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INSTRUCTION MANUAL

1. Futaba S9256 Digital Hi Speed FUTM0226 560HZ 760uS Futaba BLS251 Brushless Heli Servo FUTM0521 560HZ 760uS REPLACEMENT amp OPTIONAL ITEMS Futaba PC Interface CIU 2 FUTM0951 Extension 200 mm Extension 350 mm Extension 55 mm Extension 80 mm Extension 130 mm Mounting Pad 1x22x22 mm 10 CONNECTING THE CGY750 OLED Display e Displays menus parame ters and status information 1 750 E OI 2 3 Flybarless Control Gyro H SET RSET DATA Edit Keys 4 e Used when setting data e Use the included plastic ad 5 justment screwdriver to press the buttons This diagram shows the various con nections between the CGY750 and receiver servo or sensors If the governor and limiter functions are disabled when using the Gyro THR mode then the throttle signal is sent directly to the TH E2 connection on the CGY750 In this case you may connect the throttle servo to the appropriate channel on the receiver or to the CGY TH E2 connector When the swash mode is set to H4 xx mode the TH terminal is changed to 2nd elevator output In this case the governor function is inhibited 6 7 8 CONNECTING THE CGY750 1 Gyro Sensor e Connect the gyro sensor Insert the sensor connector until it is firmly locked 2 Rsen Revolution sensor e Connect the speed sensor 3 S Bus e Connect to the S BUS output of the receiver with the supplied extens
2. Select the mounting method so that the sensor does not touch the frame or other parts of the helicopter Temporarily mount the sensor and select the magnet mounting position as Li Install the sensor to the sensor stay using the accessory screws and washers Li Tighten the sensor stay together with the en gine using the engine mount screw Sensor adjustment Lj Adjust the sensor position to obtain a sen sor output of at least 60 in the Revolution sensor testing menu within the Governor Basic Setting section earlier in this manual Sensor Magnet Center of sensor is offset MOUNTING THE MAGNET AND SENSOR LJ The center of the sensor is different from the center of the sensor case so be careful when mounting the sensor If the display is less than 60 when the magnet is directly below the sensor bring the sensor closer to the magnet so that the 60 or more is displayed The magnet and sensor gap criteria is approximately 1 to 2mm If a sensor output is not obtained even when the sensor is brought close to the magnet the magnet and sensor center positions may have changed LJ Complete assembly of the sensor by securely tightening the screws that were temporarily tightened LJ Recheck the sensor output FUSELAGE SETTING PRECAUTIONS Throttle servo linkage precautions To effectively use the governor observe the fol lowing precautions when connecting the servo linkage
3. key for one second and the basic menu will be displayed 1 Start display ELE Gyro D Expert Use the mode or mode keys to navigate the menu 2 Exponential EXP AVCR HAAN OR 10 default 40 FLT Mode 3 600 700 ranges 100 100 This parameter sets the feel of the ELE cyclic control around center Decreasing the number will result in a softer feel and increasing the num ber sill result in a more aggressive feel Adjust to suit your preference The ELE EXP functions within your transmitter can also be used to make this adjustment 3 Control delay in ELE DI1In AE 2 n default 10 FLT Mode 3 600 700 ranges 0 20 ELEVATOR Gyro EXPERT SETTING This parameter sets the delay as you move the stick from neutral toward forward and aft cyclic Larger values will result in a smoother feel Use the data or key to adjust the value 4 Control delay out ELE Dout AE 2 n default 10 FLT Mode 3 600 700 ranges 0 20 This parameter sets the delay when the stick is re turned back to the neutral position Larger values result in a smoother feel Use the data or key to adjust the value 5 Stop delay 120 default 120 ranges 100 400 This parameter is used to adjust the aggressive ness of the stop Larger values will delay the stop resulting in less bounce Use the data or key to adjust the value 6 AVCS damping AVCS Dmp 98 defau
4. The available options are CMT Normal or AVCS The CMT mode will allow you to select either AVCS or Normal mode by using the gyro gain channel The Normal mode will always operate in Normal Rate Mode and AVCS will always operate in AVCS Mode Use the data or key to select the desired working mode Swash Basic SETTING The SWASHset Basic menu contains all of the functions necessary to set up the swash plate servos and to set up all swash plate mixing functions Push MODE p R 1 Start display SWASHSet EKHM Use the mode keys to navigate the setting menus k SHT eNSWASHTy eNSWASHTY P 120 B4 H3 140 MERE SWASHTYP H3 140 WSWASHTy P Confirmation screen H4 00 lt SWASHT YPRESWASHTYP Neonat Mena cas 2 Swash type default H3 120 The available options are H3 120 H3 140 H3 90 H4 00 H4 45 and Standard Push ing the Data key once will show the next swash plate type and a is shown request ing confirmation of the change If the Data Set key is pressed again within one second the new swash plate type is selected and the 2 confirmation will disappear If no confirma tion is made within one second the display will revert back to the prior swash plate type and no change will be made Z WARNING All of the swash plate parameters are reset when the swash plate type is changed Please proceed through the entire setup
5. aggressive and is intended for beginners sport scale and even some F3C pilots Flight mode 3 is considered average and is good for intermediate and 3D pilots who are not very aggressive Flight mode 5 is intended for advanced pilots who like an aggressive feel This is a personal preference option and it is recommended to test fly using flight mode 2 initially Available Flight Mode Presets 1 Least aggressive good for beginners through F3C pilots 2 Average sport and 3D flight 3 Intermediate sport and 3D flight 4 Fairly aggressive 5 Extremely aggressive Swash Basic SETTING AIL Rev AIL Rev DERM Reverse 6 Aileron servo reverse default Normal This setting is used to set the operational direc tion for the Aileron CCPM servo The easiest way to set up the CGY750 is to observe which direction each servo needs to move when the collective stick is moved towards positive col lective pitch If the servo is moving the wrong direction then press the data or key to reverse that specific servo within the GY750 Once the collective is operating in the correct direction check the cyclic controls If the cyclic controls operate in the wrong direction reverse the Swash AFR for that function within the CGY750 f Normal R 7 Elevator servo reverse default Normal This setting is used to set the operational direc tion for the Elevator CCPM servo The easiest way to set up the CGY750 is to obse
6. and rotate the me chanics counter clockwise The CGY750 should compensate by adding clockwise rotation pitch to the tail rotor blades If the CGY750 compen sates 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 A WARNING Verify that the tail gyro compensates in the correct direction before flight If the compensa tion direction is incorrect the model will pirou ette uncontrollably at a very high rate t RupDDER Gyro Basic SETTING 4 Limit setting default 100 setting range 50 150 When the CGY750 is in the Sv Limit param eter 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 attempt ing 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 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 endpoints 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 Gy
7. axis for operation Push MODE POIRE OAN ELE Gyro Basic K key Use the mode keys to navigate the setting menus ELE Wir ELE Wir Normal Mg Reverse 2 Gyro direction default Normal This parameter controls which direction the CGY750 pitch axis will compensate when the helicopter pitches forward or backward Pick the helicopter up and rotate the nose of the helicop ter downward The CGY750 should compensate by adding aft cyclic to the swash plate If the CGY750 compensates in the wrong direction then it will be necessary to reverse the Elevator Compensation Direction setting by pressing the or data key once Z WARNING Verify that the CGY750 compensates in the correct direction before flight If the compen sation direction is incorrect the model will flip uncontrollably at a very high rate ELEVATOR Gyro Basic SETTING EGn 100 Gm f 70 3 Gyro gain default 100 ranges 0 120 The top line shows the Elevator Gyro Base Gain and the bottom line shows the actual working gain as set within the transmitter If the elevator Gain Channel is set to INH within the CGY750 S Bus gt Basic setting menu then the remote transmitter gain adjustment is not available and the actual working gain is set by using data or keys within this setting menu Wrk ModeNWr k ModeNWr k Mode Zas Era E i 4 Gyro working mode default CMT Selects the gyro working mode
8. how long the engine has been running This is a cumulative timer and the value is maintained in memory To reset the timer simply press the data Home SCREEN or key for more than one second and the timer will reset back to 0 3 OLED display options default Saver OLED MD OLED MD Saver Light When the Saver option is selected the display will dim after 60 seconds of inactivity Once a button is pressed on the CGY750 controller box the OLED will switch back to full brightness The Saver option helps to conserve power and extend the life of the dis play When the Light option is selected the display will remain at full brightness at all times 4 Operation mode default Gyro Gov GyrotGov Gyrot THREGyrotH4 This selects the operating mode of the CGY750 Z WARNING If the operating mode has been changed then the CGY750 must be reset by powering down and then powering back up Gyro Gov Both the gyros and the governor are op erational Gyro THR The gyro is operational and the gov ernor is disabled The throttle channel from the receiver 1s passed through to the TH E2 port on the CGY750 Gyro H4 Must be selected when a H4 xx swash plate type is selected This disables the governor Home SCREEN and throttle servo output and the TH E2 port on the CGY750 is now the second Elevator E2 servo output 1 Roll rate maximum display Roll Max lt ie Ma Md sS Displays the ma
9. is only available for H4 swash mode SwasH ExPERT SETTING 11 Linkage compensation aileron SWerp AIL BE O default 0 ranges 0 100 This adjusts the linkage compensation of the aile ron control influenced to pitch and elevator direc tion There are 4 point settings left and right on pitch high and low 12 Compensation direction of the aileron CreaA Dir CreaA Dir Plus Minus default plus This selects the direction of the aileron compensa tion The direction is changed by pushing the Data or key Set the direction of interaction to be smaller 13 Linkage compensation elevator SWer ELE BE O default 0 ranges 0 100 This adjusts the linkage compensation of the elevator control influenced to pitch and aileron direction There are 4 point settings up and down on pitch high and low 14 Compensation direction of the elevator CeE Dir CpeE Dir default plus SwasH ExPERT SETTING This selects the direction of the elevator compen sation The direction is changed by pushing the Data or key Set the direction of interaction to be smaller 15 Speed compensation Q default 50 H3 120 0 except H3 120 ranges 0 100 This parameter adjusts the speed of the pitch and aileron servos at the elevator operation Adjust ments to their interaction should be minimal 16 Swash rotation SWASHRot 0 deg default 0 deg ranges 90 90 deg This parameter is used
10. lack of movement Some helicopters may have a tendency to resonate shake during spool up Always leave the helicopter on the ground until this resonance or shaking goes away If this issue continues it is recommended to try some rubber skid stops or take off from a softer surface such as grass Vibrations contribute to this ground resonance Verify that everything on your model is balanced correctly W hen the CGY750 is used with a ESC or BEC and a power switch is not used there is a possibility that the intermittent connection as you connect the flight battery may cause the CGY750 initialization to fail Always ensure that the gyro has initialize properly by verifying that the gyros are compensating as the helicopter is moved It is recommended to use a power switch on the power supply line to avoid this possibility Trim flight A trim flight should be performed on a new setup or when making setup changes to the mechanical adjustments on the helicopter 1 Verify that the AIL and ELE gyros are set to ADJUSTMENTS DURING THE TEST FLIGHT 50 gain and the Normal operating mode Take the model off into a hover and use the transmitter trim tabs to trim the model during flight 2 Once the model is trimmed out land the model and shut the engine off Move the gyro gain switch from Normal to AVCS mode 3 times in a second Make sure the neutral positions for both aileron and elevator are memorized If your gyro gain swit
11. loop material route the servo leads and extensions Make sure the wires are not rubbing against metal or carbon fiber which may damage the wires S Bus channel setting Since the S Bus protocol uses a single wire to transmit all channel information to the CGY750 it is necessary to assign each channel number 1 CONNECTING THE CGY750 through 16 a function such as aileron pitch collective gain ail gain ele gain rpm gv on off within the CGY750 control box The default CGY750 S Bus channel assignments should work properly with all Futaba transmitters if you ex perience any problems please refer to the S Bus section of the manual to set verify each channel number for each function LUIf your transmitter does not offer enough channels to operate all of the functions it is possible to operate the CGY750 without the GV On Off Ail Gain and Ele Gain channels connected When any these functions are not used it is necessary to set the channel number to INH within the CGY750 S Bus menu to disable the function and use the setting value inside the GY750 menu instead When the GV On Off channel is not used the governor on off control is handled by the Stick Switch function When the remote Ail or Ele Gain channels are not used the operating mode NOR AVCS and gain value can be set in the ap propriate AIL ELE Basic menu option by using the Data keys when the function is displayed Using the CGY750 with a electric h
