Venom Air Corps Night Ranger 3dxl, Pilot'S Handbook Manual

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pushrod in or out on the metal rod. Once adjusted, connect the
pushrods to the swashplate. Make sure to connect to the pivot ball that
is directly above the pushrod. In most cases, one of the three will be
much longer or shorter than the other two, so don’t be alarmed. Check
to see if the swashplate and washout arms are still level. If not, repeat
this step.
7. Make sure that the blade pitch on each blade is at 0
o
pitch. If they
are not, please read below. The goal is to have the proper amount of
positive pitch in Normal Flight Mode, while maintaining a symmetrical
amount of positive and negative pitch in 3D Flight Mode.
BLADE TRACKING & BLADE PITCH
Blade tracking is a crucial component to having good flight
characteristics. If the blades do not track properly (if they do not follow
the same path when they are spinning) they can create vibrations and
instability (Fig. K). The tracking has been set at the factory but may need
some minor adjustments to optimize it.
Check the Blade Tracking:
1. Apply blade tip decals. Choose two different colors.
2. Disconnect the motor lead.
3. Set the cyclic control trims to center on the radio.
4. Turn on the radio and helicopter.
5. Examine the swashplate. The swashplate must be 90
o
square to the
Main Shaft when observed from the front and from the side (Fig. L).
6. Viewing the VNR 3DXL™ from the side, rotate the flybar so that it is
parallel to the tail boom and level to the ground. The flybar must also
be 90
o
square to the Main Shaft when checking the pitch. (Fig. L).
Sight down the length of the blade closest to you.
7. The main rotor blades must be parallel to the flybar and swashplate
(Fig. L).
8. Note the angle (pitch) of the blade. The blade pitch angle must be 0
o
as a starting point (Fig. M).
9. To adjust the blade pitch angle (see Fig. N). NOTE: Adjust the left
pushrod in view which corresponds to the blade facing you.
10. Repeat steps 6 - 9 for the other blade.
Once these steps are completed, you are ready to flight check the
tracking while hovering (hover at waist level). After fine tuning the radio
trims, check the blade tracking and adjust by using the previous steps.
TIP: For more accuracy in tracking the blades, it is recommended to
use a Pitch Gauge.
Fig. K
Incorrect Tracking
Correct Tracking
IV. NORMAL FLIGHT MODE HEAD ADJUSTMENTS (CONT)
Main Blade
Main Shaft
Flybar
Parallel
0º
90º
-10º
0º
+10º
Blade Rotation
Positive
Pitch
Negative
Pitch
Fig. M
Fig. L
Fig. N
Adjusting the Long
Pushrod increases
or decreases pitch.
Turn to the right to
decrease. Turn to
the left to increase.
6
Parallel