49
6. Gyro Gain Adjustment (Dual Remote Gain Gyros only)
It will be necessary to adjust the “gain” or compensation of the gyro
to create the correct amount of “holding power” necessary for a solid
neutral tail rotor. The intent of the gyro is to compensate for abrupt
movements, or wind direction changes.
For hovering, it is recommended that you start with the gyro gain at
approximately 80° and continue to increase slightly until the tail of the
helicopter “hunts,” then reduce the value slightly.
This same adjustment will also be necessary to achieve proper
forward flight. Generally, the gyro gain for forward flight will be
approximately 10%–20% less than that of the established hover gain due
to aerodynamic forces present in forward flight. We have recommended a
60% value as a good starting position.
7. Verifying 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.
[GYROS SENS ADJ]
AUX3
0:
1:
2:
∞ 80%
60%
50%
ENTER
SEL
+
–
CL
+
–
CL
+
–
CL
Press SEL to select AUX3 or AUTO GAIN function.
PCM 10 Series Radio with G460T,
G550T, and G5000T Gyros
[GYRO SENS]
RUDD D/R
£Rate:
∞0:
80%
1:
60%
XP8103 with G460T, G550T,
and G5000T Gyros
Set to Rudd
D/R Switch
Please refer to your radio’s instructions for more information.
ger
trv. adj.
+80
%
XP652 with G460T, G550T,
and G5000T Gyros
ger
trv. adj.
-60
%
XP652 with G460T, G550T,
and G5000T Gyros
Change
switch
Position
FINAL SERVO ADJUSTMENT AND RADIO SETUP (CONTINUED)
