HyperPAC™ User Manual
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Page 44 of 66
Using your HyperPAC™ At A Race Track
While one of the main reasons the HyperPAC™ was developed was to provide
drag strip and dynamometer test results for those people who do not have access to a
race track or chassis dynamometer, using your HyperPAC™ at the drag strip allows you
to conveniently save all of your run information and review it at a later date. In addition
to the time slip information, you get all of the other information that the HyperPAC™
saves with each run, acceleration times, horsepower and torque readings, and a data
acquisition report for the engine operating conditions recorded during the run.
If you do choose to use the Drag Strip program of your HyperPAC™ at the track,
follow the procedure for creating a new test session, and:
1. Touch STAGE VEHICLE on the HyperPAC™ and stage the vehicle based on
staging lights on the race track’s “Christmas” tree.
2. Once you are properly staged, touch START TREE on the HyperPAC™ and
ignore the HyperPAC™'s "christmas" tree, allowing it to drop to the green light.
Do not allow the vehicle to move or you will start the HyperPAC™ trigger.
3. Watch the race track's "christmas" tree and leave the starting line based upon its
green light. When you finish the run, all of the data in the HyperPAC™ will be
correct, except for the reaction time. If you wish keep track of your reaction times,
use the run notes section to enter the reaction time from your track time slip for
that run.
Note: You have up to one minute after the HyperPAC™ goes green to leave,
before the HyperPAC™ will time-out and abort the run.
Calibrating the HyperPAC™ to the Drag Strip Time Clocks
The HyperPAC™ produces results consistent with the average drag strip
timing system. However, these results can vary slightly from any particular track,
for either or both of two reasons. First, the NHRA & IHRA allow tracks some
latitude when setting up the staging lights and the guard beam. And second,
the true “roll-out” distance is affected by all of the following conditions; tire air
pressure, the amount of tire wear , and slight variations in sidewall construction
and dimensions (for tires of the same size but from different manufacturers). For
these reasons, slightly different results may be observed from track to track, and
from your HyperPAC™ to any particular track.
If you regularly visit a drag strip, the HyperPAC™ contains a track
calibration feature that allows you to calibrate the HyperPAC™ to your local
track’s timing set-up. To do this, you will need to make several consistent runs
and enter the track times into your HyperPAC™. The HyperPAC™ will then
automatically perform the calibration. After this calibration and on all subsequent
runs, elapsed times and speeds displayed on your HyperPAC™ will agree very
closely with the elapsed times and speeds recorded by the track’s timing system.
There may still be a few hundredths difference because the HyperPAC™ always
begins each run with a perfect shallow stage to greater than 1/1000-inch
accuracy. Therefore, “real life” staging at the track will always vary by more than
the HyperPAC™.
