Clockwise Rotor Correction - Honeywell Vibrex 2000 User Manual

Chapter 5 – General Operation
5.5.3.2
Correct the chart for clockwise-turning rotors (red or CW side of
the Rotor Protractor), using the following conditions:

If the move line misses to the left of the expected point (as
viewed from first point to expected point), rotate the Rotor
Protractor clockwise on the graph the same number of
degrees by which the point missed its intended angle.

If the move line misses to the right of the expected point (as
viewed from first point to expected point), rotate the Rotor
Protractor counter-clockwise the same number of degrees by
which the point missed its intended angle.

If the move line is longer than the distance to the zero line,
decrease the adjustment proportionally.

If the move line is shorter than the distance to the zero line,
increase the adjustment proportionally.
5.5.4
The Vibrex unit uses a photocell system to determine RPM and
provide a one-per-revolution signal to determine out-of-balance
phase of the tail rotor. The user may use the Strobex for tail rotor
track, as explained in Section 5.5.5 "Tail Rotor Track".
CAUTION: Do not use the Strobex for tail rotor phase
measurement.
Use the photocell for tail rotor balance, as follows:
1. Mount the photocell at a convenient location where its beam
can strike some part of the tail rotor.
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Clockwise Rotor Correction

Tail Rotor Balance – Using
Protractor
13841 Rev A
156