12. mode the servos will not re center when the control stick is released If you need to center the servo during setup or before takeoff you can move the appropriate control stick to its full extent left amp right or up amp down twice and allow the control stick to return to center within a one second period of time then servo for that axis will return to its center position For example if you move the tail rotor stick full left full right full left full right and allow it to come back to center within one second then the display will change to show and the tail rotor servo will center Return servo to center position When using the AVCS operating mode and if trim changes have been made on any axis then the neu tral position must be read and memorized by the CGY750 To do this simply change the operating mode twice within one second for example Normal AVCS Normal AVCS and the display will change to to indicate that the current stick position has been memorized as the new neutral posi tion He Oe He ie K K K K R44 S VK Read and memorize the current neutral position Home SCREEN 3 Gyro gain This indicates the current gyro gain for the axis noted in the Axis Indicator position 4 Operating condition LO This indicates whether the governor is operating ON or OFF RUDA100 ghg Sve 5 Yaw rate comp QUID This indicates that the Governor yaw feed forward func
13. 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 gov ernor 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 5 degrees of pitch in the model before activating the governor This is necessary to prevent an unexpected lift off as the governor activates and the head speed increases to the desired RPM 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 Verify that the magnet and sensor are properly mounted every 10th flight WARRANTY amp REPAIR SERVICE IN U S A If any difficulties are encountered while setting up or operating your CGY750 please consult the instruction manual first For further assistance you may also refer to your hobby dealer or contact the Futaba Service Center at the web site fax or tele phone number listed below www futaba rc com or www hobbyservices com Fax 217 398 7721 Tel 217 398 0007 If you are unable to resolve the issue pack the system in its original container with a note en closed and a thorough acc
14. operating side Sensor Magnet This is the side at which the displayed value increases in the Revolution sensor testing menu within the Governor Basic Setting section earlier in this manual Install the mag net with this side facing the sensor Mark this side of the magnet with a felt tip pen MOUNTING THE MAGNET AND SENSOR Cooling fan modification LJ Drill a hole in the fan at the magnet mount ing position Make the hole about 4 1mm in diameter and 1 5 to 1 7mm deep J Embed the magnet in this hole in the direc tion in which an output is obtained Use epoxy adhesive that cures in 30 minutes or longer Do not use epoxies that contain metal such as JB Weld Cement the magnet to the cooling fan so that the magnet is level with this side of the cooling fan Magnet LJIf the cooling fan is unbalanced and vibrates etc balance it by mounting the spare magnet to the opposite side of the cooling fan in the opposite polarity so that it does not output a signal Sensor mounting The sensor mounting method depends on the heli copter and engine L Mount the sensor to the sensor stay Tempo rary assembly Q Drill a hole in the fan cover at the part cor responding to the sensor so that the distance _MOounTINGTHE MAGNET AND SENSOR between the sensor and magnet can be made to 2mm Q Tighten the sensor stay together with the engine mounting mane 1 Temporary assembly Lj
15. 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 then full right back to full left and then allow the stick to center within one second similarly for aileron and eleva tor servos Do not drop the CGY750 sensor onto a hard surface or subject the CGY750 sensor to a strong shock as this may damage the sensor Always use the supplied mounting pads or the Futaba replacement mounting pads available from your local hobby dealer Governor operating precautions Ca When the throttle servo is connected to the CGY750 the battery failsafe function within the CGY750 must be setup and enabled Throttle fail safe function transmitter setting Use the fail safe function 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 en ters the fail safe state the governor will be turned off and the receiver throttle signal fail safe posi tion preset will be output directly When using the condition hold function on the PRECAUTIONS transmitter always set the throttle servo maxi mum
16. the heli Pushing data or key the mode is changed 12 Data reset RESET RESET RESET ECE Gyro This resets all of the rudder gyro parameters back to the default values Press the data key once and Exec is shown as a confirmation Press the data key again to confirm the operation and all of the gyro parameters will be reset SwasH ExPERT SETTING The expert menu contains settings for pilots look ing to achieve the absolute best performance from their gyro To enter the expert menu navigate to the Basic menu press and hold the mode key for one second and the menu will change from the Basic to Expert To exit the expert menu press and hold the mode key for one second and the basic menu will be displayed 1 Start display SWASHSet S Expert Use the data and keys to navigate through the menu 2 PIT AIL mixing rate PITSAIL A 100 default 100 ranges 30 150 This adjusts the pitch to aileron mixing rate The pitch up and down rates can both be adjusted indi vidually 3 PIT ELE mixing rate PIT ELE ABBE le default 100 ranges 30 150 This adjusts the pitch to elevator mixing rate The pitch up and down rates can both be adjusted indi vidually SwasH EXPERT SETTING 4 PIT ELE2 mixing rate PITSELE2 a 100 default 100 ranges 30 150 This adjusts the pitch to 2nd elevator mixing rate The pitch up and down rates can both be a
17. to improve tail stop motion Use the data or RUDDER Gyro EXPERT SETTING key to adjust the value 22 Gyro data reset RESET RESET RESET Gyro Exec D This resets all of the rudder gyro parameters back to the default values Press the data key once and Exec is shown as a confirmation Press the data key again to confirm the operation and all of the gyro parameters will be reset AILERON Gyro EXPERT SETTING The expert menu contains settings for pilots look ing to achieve the absolute best performance from their gyro To enter the expert menu navigate to the Basic menu press and hold the mode key for one second and the menu will change from the Basic to Expert To exit the expert menu press and hold the mode key for one second and the basic menu will be displayed 1 Start display AIL Gyro E Expert Use the mode or keys to navigate through the menus 2 Exponential EXP AVCI 2 1 NUR d default 40 FLT Mode 3 600 700 ranges 10 100 This parameter sets the feel of the AIL cyclic con trol around center Decreasing the number will result in a softer feel and increasing the number will result in a more aggressive feel Adjust to suit your preference The AIL EXP functions within your transmitter can also be used to make this adjustment 3 Control delay in AIL D1lIn AE 2 n AILERON Gyro EXPERT SETTING default 7 FLT Mode 3 600 700 ran
