P.39
0%
100%
0%
100%
0%
100%
-12°
+12°
±0°
+4°
+12°
-5°
-8°
+3°
+10°
Low pitch
Intermediate pitch
High pitch
※ When confirming or adjusting the reference pitch
range, the pitch curve should be at default values.
Reference pitch
-12°
0°
+12°
Hovering
-5°
+4°
+12°
Stunt
-8°
+3°
+10°
3D
-12°
0°
+12°
Rod to adjust the pitch
1 .【Rotor pitch setting】
※ Please refer to the instructions supplied with your FBL control unit.
Measure the pitch of the Main Rotor Blades using the JR digital pitch gauge (No.61796, sold separately).
The intermediate (middle) value should be set to 0° - with the pitch stick in its middle position the pitch reading should
be 0°. If it is not, adjust the length of the rods shown in the following figure to accurately set the pitch to 0°.
Once the intermediate pitch has been adjusted to 0° by rod adjustment, measure the high and low pitch values. It is
presumed that they are almost as described in the table. If they are slightly higher or lower, use the "swash type (mix)"
function to adjust the pitch stroke (swash pitch mix % ). Increase or decrease the pitch percent value as required. In
this case, the high and low pitches cannot be separately adjusted. If the above-mentioned intermediate pitch has been
correctly adjusted, adjusting either the high or low pitch should automatically result in the figures seen in the table. If this
is not the case, change the rod length and the pitch percent value in the swash mix, ignoring the intermediate value, so
that the high and low pitches are properly adjusted.
2 .【Pitch Curve (Transmitter pitch curve adjustment)】
This function allows you to make adjustment freely between specific points as to how much Main Rotor Blade pitch
should be set at a particular pitch (throttle) stick position. This is one of the basic important adjustments of the
helicopter. This adjustment depends on the Main Rotor Blades used and interaction with the throttle curve. To begin
with make adjustment as shown in the following figure, referring also to the table in the previous section. Make fine
adjustments after test flying.
Pitch curve
Stick position
Stick position
Stick position
Rotor pitch
Rotor pitch
Rotor pitch
【Hovering】
【Stunt】
【3D】
SETTING AND ADJUSTMENT OF THE TRANSMITTER
