lbs. 30″ – 33″ dia. 8 psi and up
2,500 – 3,000 lbs. Over 33″ dia. 5.5 psi and up

What is 60 ft in drag racing?


Measures the time it takes the car to cross the first 60 feet of the quarter-mile. This shows you how well the car launches, which affects your elapsed times. Most street-tired cars have 60 foot times around 2 seconds.

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 ET time in drag racing?

The time it takes for the vehicle to go from start to finish is what’s known as an elapsed time, (or e.t.), which measures performance and determines handicaps during competition. At a NHRA sanctioned event, you’ll see two types of drag racing: heads-up and handicap.

Does reaction time affect 1/4 mile?

“does reaction time affect 1/4 mile time?” The answer is, NO! You can leave the starting line perfectly or leave several hours later, your 1/4 mile time will still be the same with everything else being equal.

What is the fastest quarter mile time ever?

Worlds Fastest 1/4 mile ever on dragstrip 3.58 secs @ 386 mph (621.61 km/h)

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How is Drag Racing scored?

Elapsed time is the period from the vehicle leaving the starting line to crossing the finish line. Speed is measured through a speed trap covering the final 66 feet (20 m) to the finish line, indicating average speed of the vehicle in that distance.

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 I get good at drag racing?

If you are going to be stock car racing, make sure you remember safety first, and then use these drag racing tips and techniques:

  1. Look through As Far Ahead As Possible: …
  2. The Burnout: …
  3. Tire Pressure: …
  4. Brake with Your Left Foot: …
  5. Pre Race Prep: …
  6. Don’t Steer, Brake, and Accelerate at the Same Time: …
  7. Visit Roadrunner Performance.


What is good reaction time?

A typical human reaction time is 200 to 300 milliseconds. You can use numerous online tools to test reaction time, like this one. And here’s another fun way you can try with a ruler and a friend: … Put your index finger and thumb slightly apart at the bottom of the ruler, as if you’re about to pinch it.

What does box and no box mean in drag racing?

A delay box is a device that assists in perfecting your reaction time in a drag race, however some drag racers conceal the device and race in a no box class. … A delay box delays the launch of a drag car using an electric signal that holds the trans-brake with hydraulic fluid pressure.

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