18. to adjust the control phas ing Use the data or keys to make adjust ments 17 Pitch zero setting Pit Zero 1520 uS default 1520 uS This parameter sets the pitch zero point of CGY750 Move the pitch stick to the zero pitch Push data or key The zero pitch signal is memorized to CGY750 The display shows marked at the setting point SwasH EXPERT SETTING 18 Pitch low setting 71939 US default 1940 uS This parameter sets the minimum pitch point of CGY750 Move the pitch stick to minimum pitch Push datat or key The minimum pitch signal is memorized to CGY750 The display shows marked at the setting point 19 Pitch high setting 1226 US default 1100 uS This parameter sets the maximum pitch point of CGY750 Move the pitch stick to maximum pitch Push data or key The maximum pitch signal is memorized to CGY750 The display shows marked at the setting point 20 Data reset RESET h RESET RESET HSE 220 This resets all of the Swash plate parameters back to the default values Press the data key once and Exec is shown as a confirmation Press the data key again to confirm the operation and all of the gyro parameters will be reset GOVERNOR EXPERT SETTING This sets the details of the governor function for the expert modeler Push the mode or key for more than one second on the Governor Basic menu display to get into the Governor Exp
19. Futaba Fly barless Control Gyro CO Y 5S0 INSTRUCTION MANUAL 1M23N24902 TABLE OF CONTENTS e Precautions 3 e Warranty and Repair Service in U S A 8 e Introduction 9 e Features 9 e Contents 11 e Specifications 14 e Recommended Servos 15 e Replacement and Optional Items 15 e Connecting the CGY750 16 e Mechanics Preparation 21 e Opening Screen 23 e Home Screen 24 e Warning Display 30 e Setting Menus 32 e Rudder Gyro Basic Setting 34 e Aileron Gyro Basic Setting 39 e Elevator Gyro Basic Setting 41 e Swash Basic Setting 43 e Gyro Sensor Installation 50 e Swash Servo Installation and Setup 53 e Aileron Elevator Gyro Setup 58 e Tail Rotor Servo Installation and Setup 61 e Before Flight Checklist 64 e Adjustments During the Test Flight 65 e Recommended Gyro Gain Settings 68 e Using Normal Mode 69 e Governor Basic Setting 70 e Mounting the Magnet and Sensor 78 e Fuselage Setting Precautions 82
20. IST Lj Always verify that the transmitter and Re ceiver batteries are fully charged Check the gyro mounting tape and ensure that it is in good condition Make sure the gyro is firmly mounted to the helicopter Q Verify that the gyro wiring has some slack in it and all wires are clear of the main frame LJ Power on the transmitter and receiver Allow the gyro to initialize Lj Check and verify that the servo type parame ter is set correctly for the tail rotor and cyclic servos Q Verify that all of the servo arm screws are installed J Ensure that the cyclic and tail rotor servos do not bind when moved to the full extent of the throw L Verify that the gyro is operating in the correct mode AVCS or Normal and that the gains are properly set L Test all controls and verify that they move in the correct direction Q Verify that the gyro compensates in the cor rect direction for all three axis before flight If the compensation direction is incorrect the model will roll flip or pirouette uncontrol lably at a very high rate ADJUSTMENTS DURING THE TEST FLIGHT Z WARNING Always level the swash plate using the cyclic stick before applying throttle and spooling the main rotor blades up During takeoff small cor rections may be necessary If you make large corrections while the helicopter is on the ground it may tip over since the helicopter is firmly on the ground and the gyros are overcompensating due to the
21. LQ Make the servo operating range as wide as possible Make the throw of the transmitter EPA ATV function and AFR function as close as possible to 100 LJ Fly with the governor turned OFF and adjust the needle so that the engine smoothly reacts to movement of the transmitter stick If there is a point at which the reaction of the engine is considerably different due to a too rich or too lean mixture the governor may not operate to its maximum potential Fuselage vibration countermeasures If the helicopter frame 1s weak or the engine mount is deformed or not installed properly the vibrations applied to the engine will increase Engine vibrations will lead to unstable speed and prevent the governor from maximum perfor mance Therefore make sure that the engine is vibration free and that the carburetor is of good liner design because the governor cannot correct engine problems Use of a tuned silencer The use of a tuned pipe type silencer may cause the engine throttle response to be substantially different from that with a normal muffler Adjust FUSELAGE SETTING PRECAUTIONS the needle and pipe length so that engine speed changes are proportional to the throttle opening If the engine speed does not change linearly the governor will not perform satisfactorily with a muffler or a pipe that does not allow the carbure tion to be linear GOVERNOR OPERATION Governor operation The CGY750 operates from 1000 to 3000rp
22. NH The gain ad justments are now made by entering the AIL ELE Basic Gain and pressing the data or keys The gain adjustments are made by entering the AIL ELE Basic gt Gain and pressing the data or keys Initially the AIL and ELE gains should be set to 50 and the operating mode should be set to NOR Once the trim process has been com pleted the flight mode should be changed over to AVCS Z WARNING Verify that the gyro compensates in the cor rect direction for all three axis before flight If the compensation direction is incorrect the model will roll flip or pirouette uncontrollably at a very high rate TAIL RoTOR SERVO INSTALLATION AND SETUP Following your transmitter instructions pro gram your transmitter as follows Ql Enable the rudder gyro function within the transmitter Lj Set the gyro mode to AVCS GY within the transmitter Lj Set the remote gyro gain to 80 AVCS in the transmitter for the Normal and Hold flight conditions and use 50 AVCS for all idle up conditions See Setting The Gain section later in this manual for more details L Set the Tail Rotor ATV EPA to 100 for both left and right LSet D R to 75 for both left and right This will reduce the maximum pirouette rate Make adjustments to these values once the initial test flight has been completed LJ It is recommended that you run 30 soften ing expo on the tail rotor channel Z WAR
