G-Tech Pro Competition, User Manual

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Anal
yzing Runs
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G-TECH / Pro Competition User Guide, Release 3.1
81
Measuring 50-70 MPH, etc.
Suppose you want to measure a vehicle’s acceleration at
highway speeds (sometimes referred to as a “passing test”).
This test is often done in the vehicle’s top gear (5th or 6th
gear in most vehicles) to measure how well the vehicle can
accelerate on the highway without downshifting.
You may also wish to use this feature to measure the same
interval (e.g. 50-70 MPH) in several different gears. For exam-
ple, many vehicles can cover 50-70 MPH in 2nd gear, 3rd
gear, 4th gear, and 5th gear. This measurement will tell you
which single gear is the best choice for this speed range.
Let’s suppose you want to measure your 50-70 MPH time.
This example will show you how to use the G-tech to do it.
Note: You can measure any interval you wish using the pro-
cedure described below -- we have just chosen 40-60 MPH for
this particular example.
2
To view the Speed vs. Time graph, select the menu
choice titled “Speed vs time” and press
:
3
On this graph, notice how the speed (vertical axis)
rises for a while, and then falls again. This is because
the vehicle braked to a complete stop at the end of
the run.
For now (0-40 MPH), we only care about the rising
part of the graph, during acceleration from 0 to 40
MPH.
Use the
keys to move the cursor over the
40 MPH milestone on the rising part of the graph .
The 0-40 MPH time is displayed.