34 G-TECH/Pro SS/RR Fanatic Manual
Note:
You must move the cursor over a milestone (from either direction) to update the milestone region. If you move the
cursor near another milestone, but not over it, the milestone region will not be updated.
7.2.3
Horsepower graph
The horsepower graph shows net and total horsepower throughout a run. Net horsepower is what is actually used to
accelerate the vehicle. The total horsepower has air drag and other losses included, so it should approximate the real
engine power at any time.
This is not the optimal graph for analyzing horsepower. It will show artifacts around shift points that are due to factors
other than engine horsepower. It will also show the increasing effect of aerodynamic drag on the vehicle and the
corresponding lower “net horsepower” as the speed increases.
The graph resembles the one shown in Figure 23. Of course the shape of the curve, as well as the numbers and ranges,
will be different for your vehicle.
Figure 23: Horsepower graph
Use
ROLLER
to move cursor. As cursor moves, the horsepower and time values are adjusted to follow the cursor.
Note the “dips” in measured horsepower on the graph. As soon as you push in the clutch to shift, you decelerate (due to
aerodynamic drag), and there is no net horsepower delivered to the wheels.
7.2.4
Braking distance graph
You can use the G-TECH to measure 60-0 MPH braking distance. To measure your vehicle’s 60-0 braking distance:
•
perform an acceleration run as usual (you do not need to perform a full ¼ mile, but make sure you reach at least
60 MPH)
•
when you are done accelerating, brake hard all the way to a stop
Note:
If you do not brake to a complete stop at the end of your run, and wait for the E.T. clock to stop, you will not get a
good 60-0 MPH braking distance measurement.
The 60-0 result screen will be similar to one shown below in Figure 24 but the shape of the curve and displayed values
will look different due to the different driving style and different vehicle.