23. NING amp 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 Once these steps are completed turn the receiver power on and allow the gyro to initialize Follow the instructions within the Rudder Gyro Basic Setting section of the manual and select the Ser vo Type that matches the servo you have chosen to use Power down the receiver for now TAIL RoTOR SERVO INSTALLATION AND SETUP Q Install the tail rotor servo into the mechanics and connect the servo to the gyro Remove the servo arm screw from the servo Turn the receiver power on and allow the gyro to initialize Enter the Rudder Gyro Basic Set ting mode and go to parameter 4 Servo Limit Point Setting While in the servo lim its parameter the servo will remain centered 90 L Place an appropriate servo arm onto the servo and ensure that it is perpendicular to the tail rotor pushrod as shown Remove the unused sides of the servo arm Lj Install the control ball supplied with your he licopter onto the servo arm For larger electric models or nitro powered models we recom mend placing the ball 13 5mm from center Once the control ball has been installed place the arm back onto the servo ensuring that it is perpendicular to the tail rotor pushrod Install the servo arm screw TAIL RoTOR SERVO INSTALLATION AND SETUP Q Follow
24. RNOR SPEED SETTING The CGY750 is used by setting the channel in the 10 Revolution channel menu within the S BUS Basic Setting to the governor speed setting chan nel of your system When using an independent governor on off switch activate the 6 Governor on off switch function within the Governor Basic Setting section earlier in this manual Direct set by transmitter on Gov mixing LJ When governor mixing as in the T14MZ and T12FG 1s used to switch the RPM of the rotor head speed the head speed can be switched with each condition or the switch For a description of the governor mixing refer to your transmitter s manual Using by 3position switch L Set the RPM at each switch position in the 2 Revolution setting menu within the Gov ernor Basic Setting section earlier in this manual Speed setting precautions e When the speed setting channel travel EPA ATV AFR is set to 20 or less points 1 and 3 cannot be set e The engine maximum speed range limits the maximum speed setting e Test fly the helicopter with the governor turned off and tach the main rotor R P M while in hori zonal flight This is the maximum R P M that can be achieved with the engine and pitch setup that you are using Please set the governor maximum speed to approximately 50 R P M s less than max GOVERNOR SPEED SETTING R P M Example If 1800 R P M s is max then set governor to 1750 s The maxim
25. The CGY750 should compensate by adding left cyclic to the swash plate If the CGY750 compensates in the wrong direction then it will be necessary to reverse the Compensation Direction setting by pressing the or data key once A WARNING Verify that the CGY750 compensates in the correct direction before flight If the compen sation direction is incorrect the model will roll uncontrollably at a very high rate AILERON Gyro Basic SETTING t AGN 100 CTA ME Ec 3 Gyro gain default 100 ranges 0 120 The top line shows the Aileron Gyro Base Gain and the bottom line shows the actual working gain as set within the transmitter If the Aileron Gain Channel is set to INH within the CGY750 S Bus gt Basic setting menu then the remote transmitter gain adjustment is not available and the actual working gain is set by using data or keys within this parameter Wrk 9 v STS biden ModeNWr k Mode Was Era Ba Aves I 4 Gyro working mode default CMT The available choices are CMT Normal or AVCS The CMT mode will allow you to select either AVCS or Normal mode by using the Aile ron Gain Channel The Normal mode will always operate in Normal Rate Mode and AVCS will always operate in AVCS Mode Use the data or key to select the desired working mode ELEVATOR Gyro Basic SETTING The ELE Gyro Basic menu contains all of the functions necessary to set up the CGY750 pitch
26. adjustments as needed to achieve 0 degrees of pitch on both main rotor blades Rotate the main rotor blade with the pitch gauge so that it is aligned with the tail boom Apply full right cyclic on the transmitter and measure how much pitch is on the blade Ini tially it is best to start with 8 degrees of cy clic Adjust the value of the SWASHset Basic Ail Rate parameter until 8 degrees of cyclic is achieved Rotate the main rotor blade so that it is per pendicular to the tail boom and apply full aft cyclic Adjust the SWASHset Basic Ele Rate parameter until 8 degrees of cyclic is achieved If the values for the cyclic do not match up do not be concerned This is perfectly normal and generally the Aileron rate will be lower than the Elevator rate Using the pitch gauge adjust the collective range per your preference or per your heli copter s instruction manual All of the AFR ATV and D Rs for the cyclic and collective functions within the radio SWASH SERVO INSTALLATION AND SETUP should be set to 100 At this point the basic setup is complete but it is necessary to set up the gyros and compensation directions before attempting to fly the model LJ Check the cyclic and collective movements for interactions and if any are noted please re fer to the Swash Plate Adjustment procedure listed within the back of this manual When using modern digital servos and with a proper setup this shouldn t be nece
27. arameter sets the base gain of the gyro This can be used to adjust the gain if your ac tual transmitter gain does not match the gain on the CGY750 correctly RUDDER Gyro EXPERT SETTING 4 Rudder exponential EXP gt NOR 40 10 default 60 Sports AVCS 40 Sports Normal 20 3D AVCS 20 3D Normal ranges 100 100 This parameter sets the feel of the tail rotor con trol around center Decreasing the number will result in a softer feel and increasing the number will result in a more aggressive feel Adjust to suit your preference The RUD EXP functions within your transmitter can also be used to make this adjustment 5 Rudder delay mode BEARS BED am uI E seOlalok El IT EZ 2 default Function Select Function for a softer control feel and Constant for a linear and aggressive feel 6 Control delay In CNT D1lIn 25 20 n default Sports 12 3D 15 ranges 0 20 This parameter sets the delay as you move the stick from neutral toward left or right Larger val ues will result in a smoother feel Use the data or key to adjust the value RUDDER Gyro EXPERT SETTING 7 Control delay Out CNT Dout z 20 default Sports 10 3D 12 ranges 0 20 This parameter sets the delay when the stick is re turned back to the neutral position Larger values result in a smoother feel Use the data or key to adjust the value 8 Stop delay 120 default 120 ran
28. ates that the initialization process is taking place and the heli copter must remain perfectly still so the controller can determine the gyro center position for each axis Home SCREEN Once the initialization process has been com pleted the Home Screen will be displayed and the cyclic tail rotor servos will move several times in quick succession If the CGY750 is set to the Gyro THR mode or if the H4 xx swash plate type has been selected then the governor will be disabled and the screen will look like d below instead The display will cycle through and show the current AIL ELE and RUD gains Initial Home screen 1 Axis indication 2 Gyro operation mode E 3 Gyro gain RUDA 100 mine gay 4 on off switch ty t 7 a Menus 5 Yaw rate comp 6 Battery voltage b Aileron gain c Elevator gain d Gyro only display display mode JENA SEO Geer Ra od SUE 1 Axis indicator Cevo This will cycle every two seconds and show the axis AIL ELE or RUD and the current gain value 2 Gyro operation mode This indicates either A for AVCS or N for Normal operating modes If the A is shown in inverted colors then the rudder neutral is offset and re learning the center position should be completed immediately Home SCREEN U U U RUDA1OOXZMRUDN100 BRUDA1 00 CL ZDI 54 SUES 54 Bub RUD AVCS Mode RUD NOR Mode Neutral offset at at 100 gain at 100 gain AVCS mode When using the AVCS operating
