Racelogic Ltd
Data Logging
Page
29
Power Runs
Once the vehicle weight has been set, a simple power run can be carried out to give
engine output at the wheels. Put the car into second gear at a low RPM, 2000 RPM or
less.
Press
OK
, the next screen indicates that DriftBox is ready to record the run:
Once the car begins to accelerate, the power is being recorded:
Accelerate to the top of the engine’s rev range, disengage the clutch and coast for a few
seconds. DriftBox will record the amount of power as soon as it recognises deceleration:
Calculating Losses
So as to estimate power output figures at the flywheel, you will need to configure the
amount of loss generated by tyre and air resistance. To do this requires a ‘coast-down’
test. It is recommended that this is carried out in third gear.
With the weight correctly entered, switch from the Power Run screen to the Losses Run
screen using the
▲▼
buttons. The screen will display a similar initial instruction to the
Power Run:
