Futaba CGY750 - Manual (Page 15)

15
(5) Flight mode [default: 3D]
Selects the flight mode. Always try the “Sports” flight mode first and if you determine that the
feel is not aggressive enough or if the pirouette rate is not fast enough then try the “3D” flight
mode. The “Sports” Flight Mode will satisfy most pilots.
The flight mode is changed by pushing the data [+] or [–] key.
(3) Gyro direction [default: Normal]
This parameter controls which direction the CGY750 (yaw axis) will compensate when the
helicopter rotates. Hold the tail rotor linkage over the linkage ball on the servo, pick the
helicopter up by the main shaft and rotate the mechanics counter-clockwise. The CGY750
should compensate by adding clockwise rotation pitch to the tail rotor blades. If the CGY750
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 [+] or [-] data key.
(4) Limit setting [default: 100%, setting range: 50~150%]
When the CGY750 is in the Sv.Limit parameter the gyro will no longer operate and the tail
servo will always center when the tail rotor stick is released.
Always exit setup functions before attempting to fly the model. Before each flight al-
ways ensure that the gyros are operating and compensating in the correct direction.
The Servo Limit parameter within the CGY750 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 CGY750
to 100% for both directions and then adjust the servo arm length to set the mechanical end-
points. After that has been completed use the servo limit parameter to make small adjust-
ments that could not be made mechanically. Values between 90% and 110% are considered
optimal. Navigate to the [RUD.Gyro].Basic
Sv.Limit menu and slowly move the rudder
stick to the left or to the right maximum extent and use the data [+] or [-] key to increase or
decrease the maximum throw respectively. Ensure that the pitch slider does not exceed the
maximum extent of travel and cause binding.
(1) Start display
Use the mode [+] / [-] keys to
navigate the setting menus.
(2) Servo type [default: DG:1520]
Select the appropriate setting for the tail rotor
servo that you are using. Use the data [+] or [-]
key to choose from the following servo types:
DG1520, DG760 or Analog.
DG 760: BLS276SV, BLS251SB, BLS251, S9256, S9251
DG 1520: BLS254, BLS257, S9254, S9257
WARNING
Verify that the tail gyro compensates in the correct direction before flight. If the compen-
sation direction is incorrect the model will pirouette uncontrollably at lift off.
WARNING
Read your servo instruction sheet to de-
termine the proper servo settings. The ser-
vo type parameter within the CGY750 must
match the type of servo you are using.
Incorrect setting may damage the CGY750
or the servo. Incorrect setting may also
result in a loss of control during flight.
WARNING
When using the CGY750 for the first time, or when making mechanical changes involving
throw, you must check and set the servo limits again to prevent binding.
RUD GYRO BASIC MAP
Read and follow step (2) [RUD.Gyro].Ba-
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Navigate to the [RUD.Gyro].Basic menu
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suring no binding is present.
R
UDDER
G
YRO
B
ASIC
S
ETTING
Push DATA
+/– key
Push DATA
+/– key
Push DATA
+/– key
Push MODE
+/– key
T AIL R OTOR G YRO S ET U P AND R UDDER B ASIC S ETTING
Following your transmitter instructions, program your transmitter
as follows:
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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 CGY750 or the servo.
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Pirouette Rate:
Sports
= 540 degrees per second
3D = 720 degrees per second