FUTABA CGY760R User manual

Futaba CGY760R/CGY755 is gyro, 3-axis Stabilization System combining AVCS
gyro and head speed governor in one box designed for ybarless helicopters. Its cut-
ting edge MEMS (Micro Electro Mechanical System) sensor design, ultra high-speed
processing speed, and advanced PID control algorithm put it a league of it's own
ahead of all ahead of all other heading hold gyros in size, weight and performance.
• No part of this manual may be reproduced in any form without prior permission.
• The contents of this manual are subject to change without prior notice.
• This manual has been carefully written. Please write to Futaba if you feel that any corrections
or clarications should be made.
• Futaba is not responsible for the use of this product.
INTRODUCTION
GPB-1
CGY755
CGY760R
GPB-1
Battery
Battery
Setting
Receiving
Receiving
Setting
Receiver・Gyro・Governor
Receiver
Gyro・Governor
If your gyro is CGY755, ignore the description of the receiver
function in this dotted box.
CGY755 has no receiver function.
CGY760R has a receiver function.
This manual is for both CGY760R with receiver
function and CGY755 without receiver function.

Compliance Information Statement (for U.S.A.)
This device, trade name Futaba Corporation, model number CGY760R, complies
with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may
cause undesired operation.
CAUTION: To assure continued FCC compliance
1. Any changes or modications not expressly approved by the grantee of this device
could void the user's authority to operate the equipment.
2. This equipment complies with FCC radiation exposure limits set forth for an un-
controlled environment.
This equipment should be installed and operated with minimum distance 20
cm be-
tween the radiator & your body.
The responsible party of this device compliance is:
Futaba Service Center
2681 Wall Triana Hwy Huntsville, AL 35824, U.S.A.
TEL [phone] or E-mail: [email protected]
Compliance Information Statement (for Canada)
This device complies with Industry Canada license-exempt RSS standard(s). Opera-
tion is subject to the following two conditions: (1) this device may not cause interfer-
ence, and (2) this device must accept any interference, including interference that
may cause undesired operation of the device. This equipment complies with IC radia-
tion exposure limits set forth for an uncontrolled environment. This equipment should
be installed and operated with minimum distance 20
cm between the radiator & your
body.
French: Cet appareil radio est conforme au CNR-210 d’Industrie Canada. L’utilisation
de ce dispositifest autorisée seulement aux deux conditions suivantes : (1) il ne doit
pas produire de brouillage, et (2) l’utilisateur du dispositif doit être prêt à accepter
tout brouillage radioélectrique reçu, même sice brouillage est susceptible de com-
promettre le fonctionnement du dispositif. Cet équipement est conforme aux limites
d’exposition aux rayonnements IC établies pour un environnement non contrôlé.
Cet équipement est conforme aux limites d’exposition aux rayonnements IC établies
pour un environnement non contrôlé. Cet équipement doit être installé et utilisé avec
un minimum de 20 cm de distance entre la source de rayonnement et votre corps.
Declaration of Conformity (for EU)
Hereby, Futaba Corporation declares that the radio equipment type is CGY760R/
CGY755 in compliance with Directive 2014/53/EU. The full text of the EU declara-
tion of conformity is available at the following internet address:
http://www.rc.futaba.co.jp/english/dl/declarations.html

