JR Vibe 90 3D - Final Servo Adjustment and Radio Setup

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FINAL SERVO ADJUSTMENT AND RADIO SETUP (CONTINUED)
It will also be necessary to set the correct idle speed of the engine when the
throttle hold function is activated.
This idle value is located within the throttle hold function. This will allow the
engine to remain at idle when practicing autorotations.
6. Gyro Gain Adjustment (All Gyros)
Please refer to your Gyro’s instruction manual for proper gain settings.
Gyro Direction
It will also be necessary to confirm the direction the gyro compensates when the
body of the helicopter is rotated.
To do this, turn the radio system on and suspend the helicopter by the main rotor
head. Next, move the rudder stick to the right and watch the direction that the tail
rotor servo arm travels. Now while watching the tail rotor servo arm, rotate the
body of the helicopter counterclockwise. The servo arm should move in the same
direction as when the rudder stick was moved to the left.
If the arm moves in the opposite direction, reverse the gyro and re-test.
Note: The throttle curve examples shown correspond to
the pitch curve examples show in Step 5 on the
previous page.
40%
Hovering
100%
50%
0% Idle
Power Output
3D Flight Stunt 1
Stick PositionStick Position
Flight Mode 1
B) Throttle Curve Settings
Below are several examples of possible throttle curves during various
flight conditions.
Since throttle curves can vary greatly due to engine and muffler
combinations, it will be necessary to fine tune and adjust these values
during test flights to achieve a constant main rotor rpm.
50°
40°
60°
0% Idle
Power Output
100%
+10°
Flight Mode
N
Low
1/4
1/2
3/4
High
Low 1/4 1/2 3/4 High
40%
100%
50%
0% Idle
Power Output
3D Flight Stunt 2
(Duplicate of #1)
Stick Position
Flight Mode 2
Low 1/4 1/2 3/4 High
Normal Mode
1
2
3
4
1
2
3
4
1
2
3
4