Manual Futaba CGY750 V 2.0 (page 15 of 27) (English)

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(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 de-

crease the maximum throw. 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

UDDER

YRO

ASIC

ETTING

Push

DATA

+/– key

Push

DATA

+/– key

Push

MODE

+/– key

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 dam-

age the CGY750 or the servo.

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(5) Gyro working mode [default: CMT]

The available choices are CMT, Normal or AVCS. The CMT mode will allow you to select ei-

ther AVCS or Normal mode via the transmitter. In Normal mode the gyro will always operate

in Normal Rate Mode, and when AVCS it will always operate in AVCS Mode. Use the data [+]

or [-] key to select the desired working mode.

Push

DATA

+/– key

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Futaba CGY750 V 2.0 Manual

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