4
TABLE OF CONTENTS
• Introduction -------------------------------------------------------------------------------------- 2
• Warranty and Repair Service (in U.S.A.) -------------------------------------------------- 5
• Features ------------------------------------------------------------------------------------------- 6
• Applicable Systems------------------------------------------------------------------------------ 7
• Contents------------------------------------------------------------------------------------------- 8
• Replacement and Optional Items ----------------------------------------------------------- 10
• Precautions -------------------------------------------------------------------------------------- 11
• Mounting / Part name / Connecting-------------------------------------------------------- 17
Mounting the CGY(CGY760R/CGY755) ------------------------------------------------------ 18
Link Method With Transmitter (FASSTest / T-FHSS)--------------------------------------- 21
Connecting The CGY------------------------------------------------------------------------------- 22
S.BUS Channel Setting ----------------------------------------------------------------------------- 24
Governor Installation------------------------------------------------------------------------------- 24
• First Map ---------------------------------------------------------------------------------------- 28
• Home Screen ------------------------------------------------------------------------------------ 30
• GPB-1 Screen ----------------------------------------------------------------------------------- 33
• BASIC MENU ---------------------------------------------------------------------------------- 39
• SBUS BASIC MENU (S.BUS Basic Setting)---------------------------------------------- 40
• SWH. BASIC MENU (Swash Basic Setting) --------------------------------------------- 45
• FLT. TUNE MENU (Flight Tuning Setting) ---------------------------------------------- 53
• RUD. BASIC MENU (Rudder Gyro Basic Setting)------------------------------------- 57
• GOV. BASIC MENU (Governor Basic Setting)------------------------------------------ 61
Governor Speed Setting ---------------------------------------------------------------------------- 68
Governor Operation -------------------------------------------------------------------------------- 68
• Recommended Gyro Gain Setting ---------------------------------------------------------- 69
• Adjustments During The Test Flight ------------------------------------------------------- 69
• Tips Using The Governor With Electric Models----------------------------------------- 71
• TRANSMITTER Rotor head Gyro GAIN SET-UP------------------------------------- 72
• EXPERT MENU ------------------------------------------------------------------------------- 73
• RUD. EXPERT MENU (Rudder Gyro Expert Setting) -------------------------------- 74
• FLT. EXPERT MENU (Cyclic Gyro Expert Setting) ----------------------------------- 78
• SWH. DETAIL MENU (Swash Detail Setting)------------------------------------------- 81
• GOV. EXPERT MENU (Governor Expert Setting) ------------------------------------- 88
• WRITE Screen---------------------------------------------------------------------------------- 92
• S.BUS SERVO SETTING Screen----------------------------------------------------------- 93
• VIA TRAINER FUNCTION--------------------------------------------------------------- 104
• 3D VIA TRAINER Screen FUNCTION LIST ----------------------------------------- 105
• GPB-1 SOFTWARE UPDATE ------------------------------------------------------------ 106
• MOUNTING OF CGY760R/CGY755 WITH SCREWS------------------------------110
• Specications-----------------------------------------------------------------------------------111

5
Gyro
: Instructions for gyro functions
Governor
: Instructions for governor functions
Technical updates and additional programming examples can be found
at: www.futabausa.com
WARRANTY & REPAIR SERVICE (IN U.S.A.)
If any difculties are encountered while setting up or operating your gyro, please
consult the instruction manual rst. For further assistance you may also refer to your
hobby dealer or contact the Futaba Service Center at the e-mail address, fax or tele-
phone number listed below:
Phone:[phone], FAX:[phone]
E-Mail: [email protected]
If you are unable to resolve the issue, pack the system in its original container with a
note enclosed and a thorough, accurate description of the difculty. Include the fol-
lowing in your note:
• Symptoms (including when the problem occurred)
• System (Transmitter, Receiver, Servos and model numbers)
• Model (Model name)
• Your Name, Address and Telephone number
Send the respective items to the authorized Futaba Service Center Address below:
Futaba Corporation of America
2681 Wall Triana Hwy
Huntsville, AL 35824, U.S.A.

6
FEATURES
• 3-Axis Gyro and Governor in one box.
• High speed operation and extremely low latencies result in greater stability.
• Low prole, small size, and light weight.
• Easy set-up and tuning the gyro and governor program using the GPB-1.
• Settings divided into Basic and Expert menus. The basic setting is for initial setting
and Expert setting is for more advanced settings.
•
Firmware can be updated from a Windows based personal computer when used with the
optional CIU-2 or CIU-3 interface.
• S.BUS 2 compatible.
• CGY
760R also has a combination of receiver functions.
• Gyro section
• Advanced and adaptive PID control loop is utilized.
• Simultaneous control of 3-axes (roll, pitch, yaw).
• Rudder (yaw) section:
• Capable of sensing angular velocity up to +/- 1,000 deg/sec.
• Compatible with 1520
μS Analog (70 Hz), 1520 μS Digital (280 Hz), and 760 μS
Digital (560 Hz) tail rotor servos.
• Feed Forward Option allows the CGY760R/CGY755 to consider other control
functions during operation. This results in more accurate corrections and precise
operation.
• Cutting edge control algorithm provides a consistent pirouette rate, precise op-
eration, and smooth yaw control in any ight condition.
• Aileron, Elevator (roll, pitch) section:
• Developed specically for ybarless helicopters.
• Supports H3-120, H3-140, H3-90, H4-00, and H4-45 swash plate types.
• Governor section
• Advanced and adaptive PID control loop is utilized.
• High speed operation and extremely low latencies provide a more consistent and
accurate operation.
•
Capable of governing head speeds from 700 rpm through 4,000 rpm
• Compatible with 1520 μS Analog (70 Hz) and 1520 μS Digital (280 Hz) throttle
servo types.

