Once all assemblies have been completed, please review the following
suggestions before attempting initial flights.
•
Review the instruction book and confirm that all assembly steps have
been completed thoroughly.
•
Check to verify that the tail rotor assembly rotates in the correct
direction (see the diagram below).
•
Check to insure that all servos are operating smoothly and in the
correct direction. Also verify that there is no binding in the control rods
and that each servo horn is secured with a servo horn mounting screw.
•
Verify that the gyro is operational and compensating in the correct
direction (detailed in Step 8, page 42).
•
Make sure that both the transmitter and receiver have been fully
charged (refer to your radio system instructions for proper charging
procedures).
•
Check to insure that the throttle is working properly and in the correct
direction.
50
FINAL PRE-FLIGHT CHECK
Correct Main/Tail Rotor Rotation Direction
BLADE TRACKING IDENTIFICATION
A:
Use two different blade tracking tape colors (e.g., black and red) at
the tip of each main rotor blade.
B:
Use the same color blade tracking tape located at different positions
on each rotor blade.
Note:
Adding additional blade tracking tape to the rotor blades at this stage
will make it necessary to re-static balance the main rotor blades.
Blade Labeling for Tracking Purposes
BLADE TRACKING ADJUSTMENT
Blade “tracking” is an adjustment to the main rotor blade pitch that must be
accomplished during the initial test flights.
Although the blade pitch angle in each blade may appear equal, it is still possible
for a set of main rotor blades to run “out of track”, making adjustment necessary.
Main rotor blades that are out of track with one another can cause vibration,
instability, and a loss of power due to additional drag.
On the initial flight, it will be necessary to increase the blade speed to just before
lift-off RPM and view the rotor disc at eye level from a safe distance
(approximately 15 to 20 feet).
Note which blade is running low (by colored tracking tape) and increase the pitch
of the low blade one turn of the ball link at a time until each blade runs in track
(on the same plane).
Please refer to the diagrams below to identify the different tracking situations, as
well as several methods to mark each rotor blade for tracking identification.
Incorrect
Out of Track
Correct
In Track
Caution: Be sure to maintain a safe distance from the helicopter
(15 to 20 feet) when tracking main rotor blades.
Adjustment is Necessary
Adjustment is NOT Necessary
A
Red
Black
B
Red
Black
Rotate the Main Rotor counter clockwise (backward)
and note the rotation of the Tail Rotor.
Summary of Contents for ERGO .32
Page 66: ...Heli Division Revised 3 4 97...
