Center Of Gravity; Control Throws - Horizon Hobby HANGAR 9 Model 12 Viking 120cc Manuel D'utilisation

CENTER OF GRAVITY

An important part of preparing the aircraft for fl ight is properly balancing the model.
1. Attach the wing panels to the fuselage. Make sure to connect the leads from the ailerons to the appropriate leads
from the receiver. Make sure the leads are not exposed outside the fuselage before tightening the wing bolts. Your
model should be fl ight-ready before balancing.
2. The recommended Center of Gravity (CG) location for your model is 2
leading edge of the bottom wing at the wing tip.
3. When balancing your model, make sure it is assembled and ready for fl ight. Support the plane inverted at the
marks made on the bottom wing with a commercially available balancing stand. Make sure the location is
structurally solid before lifting your model. This is the correct balance point for your model. An assistant is highly
recommended when balancing your model.
Balance your model 2 1 / inches (63mm) back from the leading edge of the bottom wing to begin. The
2
Center of Gravity can then be adjusted to your personal preferences as you gain experience with your model.
CAUTION: You must adjust your aircraft's center of
gravity and balance your model properly before attempting fl ights.
Model 12 Viking 120cc
3 / –2 3 / inches (60–70mm) back from the
8 4
2 1 / inches
2
(63mm)
25

CONTROL THROWS

1. Turn on the transmitter and receiver of your model. Check the movement of the rudder using the transmitter.
When the stick is moved to the right, the rudder should also move right. Reverse the direction of the servo at the
transmitter if necessary.
2. Check the movement of the elevator with the radio system. Moving the elevator stick toward the bottom of the
transmitter will make the airplane elevator move up.
3. Check the movement of the ailerons with the radio system. Moving the aileron stick to the right will make the
right aileron move up and the left aileron move down.
4. Use a throw meter to adjust the throw of the elevator, ailerons and rudder. Set the high rates fi rst, then use the
rate functions to set the remaining rates.
Aileron:
3D Rate High Rate
75% Exponential 60% Exponential
Up: 45° 25°
Down: 45° 25°
Elevator:
3D Rate High Rate
70% Exponential 30% Exponential
Up: 45° 15°
Down: 45° 15°
Rudder:
3D Rate High Rate
65% Exponential 65% Exponential
Right: 45° 45°
Left: 45° 45°
These are general guidelines measured from our own fl ight tests. You can experiment with different rates to match
your preferred style of fl ying.
Travel Adjust and Sub-Trims are not listed and should be adjusted according to each individual model and preference.
Always install the control horns 90 degrees to the servo center line. Use sub-trim as a last resort to center the servos.
We highly recommend re-binding the radio system once all of the control throws are set. This will keep the servos from
moving to their endpoints until the transmitter and receiver connect.
Low Rate
55% Exponential
23°
23°
Low Rate
30% Exponential
10°
10°
Low Rate
35% Exponential
25°
25°
EN