7
• Feed Forward Option allows the CGY760R/CGY755 to consider other control
functions during operation. This results in precise governing of the head speed.
• Governor or Revolution Limiter mode selectable.
• Supports gear ratios from 1.00 through 50.00.
• Cutting edge control algorithm provides more consistent RPM governing.
• Revolution sensor is compatible with the GV-1. The CGY760R/CGY755 also
supports an optional back plate revolution sensor and brushless phase sensor.
• Receiver section
• Switch FASSTest - 2.4
GHz system and T-FHSS - 2.4 GHz system using the
Gyro Program Box GPB-1 system.
• By S.BUS 2 system compatibility, it is possible to transmit the battery voltage
information of the receiver and the optional sensor information connected to
the S.BUS 2 port of the receiver.
• Diversity antenna system.
• Other functions
• Maximum rpm memory.
• Cumulative engine operation timer.
• Integration function of engine operation time.
For CGY760R
APPLICABLE SYSTEMS
• CGY760R
• Transmitter : Futaba FASSTest-2.4
GHz, T-FHSS Air-2.4 GHz
• CGY755
• Transmitter & Receiver : Futaba FASSTest-2.4
GHz, T-FHSS Air-2.4 GHz,
FASST MULTI-2.4 GHz with S.BUS/S.BUS2
*FASST 7CH, S-FHSS is non-conforming.

8
CONTENTS
Your CGY760R/CGY755 includes the following components:
Type of set
• CGY760R / GPB-1 / Governor set
• CGY760R / GPB-1 set
• CGY760R
• GPB-1
SET CONTENTS
GPB-1 Program Box
*CGY connection cable
*Transmitter connection cable
*Velcro tape (for attaching to transmitter)
X --- X X
CGY760R
*Mounting Pads (x3)
*Dust Covers (x3)
--- X X X
Governor Sensor
*Sensor Mounting Bracket
*Magnet (x2)
--- --- --- X
Instruction Manual XXXX
Decal XXXX
• CGY755 / GPB-1 / Governor set
• CGY755 / GPB-1 set
• CGY755
SET CONTENTS
GPB-1 Program Box
*CGY connection cable
*Transmitter connection cable
*Velcro tape (for attaching to transmitter)
--- X X
CGY755
*Mounting Pads (x3) *Receiver connection cable
*Dust Covers (x3)
XXX
Governor Sensor
*Sensor Mounting Bracket
*Magnet (x2)
--- --- X
Instruction Manual XXX
Decal XXX
X: supplied ---: not supplied

9
Sensor Mounting Bracket
GPB-1 Gyro Program Box
When setting up the gyro and the governor, connect it to the CGY760R/
CGY755 and use it. Do not install it on the helicopter.
CGY760R : Has receiver function
CGY755 : No receiver function
Magnets (2)
Mounting Pads (3)
Revolution Sensor

10
Futaba PC Interface CIU-2 /CIU-3
Governor Revolution Sensor Set
Mounting Pad (10)
Sensor Mounting Bracket Set
Backplate Sensor BPS-1
Transmitter Connection Cable
It is used to connect the transmitter to the Gyro Program Box GPB-1 and
use the transmitter to transfer the settings of GPB-1 to the CGY760R/
CGY755 wirelessly.
Dust Cover (3)
REPLACEMENT &OPTIONAL ITEMS
CGY Connection Cable : 350 mm
It is used to connect the CGY760R/CGY755 and the Gyro Program Box
GPB-1.
Receiver Connection Cable : 100
mm
It is used to connect the CGY755 and the receiver. *Not included with CGY760R.

