Chadwick-Helmuth Vibrex 2000 User Manual

Helicopter Rotor Balancing
Vibrex 2000 and Vibrex 2000 Plus User Guide 97
Hughes 369H, 369HS Tail Rotor Photocell
MAKE ADJUSTMENTS AS CALLED FOR ON BALANCE CHART.
PLOT READING FROM BALANCER USING CLOCKING ON PROTRACTOR.
2. ROTATE PROTRACTOR SO PHOTOCELL IS IN LINE WITH AZIMUTH OF PHOTOCELL ON ROTOR.
:45
:15
:30
10:00
:15
:30
:45
ROTOR
COUNTER
(CCW)
CLOCKWISE
PROTRACTOR 13871
CHADWICK HELMUTH CO INC. (818) 575-6161
1:00
PHOTOCELL
12:00
:30
:45
:45
:15
:15
:30
2:00
:15
3:00
:15
:45
:30
4:00
:45
:30
11:00
PLACE PROTRACTOR OVER APPROPRIATE BALANCE CHART FOR AIRCRAFT BEING BALANCED.
8:00
10:00
SUBTRACT FROM
.5
ADD TO
TARGET
PAPER CHART
LAY OVER CHART
1 HOUR
.4
PITCH LINK
WEIGHT
3
4
TARGET
5
SUBTRACT FROM
ADD TO
BLANK
-or-
7:00
6:00
1
2
SUBTRACT FROM
TARGET
BLANK
4:00
-or-
3
ADD TO
5:00
1
2
4
5
3:00
Hughes 369H, 369HS Tail Rotor Strobex
11:00
1.0 IPS
.9 IPS
12:00
.7 IPS
@
10:20
2:00
BLANK
-0-
.1
1:00
SUBTRACT FROM
.5
ADD TO
.3
.4
-or-
TARGET
.2
WEIGHT
TIP
BLANK
ZERO
.2
.3
.1
-or-
BLANK TIP
PITCH BLANK LINK
TARGET TIP
PITCH LINK TARGET
1 HOUR
READING FROM BALANCER
PHOTOCELL RETRO TAPE
INSTRUCTIONS
7:00
4.
3.
1.
9:00
:15
:45
:30
:30
:45
8:00
:15
:45
:30
:15
:45
IMPORTANT - USE THIS SIDE FOR CCW TURNING ROTORS ONLY!
6:00
:30
:30
:15
:45
:45
:15
:15
:30
5:00
9:00
Adjustment
next run
Balance Chart for
before
Run #
Run # Run #
Run # Run #

Chadwick-Helmuth Vibrex 2000 Specifications

General

Brand	Chadwick-Helmuth
Model	Vibrex 2000
Category	Measuring Instruments
Language	English