29. aximum slow position gt gt gt Remains ON e Switch set to off position gt gt gt OFF GOVERNOR Basic SETTING B FS Set B FS ae Inhibi i a 7 Battery failsafe setting default Inhibit The governor goes into the failsafe mode when the battery voltage is below BFS Volt When activated the governor is deactivated and the throttle servo is moved to B FS position Move TEST the throttle stick to idle position The B FS condition is deactivated for 30 seconds and re turned to B FS after 30 seconds have passed Move the throttle stick to B FS position as de sired Push set key to confirm the setting Push ing RSET will inhibit the function Off CW TOP W BOT SE G CCW BOTM CCWZTOP 8 Yaw rate compensation default CW TOP This works the revolution compensation dur ing pirouette Set the mode to match the gyro installing direction either CW TOP CW BOTM CCW TOP CCW BOTM by pushing the Set key Pushing the RSET key inhibits the function At the governor only mode this function is in hibited CW clockwise CCW counter clockwise TOP normal side BOTM reverse side Governor Basic SETTING le High tFn CAA 9 Servo limit point setting It sets the throttle servo maximum throw It is fundamental for governor operation It must be set prior to other function setting It must be set when the throttle linkage is changed or trim is changed as well For this setting idling position
30. ce Please take extra care in this step to ensure the optimum flight performance e The bottom of the CGY750 Gyro Sensor must be perpendicular to the main shaft y e The roll axis must be parallel to the tail boom and the pitch axis must be perpendicular to the side frame TROUBLESHOOTING If any issues are noted during flight such as drifting inconsistent hold or inconsistent control rates then please review the following trouble shooting recommendations 1 Always verify that the tail rotor and swash plate mechanisms operate and that the drive system Gyro SENSOR INSTALLATION is in proper working order Electromagnetic interference could be caus ing the problem If you feel everything is set up correctly and that the helicopter is vibration free then consider moving the gyro sensor to a new location away from servos ESC and drive motors Vibrations will decrease the performance of all gyro systems Even though the CGY750 gyro sensor is the most vibration resistant gyro sen sor available eliminating vibrations will always improve performance Throughout extensive testing it has been found that the CGY750 gyro sensor performs best when the sensor is mounted rigidly to the airframe This is mainly due to the sensing of all 3 axis It is highly rec ommended to avoid using soft foam pads as this may allow the gyro to bounce around on the roll and pitch axis causing instabilities and possible loss of cont
31. ch is on the flight mode switch perform the trim flight and land the model Shut the engine off and change the CGY750 operat ing mode to AVCS Now turn the CGY750 off and back on The neutral positions for both aileron and elevator will be memorized Manual Gain Adjustment Perform the trim flight and land the model Shut the engine off Change the CGY750 operating mode to AVCS Now turn the CGY750 off and back on The neutral positions for both aileron and elevator will be memorized 3 After the trim flight change the gyro operat ing mode to AVCS and test fly the model again Increase the gain on the aileron and elevator gyro until you notice a oscillation then decrease the gain slightly In case of lack of the channel for gyro gain set ting on the transmitter adjust the gyro gain on the CGY750 Rudder gyro adjustments The Tail Rotor AFR or D R function within the transmitter is used to adjust the pirouette rate of the helicopter For example at 100 D R with the gyro set to Sports mode the helicopter will ADJUSTMENTS DURING THE TEST FLIGHT achieve a 450 deg sec pirouette rate with the stick at its extent If you would like the model to pirouette faster then increase the AFR or D R If you would like the model to pirouette slower then decrease the AFR or D R The gain should be raised until the tail begins to oscillate quickly also called Tail Wag Once this point has been achieved reduce the gain by a couple o
32. data and key to make ad justments Use the data or key to adjust the value 18 Sensor mode TTB veS KZT v KTS KZT v Te Moderate Quick Middle default Moderate This parameter selects the response of the gyro sensor signal The response 19 set as Moderate Middle Quick but the stability is vice versa Most helicopter will perform the best when using the Moderate setting Smaller heli copter may perform better on the Quick or Middle setting Use the data or key to adjust the RUDDER Gyro EXPERT SETTING value 19 Neutral compensation Ntr Obsr Ntr Obsr default ON This function works to recall the neutral point of the rudder servo for improving tail stop motion To use this function effectively hover the heli copter for about one second and memorize the neutral point If using a 3D helicopter this func tion may not work as well due to the quick and aggressive movements Check the function to see if it works correctly Use the data or key to enable and disable this option 20 Yaw smoother Yaw SmthigYaw Smth default ON Selects the rudder control feeling When On rud der control becomes more exact When Off rud der control response increases Select the rudder control feeling to your taste Use the data or key to enable or disable this function 21 Stop boosting Off 150 default Off range Off 200 This function works for boosting the gyro gain
33. de within the trans mitter function assignments then it will also be necessary to make the changes within the S Bus function assignments as well Push MODE key S Bus Basic 1 S Bus connection setting start display Use the mode or keys to navigate through the menu Setting ranges common 1 16ch DG1 DG2 INH S BUS Basic SETTING 2 S Bus setting Aileron channel default Ich Using the data or keys to set the correct channel number 3 S Bus setting Elevator channel default 2ch Using the data or keys to set the correct channel number 4 S Bus setting Throttle channel default 3ch Using the data or keys to set the correct channel number 5 S Bus setting Rudder channel default 4ch Using the data or keys to set the correct channel number 6 S Bus setting Pitch chan nel default 6ch Using the data or keys to set the correct channel number 7 S Bus setting AIL gain channel default 9ch Using the data or keys to set the correct channel number AW AW muy Cc Ls Fs OU AW mo 66 C 66 C 66 C q v v v PO wn VO o zZ o zZ O gt a gt w gt UU VM 0 66 C v mo o zZ gt 00 DU G 30 C S BUS Basic SETTING S BusCNA EGn 10ch 8 S Bus setting ELE gain channel default 10ch Using the data or keys to set the correct channel numb