11
PRECAUTIONS
Meaning of Special Markings
Pay special attention to safety where indicated by the following marks:
DANGER - Procedures which may lead to dangerous conditions and
cause death/serious injury if not carried out properly.
WARNING - Procedures which may lead to a dangerous condition or
cause death or serious injury to the user if not carried out properly or proce-
dures where the probability of superficial injury or physical damage is high.
CAUTION - Procedures where the possibility of serious injury to the user
is small, but there is a danger of injury, or physical damage, if not carried out
properly.
: Prohibited : Mandatory
WARNING
Failure to follow these safety precautions may result in severe injury to
yourself and others.
• Read through the entire manual before operating this product.
USAGE PRECAUTION:
* When using FASSTest 12 CH mode, analog servo can not be used for 1-6 CH output for conven-
tional system.
* The FASSTest system is not compatible with the conventional FASST system.
CAUTION
Do not mount GPB-1 (Gyro Program Box) on the helicopter.
* It will be damaged by vibration.
ANTENNA INSTALLATION PRECAUTION:
WARNING
Be sure that the two antennas are placed at
90 degrees to each other.
*The CGY760R has two antennas. In order to maximize sig-
nal reception and promote safe modeling Futaba has ad-
opted a diversity antenna system. This allows the receiver
to obtain RF signals on both antennas and fly problem-free.
90˚

12
Do not cut or bundle the receiver antenna wire.
Do not bend the coaxial cable. It causes damage.
To prevent damage to the antenna, please exercise caution. Do not
bend at the base of the antenna. Also, ensure that the unit is not sub-
jected to impact damage.
Keep the antenna as far away from the motor, ESC and other noise
sources as you possibly can.
CARBON FUSELAGE PRECAUTION:
WARNING
You must leave 30 mm at the tip of the antenna fully exposed. The
exposed antenna should be secured so that it can not move around or
back inside of your aircraft.
CONNECTOR INSERTION PRECAUTION:
WARNING
Do not connect the connector by mistake
as shown on the right.
BEFORE EACH FLIGHT:
WARNING
Keep away from conductive materials to avoid short circuits.
If it does not operate properly during operation test before use or
use, stop using it.
Always check the transmitter and receiver battery voltage to ensure
they have enough remaining capacity to complete the flight.
Confirm that the CGY760R/CGY755 is operating in the correct mode.
ABOUT BATTERIES:
WARNING
Newer high-end servos and other radio equipment are capable of
placing large demands on the power systems in use today. When us-
Do not connect either a switch
or battery in this manner.
Do not connect either a switch
or battery in this manner.
DANGERDANGER

13
ing a regulator you must ensure that the regulator is capable of sup-
plying the current demands of the equipment you have selected. In
addition to this make sure the wiring and switch you have selected are
capable of handling high current draws.
*The servo current draw can be up to 50% higher on a flybarless helicopter. Always
ensure your receiver battery is fully charged before each flight.
ABOUT CONNECTOR:
Insert the connector such as sensor, servo, connection cable, bat-
tery etc., surely.
*If it is not securely inserted all the way in, it may come off due to vibration during flight
and there is a danger of falling.
ABOUT WIRING:
Please secure the wiring so that it does not rub against the helicop-
ter frame or other such items that could cause wear. If it does so, we
suggest covering these ares with fuel tubing (or similar) to prevent
damage.
ABOUT VIBRATION ISOLATION AND WATERPROOFING:
The CGY760R/CGY755 is fixed with a dedicated mounting pad with
good condition and the helicopter performs sufficient anti-vibration
measures so as not to receive strong vibration at the time of flight.
Also, if there is a risk of the gyro getting wet, place it in a plastic bag
and take waterproof measures.
ON FLIGHT PRECAUTION:
Always exit programming mode before attempting to fly the model.
Gyro operating precautions:
Gyro
The CGY760R/CGY755 requires 5-10 seconds to initialize when the
power is turned on. Do not move the helicopter and do not move the
tail rotor, aileron and elevator sticks during this initialization or the
gyro may not initialize properly. Once the initialization process has
been completed the swash servos and tail servo will move several
times indicating that the CGY760R/CGY755 is now ready for flight.

