E.T. Racing Explained
What is a Drag Race?
In basic terms, a drag race is an acceleration contest from a standing start between two vehicles over a measured distance at a specifically designed drag race facility. The accepted standard for that distance is either a quarter-mile or an eighth-mile. These contests are started by means of an electronic device commonly called a "Christmas Tree." Upon leaving the starting line, each contestant activates a timer which is, in turn, stopped when the same vehicle reaches the finish line. The start-to-finish clocking is the vehicle's E.T. (elapsed time), which serves to measure performance and often serves to determine handicaps during competition.
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| As a vehicle approaches the starting line it breaks the first light beam and the "Pre-Stage" light on 'Christmas Tree" is lit. | Driver slowly inches car forward until the second light beam is broken and the "Staged" lights come on. |
By far the most popular form of drag racing is a handicapped form of competition known as "E.T. Bracket Racing." In this form of racing, two vehicles of varying performance potentials can race on a potentially even basis. The anticipated elapsed times for each vehicle are compared, with the slower car receiving a head start equal to the difference of the two. With this system, virtually any two vehicles can be paired in a competitive drag race.
For
Example: Car A has been timed a 17.78, 17.74, and 17.76 seconds
for the quarter-mile, and the driver feels that a "dial-in" of 17.75 is
appropriate. Meanwhile, the driver of car B has recorded elapsed times of
15.27, 15.22 and 15.26 on the same track and he has opted for a "dial-in" of
15.25. Accordingly, car A will get a 2.5-second head start over car B
when the "Christmas Tree" counts down to each car's starting green lights.
If
both vehicles cover the quarter-mile in exactly the predetermined elapsed time,
the win will go to the driver who reacts quickest to the starting signal. That
reaction to the starting signal is called "reaction time." Both lanes are timed
independently of one another, and the clock does not start until the vehicle
actually moves. Because of this, a vehicle may sometimes appear to have a
mathematical advantage in comparative elapsed times but actually lose the race.
This fact makes starting line reflexes extremely important in drag racing!
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| After both cars are staged the Starter activates "Christmas Tree" and three amber lights and one green are sequenced. | Drivers use amber lights as a guide to anticipate the green bulb coming on. Leave too soon and a bright red "foul" shows. |
What is "Break-Out" and/or "Red Light"?