34. djusted individually It is only available at H4 swash mode 5 AIL PIT mixing rate AIL PIT Sl 100 s default 100 ranges 30 150 This adjusts the aileron to pitch mixing rate The rate can be adjusted for left and right directions individually 6 AIL ELE mixing rate AILELE Sl 100 default 100 ranges 30 150 This adjusts the aileron to elevator mixing rate The rate can be adjusted for left and right direc tions individually It is only available for H4 45 swash mode 7 AIL ELE2 mixing rate AIL ELE2 BERE LT default 100 ranges 30 150 SwashH ExPERT SETTING This adjusts the aileron to 2nd elevator mixing rate The rate can be adjusted for left and right directions individually It is only available for H4 45 swash mode 8 ELE PIT mixing rate ELE gt PIT 50 default 50 H3 120 100 except H3 120 ranges 30 150 This adjusts the elevator to pitch mixing rate The rate can be adjusted for up and down directions individually 9 ELE AIL mixing rate ELE AIL 50 default 50 H3 120 100 except H3 120 ranges 30 150 This adjusts the elevator to aileron mixing rate The rate can be adjusted for up and down direc tions individually 10 ELE ELE mixing rate ELE gt ELE2 BHE CE default 100 ranges 30 150 This adjusts the elevator to 2nd elevator mixing rate The rate can be adjusted for up and down directions individually It
35. e Governor Operation 84 e Governor Speed Setting 86 e S BUS Basic Setting 88 TABLE OF CONTENTS e Rudder Gyro Expert Setting 9 e Aileron Gyro Expert Setting 99 e Elevator Gyro Expert Setting 103 e Swash Expert Setting 107 e Governor Expert Setting 113 e Swash Setting Parameter Table 118 Linkage Compensation 121 Instructions for gyro functions CEI Instructions for governor function Technical updates and additional programming examples can be found at www futaba rc com faq PRECAUTIONS Meaning of Special Markings Pay special attention to safety where indicated by the following marks ZADANGER Procedures which may lead to dangerous conditions and cause death serious injury if not carried out properly ZAWARNING Procedures which may lead to a dangerous condition or cause death or serious injury to the user if not carried out properly or procedures where the probability of superficial injury or physical damage is high Z 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 car ried out properly O Prohibited d Mandatory PRECAUTIONS Z WARNING Failure to follow these safety precautions may result in severe injury to yourself and others e Read through t
36. e switch Set the desire RPM at each position by pushing the data or key s Direct set by transmitter on Gov mixing Use default governor mixing as in the T14MZ and T12FG functions Calibrate the 3 point first and then direct RPM setting can be set after that GOVERNOR Basic SETTING 7 92 t 3 Gear ratio default 8 00 range 1 30 Input the main rotor gear ratio by pushing the data or key Notes e f the gear ratio is not properly set the set speed and actual engine speed will be differ ent e The gear ratio should be given in the heli copter instruction manual If the helicopter in struction manual does not give the gear ratio calculate the gear ratio as follows Engine oe Rotor pinion gear 7 N2 J N main gear _ N1 Gear ratio N1 N2 e Carry values less than 1 1000 to the next whole number GOVERNOR Basic SETTING Analog DG 2 1520 4 Servo selection default Analog Select the throttle servo type Digital servos of fer the best response The type is changed by pushing data or key AWARNING This parameter must match the type of ser vo you are using Incorrect setting may damage the CGY750 or the servo possibly resulting in a loss of control during flight Stick S W PAES Stick SW MEE O 5 Stick switch default 30 The governor can be activated by throttle stick position Move the throttle stick to the on position and push SET key the on
37. ect the CGY750 s overall perfor mance All rotating components on the helicop ter should be balanced to minimize vibrations in flight Ensure that your motor is running smooth and all vibrations have been addressed before installing and test flying the CGY750 Gyro sensor replacement e Each CGY750 gyro control box is calibrated specifically for the gyro sensor included Do not attempt to use another CGY750 sensor with the control box as performance will suffer due to being out of calibration The calibration process must be completed by an authorized service center If your sensor needs replacement please send the complete unit to your region s support cen ter for repair OPENING SCREEN Verify that all of the connections are correct be tween the CGY750 receiver and power supply If your helicopter is using an electric motor for propulsion remove the pinion gear now for safety If this is the first time the helicopter has been powered up remove the servo arms and linkages to prevent damaging the servos Power up the transmitter and allow it to initiallize Turn the receiver on or connect the flight battery and allow the helicopter to remain still while the CGY750 initializes The display will first show the ID number of your CGY750 and the Firmware Version ID 65535 Ver 1 01 After the CGY750 has powered up the screen will change to show an animation of a helicopter per forming a stationary flip This indic
38. elicopter A DANGER It is necessary to remove the pinion gear from the electric motor or disconnect the mo tor from the ESC before powering the model CONNECTING THE CGY750 up for setup or bench testing Electric motors are extremely powerful and the capable of de livering the power instantly causing injury to yourself others or the surroundings If the CGY750 is being installed into an electric helicopter you may want to consider connecting the ESC to the TH E2 throttle elevator 2 out put of the CGY750 Before doing this you must remove the pinion gear from the electric motor or disconnect the motor from the ESC before power ing the model up the first time Once the model has been powered up navigate to the gyro mode function and set it to GYRO THR This sets the CGY750 to act as a gyro and throttle output The CGY750 will simply pass the throttle signal from the receiver through to the TH E2 port on the CGY750 Once your ESC is connected to the CGY750 you must complete all necessary transmitter setup ATV EPA REV ETC per your ESC instruc tions and it is recommended to test the ESC setup with the pinion gear removed from the motor to ensure everything has been setup properly MECHANICS PREPARATIONS Z WARNING Newer high end servos and other radio equipment are capable of placing large de mands on the power systems in use today When using a regulator you must ensure that the regulator is capable o
