Chapter 5 – General Operation
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the user did for the previous one. Make sure to enter the
number of the propeller in the Enter Aircraft ID screen.
8. Finish balancing each propeller (up to four) in the same way
as the user did the first.
NOTE: The user may enter numbers one through nine, but
we recommend using the conventional numbering, that is,
No. 1 being the farthest left engine and Nos. 2, 3, and 4 for
the farthest right engine. Up to four engine balances can
be run concurrently, using the Vibrex 2000 Plus.
5.4.2 Acquiring Balance Readings
Acquire balance readings and measurements, as follows:
1. Do a normal engine start and allow the engine to warm up,
then
On constant-speed propellers, cycle the propeller twice to be
sure the air is purged from the propeller hub.
On fixed-pitch propellers, run the propeller at the maximum
static revolutions per minute (RPM).
2. Operate the propeller at the desired RPM (shown live on the
Vibrex unit’s display).
3. Press START. The Vibrex unit collects IPS-reading and
phase data/measurements. During this process, a temporary
Data Collection screen displays.
NOTE: If, at any time, the user wants to stop collecting
data, press the GO BACK key while the Data Collection
screen displays.
The Vibrex unit then displays a Measurements screen that
displays the acquired balance measurements (see below).
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