14
Verify that the gyros are operating and compensating in the correct
direction before each flight. If the compensation direction is incorrect
on any axis the model will become uncontrollable after takeoff.
The servo type parameters within the CGY760R/CGY755 must match
the type of servo you are using. Incorrect setting may damage the
CGY760R/CGY755 or the servos, possibly resulting in a loss of control
during flight.
Always allow the gyro to adjust to the surrounding environmental
temperature before flight. A large temperature change during use will
cause drift and other operational issues.
If you are switching between Normal Mode and AVCS Mode in flight,
please keep in mind that you must have the gyro re-learn the center
position after making a trim change within the transmitter. To memorize
the new center position simply flip the gain switch on the transmitter
three times between Normal Mode and AVCS Mode (Normal AVCS
Normal AVCS) within one second. The servo will center indicating
that the new center position has been memorized.
When operating the gyro in AVCS Mode, all compensation and revo-
lution mixing must be disabled and any tail rotor or swash offsets for
flight modes must be disabled.
Do not drop the CGY760R/CGY755 onto a hard surface or subject
the CGY760R/CGY755 sensor to a strong shock as this may damage
the sensor.
Verify that the gyro is operating in the desired mode.
When the CGY760R/CGY755 is operated in AVCS mode the tail rotor
or swash plate servos will not center when tail rotor, aileron or rudder
stick is released. This is normal operation for AVCS mode. The servos
may also move to the extent while the model is being carried out to the
flight line. Before take off, you must visually center the tail rotor pitch
slider and level the swash plate by using the transmitter control sticks.
You can also center the servos by moving the tail rotor stick full left,

15
then full right, back to full left and then allow the stick to center within
one second; the same method applies for aileron and elevator servos.
WARNING
Never turn off the CGY760R/CGY755 while the GX (gyro) LED is
blinking green at high speed (about 5/sec).
*If the power is turned off while high-speed blinking, a data error will occur and all data
will be initialized. It is very dangerous to fly as it is.
Governor operating precautions:
Governor
When the throttle servo is connected to the CGY760R/CGY755, the
battery fail-safe function within the CGY760R/CGY755 must be setup
and enabled.
Throttle fail safe function (transmitter setting): Use the fail safe func-
tion for the channel that turns the governor on and off to set the fail
safe position to the point at which the governor is turned off. With this
setting, when the system enters the fail safe state, the governor will be
turned off, and the receiver throttle signal (fail safe position preset) will
be output directly.
When using the condition hold function on the transmitter, always
set the throttle servo maximum operating point to less than the point
at which the governor is activated. If this is not done the governor
may activate while in condition hold.
While preparing for flight or starting the engine, always ensure the
throttle remains below the governor activation point and do not select
any flight modes that may activate the governor.
If you prefer to activate the governor while the model is still on the
ground, always ensure that you have at least -1 degrees of pitch in the
model before activating the governor. This negative pitch is neces-
sary to prevent an unexpected lift off as the governor activates and the
head speed increases to the desired RPM.

16
Be sure to set the autorotation condition to the OFF side with the
governor ON /OFF switch function.
Periodically check the rpm sensor output to ensure proper governor
operation. Due to the high level of vibration and centrifugal forces the
magnet may come loose or the sensor alignment may change. Every
10th flight verify that the magnet and sensor are properly mounted.
If abnormality such as vibration etc., is recognized on the aircraft
side during operation, be prepared to turn off the governor immedi-
ately.
MACHINE MAINTENANCE:
WARNING
Even though the CGY760R/CGY755 is a high performance gyro and
governor, it will be necessary to ensure that the helicopter mechanics
are also in optimum operating condition. Please use the guidelines
below and address all issues before installing and flying the CGY.
• The CGY must be used with a rigid tail rotor drive system. Any modern
torque tube or belt drive system should be adequate. Do not attempt to fly
the CGY using a wire driven tail rotor system.
• Always ensure the drive gears, torque tube, pulleys, belt, bearings and
shafts are in proper working condition. If any of these items are damaged
or worn they must be replaced.
• The linkage rod, tail rotor bell crank, pitch slider and tail rotor grips must
operate without friction to obtain the best performance from the CGY. Bind-
ing in the tail rotor control linkage will decrease the performance of the
CGY gyro and this may also shorten the servo lifespan. Please take the
time now to ensure the tail rotor system on your helicopter is working cor-
rectly and without friction or binding.
• Vibration will affect the CGY’s overall performance. All rotating compo-
nents on the helicopter should be balanced to minimize vibrations in flight.
Ensure that your engine or electric motor is running smoothly and that all
vibrations have been addressed before installing and test flying the CGY.

