187
Rudder Basic
Rudder Basic
In the
"
Rudder Basic
"
menu, you make the basic setting of the rudder gyro.
"
Rudder Basic
"
screen from the
"
BASIC MENU
"
screen.
WARNING
Do not connect the tail rotor servo to the gyro until the
servo type has been selected. Operating the servo using the
incorrect setting may damage the CGY or the servo.
Do not operate with the linkage connected until the "Srv.
Limit" function correctly sets the servo limit point. If the
servo operates beyond the linkage operating range, there is a
danger of either the servo or helicopter being damaged.
WARNING
The servo type parameter within the CGY must
match the type of servo you are using. Incorrect
settings may damage the CGY or the servo. An
incorrect setting may also result in a loss of control
during flight.
(1) Servo Type
Select the appropriate setting for the tail rotor servo.
Setting: Analog / DG:1520 / DG760
Initial setting: DG:1520
DG 1520: BLS254, BLS257, S9254, S9257
DG 760: BLS276SV, BLS251SB, BLS251, S9256, S9251
(2) Gyro. Dir: Gyro direction
This parameter controls which direction the CGY (yaw axis) will compen-
sate when the helicopter rotates. Hold the tail rotor linkage over the link-
age ball on the servo, pick the helicopter up by the main shaft and rotate
the mechanics counter-clockwise. The CGY should compensate by adding
clockwise rotation pitch to the tail rotor blades. If the CGY compensates by
adding counter-clockwise rotation pitch to the tail rotor blades, then it will
be necessary to reverse the Compensation Direction setting by pressing
the "Gyro Dir".
Setting value: Normal / Reverse Initial value: Normal
(3) Work Mode: Gyro working mode
The available choices are CMT, Normal or AVCS. The CMT mode will allow
you to select either AVCS or Normal mode via the transmitter. In Normal
mode the gyro will always operate in Normal Rate Mode, and when AVCS
is selected, it will always operate in AVCS Mode.
Setting: CMT / Normal / AVCS Initial setting: CMT
(4) GY. Gain: Gyro base gain setting
This parameter sets the base gain of the gyro. This can be used to adjust
the gain % if your actual transmitter gain does not match the gain on the
CGY correctly.
Setting ranges: 0 ~ 150% Initial value: 100%
(5) Srv. Limit: Limit setting
When the CGY is in the "Srv.Limit" parameter mode, the gyro will no lon-
ger operate and the tail servo will always center when the tail rotor stick
is released. Always exit the setup functions before attempting to fly the
model. Before each flight, always ensure that the gyros are operating and
compensating in the correct direction. The Servo Limit parameter within
the CGY is used to set the mechanical limits for the tail rotor servo. To
obtain the best performance it is recommended to set the limit in the CGY
to 100% for both directions and then adjust the servo arm length to set the
mechanical endpoints. After that has been completed, use the servo limit
parameter to make small adjustments that could not be made mechani-
cally. Values between 90% and 110% are considered optimal.
[ Setting method ]
Operate the rudder stick right or left in the direction you want to set. Touch
the button that is lit in green to set the limit. Do the same for the other side.
WARNING
When using the CGY for the first time, or when making mechani-
cal changes involving throw, you must check and set the servo limits
again to prevent binding.
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