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Reading Time Slips

Time Slip Layout

After each run drivers will receive a time slip that is printed from the track timing system. Track timers measure driver and vehicle performance and determine the winner of a race during elimination rounds.
Every time slip will look similar to this and contain the following information:




Vehicle lane

Car number

Dial: will appear only in elimination rounds, predicted elapsed time
R/T: time (in seconds) between green light illumination and vehicle movement
60': time (in seconds) in which the vehicle moves the first 60' of the track
330': time (in seconds) in which the vehicle moves the first half of the 1/8 mile track
1/8: elapsed time (in seconds) of the run
MPH: vehicle speed at the end of the run

Amount (in seconds) by which the lead car crossed the finish line ahead of the other

A common misconception is that the elapsed time (1/8 on the time slip shown) includes the reaction time (R/T), but it does not. The reaction time clock begins when the green light on the christmas tress is illuminated, and stops when the vehicle moves away from the staged position (measured by photo cells on the track). The elapsed time clock begins when the vehicle moves away from the staged position, and stops when the vehicles crosses the finish line (again measured by photo cells on the track). Click here for an illustration of the entire track timing system.
 
 

Determining a Winner from a Time Slip

For each lane, do the following:
reaction time + (elapsed time - dial in) = total "package"
 
Whichever lane has the lower total package is the winner because that driver & vehicle was the closer of the two to being perfect (perfect would be a perfect reaction time and an elapsed time exactly equal to the dial in). However, if one of the lanes has a negative reaction time (red light) they would automatically lose. If one of the lanes has an elapsed time less than their dial in (a breakout) they would automatically lose. If both lanes have elapsed times less than their dial ins (double breakout), whomever has the elapsed time closer to their dial in would win. If one lane has a red light and the other has a breakout, the one with the red light would lose.
 
 Car # 31 (Winner)  32
 Dial  4.78  4.56
 R/T  .010  .008
 1/8  4.786  4.579
 Package  .010 + (4.786 - 4.78) = .016  .008 + (4.579 - 4.56) = .027
 

An example of a double breakout:
Car # 31 (Winner) 32
Dial 4.78 4.56
R/T .010 .008
1/8 4.776 4.549
Package 4.776 - 4.78 = -.004 4.549 - 4.56 = -.011
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