17
MOUNTING / PART NAMES / CONNECTING
Mount on a model using the attached mounting pad and mount it at the center posi-
tion of model gyro mount so that it is exactly parallel to the roll and pitch axis of the
aircraft.
*The CGY760R/CGY755 should be mounted on a rigid platform, at least 6 in. [152 mm] away
from a Nitro Engine. It is not necessary to mount the gyro near the main shaft of the model
but it is very important that the mounting area chosen is rigid. Please refer to your model
manufacturer’s instructions for recommended mounting locations.
*Test t the gyro sensor, ensuring that the sensor is in alignment with the model on the roll and
pitch axis. The cable from the gyro sensor must exit toward the front or the rear of the model
since this is the pitch axis. Any misalignment will cause a loss of performance.
Mounting angle
• The bottom of the CGY760R/CGY755 Gyro Sensor
must be perpendicular to the main shaft.
•The roll axis must be parallel to the tail boom and
the pitch axis must be perpendicular to the side
frame.
Control axis
• Elevator (Pitch) axis
• Rudder (Yaw) axis
• Aileron (Roll) axis

18
AIL ----------N
ELE---------R
RUD -------- N
AIL ----------R
ELE---------N
RUD -------- N
AIL ----------N
ELE---------N
RUD -------- R
AIL ----------R
ELE---------R
RUD -------- N
AIL ----------N
ELE---------N
RUD -------- N
AIL ----------R
ELE---------R
RUD -------- N
AIL ----------N
ELE---------R
RUD -------- R
AIL ----------R
ELE---------N
RUD -------- R
AIL ----------R
ELE---------N
RUD -------- R
AIL ----------N
ELE---------N
RUD -------- N
AIL ----------R
ELE---------R
RUD -------- N
AIL ----------N
ELE---------R
RUD -------- R
Mounting The CGY
The CGY760R/CGY755 can be mounted in the orientation shown below unless it is installed so
that the roll and pitch detection axis are aligned with the model. However, if there is a deviation
of , equal to, or greater than 1/2 degrees, performance will degrade. In this step, please pay special
attention to ensure optimum ight performance. Refer to the installation example below and select
the gyro mounting direction with "Gyro Set Dir"of the "SWH BASIC" menu.
*The surface with the "CGY" mark in the gure is the top (LED) side of the CGY.
*This is when the reverse function of each axis of the transmitter is initialized.
Gyro Set Dir--- 1
Gyro Set Dir--- 2
Gyro Set Dir--- 3
CGY755 has no antenna

19
Gyro Set Dir--- 4
Gyro Set Dir--- 5
Gyro Set Dir--- 6
AIL ----------R
ELE---------R
RUD -------- R
AIL ----------R
ELE---------R
RUD -------- R
AIL ----------N
ELE---------N
RUD -------- N
AIL ----------N
ELE---------N
RUD -------- R
AIL ----------R
ELE---------N
RUD -------- N
AIL ----------N
ELE---------R
RUD -------- N
AIL ----------R
ELE---------N
RUD -------- R
AIL ----------N
ELE---------N
RUD -------- R
AIL ----------N
ELE---------R
RUD -------- R
AIL ----------R
ELE---------R
RUD -------- R
*Depending on the type of mounting plate,
it is also possible to mount as shown in
the figure.
*Depending on the type of mounting plate,
it is also possible to mount as shown in
the figure.
It is necessary to set the motion direction of each gyro by "AGy.Dir", "EGy.
Dir"of "SWH. BASIC"menu (page 50) and "Gyro.Dir"of "RUD BASIC"menu
(page 58).
AIL - Aileron (Roll) axis / ELE - Elevator (Pitch) axis / RUD - Rudder (Yaw) axis
N --- Normal / R --- Reverse
AIL ----------R
ELE---------N
RUD -------- N
AIL ----------N
ELE---------R
RUD -------- N

20
*Make sure that the cable connection to the main body is not too tight. The excess
will account for some exibility in the model without causing stress/wear on the
cable. Roughly 1.5 in. of cable slack is preferable for best performance.
*Please install the CGY760R/CGY755 as it is in the center (vertical direction and
horizontal direction) of the tape without cutting the attached mount pad. This tape
is designed to effectively absorb the vibration from the model.
*Clean the oil on the bottom of the CGY760R/CGY755 and the machine mounting
part with a solvent cleaner or the like.
*The CGY760R/CGY755 is also designed to be screwed to the gyro mount. For sug-
gested mounting methods, please refer to page 110 of this manual.
The CGY Troubleshooting Tips
If any issues are noted during ight (such as drifting, inconsistent hold or inconsistent
control rates) then please review the following troubleshooting recommendations.
1. Always verify that the tail rotor and swash plate mechanisms operate, and that the
drive system is in proper working order.
2. Electromagnetic interference could be causing the problem. If you feel everything is
set up correctly and that the model is vibration free, then consider moving the gyro
sensor to a new location away from servos, ESC, and drive motors.
3. Vibrations will decrease the performance of all gyro systems. Even though the CGY
gyro sensor is the most vibration resistant gyro sensor available, eliminating vibra-
tions will always improve performance. The CGY gyro sensor performs best when
the sensor is mounted rigidly to the airframe. It is highly recommended to avoid us-
ing soft foam pads as this may allow the gyro to bounce around on the roll and pitch
axis, causing instabilities and possible loss of control during flight so that the roll and
pitch sensing axis are in alignment with the model. Any misalignments over 1/2 of a
degree will cause a loss in performance. Please take extra care in this step to en-
sure the optimum flight performance.
Using The CGY With An Electric Model
DANGER
It is necessary to remove the pinion gear from the electric motor or
disconnect the motor from the ESC before powering the model up for
setup or bench testing. Electric motors are extremely powerful and
capable of delivering the power instantly, causing injury to yourself,
others, or the surroundings.

21
WARNING
Do not perform the linking procedure while the motor’s main wire con-
nected or the engine is operating as it may result in serious injury.
When the linking is complete, please cycle the receiver power
and ensure the receiver is properly linked to the transmitter.
Please power up your system in this order. Transmitter first, fol-
lowed by the receiver.
If the CGY760R was previously linked to another transmitter,
make sure that transmitter is not operating while linking the receiv-
er to the new transmitter.
Once the ESC is connected to the CGY, you need to complete all necessary transmit-
ter settings (ATV, EPA, REV, etc.) according to ESC instructions. Please refer to page
71 of this manual for further suggestions on the use of the governor of CGY760R/
CGY755 and the electric model.
Link Method With Transmitter (FASSTest / T-FHSS)
1. Connect the CGY760R and GPB-1 and set the same mode set in as the transmitter
linking the CGY760R communication mode on the "Receiver" screen. (See page 36)
2. Keep the transmitter and receiver close to each other and turn on the receiver with
the transmitter in the link mode.
3. After powering on the receiver, please allow for approximately two seconds for the
binding/linking to occur.
4. The LED indication on the receiver will change from the red blinking light to a solid
green. This indicates that the linking is successful. This usually occurs in approxi-
mately one second.
* Refer to the transmitters instruction manual for complete details on how to place
the transmitter into the linking mode.
* If there are many T-FHSS or FASSTest systems in use when attempting to link the
transmitter to the receiver, it might require more time to do so.
Additionally, if another modeler in close proximity is attempting to link their units
simultaneously, it could also cause difficulties as the receiver might inadvertently
link to the other transmitter. Always confirm that the receiver responds to the in-
put from the desired transmitter.
* If the System Type of the transmitter is changed, the receiver will need to be re-
linked to the transmitter. For example, if the transmitter is changed from T-FHSS
to FASSTest, it will be necessary to perform the linking procedure once again.
For CGY760R