39. er 9 S Bus setting RUD gain channel default 5ch Using the data or keys to set the correct channel number 10 S Bus setting RPM chan nel default 7ch Using the data or keys to set the correct channel number 11 S Bus setting GOV on off channel default 8ch Using the data or keys to set the correct channel number RESET RESET RESET TPE GR Exes 12 S Bus data reset This resets the S Bus channel assignments back to the defaults Press the data key and Exec will be displayed as a confirmation Press data to confirm the reset back to the default settings RUDDER Gyro EXPERT SETTING The expert menu contains settings for pilots look ing to achieve the absolute best performance from there gyro To enter the expert menu navigate to the Basic menu press and hold the mode key for one second and the menu will change from the Basic to Expert To exit the expert menu press and hold the mode key for one second and the basic menu will be displayed 1 Start display Gyro Fl Expert Use the mode or mode keys to navigate the menu 2 Rudder servo neutral setting RUD Ntr 0 uS default 0 uS ranges 140 140 uS This parameter is used to set the neutral position of the rudder servo Press the data or key to make adjustments 3 Gyro basic gain GY Gain A 100 default 100 ranges 50 120 This p
40. eron or pitch direction In case of the interaction is increased when increase the SWcp ELE rate it may be op posite the compensation direction open the CpE Dir menu and set the direction to minus LJ Both up and down elevator should be ad justed Move the pitch stick to minimum position Adjust SWcp ELE rate same way as pitch maximum position L Open the SpeedCmp on the SWASHset Ex pert menu Move the elevator stick up and down quickly Adjust the SpeedCmp rate to be minimized the interaction to the pitch di rection FUTABA CORPORATION Phone 81 475 32 6982 Facsimile 81 475 32 6983 1080 Yabutsuka Chosei mura Chosei gun Chiba 299 4395 Japan 1M23N24902 FUTABA CORPORATION 2011 03 1 Flybarltess Control Gyro COS Y 750
41. ert menu Push mode or key for more than one second again on the Governor Expert menu to be returned to the Governor Basic menu 1 Start display Governor El Expert Push mode or key to scroll through the edit ing menu Pushing mode or key for more than one second brings you back to governor basic menu 2 Governor working mode udal aiul l Lidel Av Te Governor Rev Lmt default Governor This selects the governor working mode as either governor or revolution limit mode The Governor mode works as the engine revolution is at a con stant revolution The revolution limit Rev Lmt mode only works when the engine revolution ex ceeds the setting revolution and engine revolution is to be lower Pushing data or key the mode is changed When the Rev Lmt mode is selected the menu 6 Throttle data mode should be set to Tx Curve mode GOVERNOR EXPERT SETTING 3 Revolution display mode Ry Disp Ryv Disp Rotor Engine default Rotor This selects the revolution display mode for either the main rotor or engine revolution Pushing data or key the mode is changed 4 Operation response Moderate Middle Quick default Middle This selects the governor operation response Select the best match for your engine type Push ing data or key the mode is changed Recom mended selection are Middle gt glow engine Moderate gt gasoline engine Quick gt Brushless motor 5 Gover
42. ery voltage falls below the BAT FS voltage set within the CGY750 gt Gover nor gt Expert menu If this condition lasts for more than one second then the Battery Fail Safe function activates and the throttle servo is brought back to idle This is done to warn you that the battery capacity is dangerously low and you must land immediately At this point the throttle can be reactivated by bringing the transmitter control stick all the way back to idle and then the throttle control will con tinue to operate After 30 seconds the Battery Fail Safe function will activate again requiring you to repeat this process if necessary Memory writing indicator AIL Dir Rever s Z WARNING O Do not power off the CGY750 when the Memory writing symbol is displayed When a setting is changed within the CGY750 the new value must be written to memory and the Memory writing indicator is displayed during this process This may take up to two seconds and the power must not be switched off during this process If the power is switched off during the writing process then all of the settings may be lost SETTING MENUS AWARNING Always exit the Setting Menu and return to the home screen before flying your model The gyro operation is disabled within sev eral of the settings menus to help with setup tasks Always check the operation of the CGY750 verify that the controls are operating the correct direction and ensure the gyros a
43. f delivering the cur rent demands of the equipment you have se lected In addition to this make sure the wiring and switch you have selected are capable of handling high current draws e 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 Even though the CGY750 is a high perfor mance 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 is sues before installing and flying the CGY750 e The CGY750 must be used with a rigid tail rotor drive system Any modern torque tube or belt drive system should be adequate Do not at tempt to fly the CGY750 using a wire driven tail rotor system e 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 e The linkage rod tail rotor bell crank pitch slider and tail rotor grips must operate without friction to obtain the best performance from the CGY750 Binding in the tail rotor control linkage will de MECHANICS PREPARATIONS crease the performance of the CGY750 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 correctly without fric tion or binding e Vibration will aff
44. f percent and test fly the model again Check and set the gain for each flight mode Typically the gain will be lower for the Idle up 1 and Idle up 2 flight modes due to the higher head speed The gain for the Hold condition can also be higher than other flight modes since the head speed is lower and the engine vibration is minimized The tail rotor ratio tail rotor pitch range and tail blade length play a large part in achieving optimum tail rotor performance The gain value can vary drastically from model to model and the exact value should not play a part in the evaluation of the gyro s performance How the gyro operates during flight is the only concern of ours RECOMMENDED Gyro GAIN SETTINGS Recommended gain settings Size Recommended Gyro Gain AIL ELE Gyro RUD Gyro 450 550 30 50 30 50 600 700 70 90 60 90 80 100 80 100 Usinc Normal Mope Most pilots today are using AVCS Mode If you are just starting out it is recommended that you use AVCS Mode exclusively from the start Normal Mode is rarely used today due to the per formance benefits of AVCS mode When using AVCS mode all trimming of the tail is automati cally handled by the gyro If you should decide to use Normal Mode then all trimming and mixing must be setup by you If you will be using the Normal Mode also re ferred to as Rate Mode then a few changes to the setup will be necessary The tail rotor should be set to 10 degrees of tail rotor pi
45. g 70Hz and 1520uS Digital 280Hz throttle servo types e Feed Forward Option allows the CGY750 to con sider other control functions during operation This results in precise governing of the head speed FEATURES e Governor or Revolution Limiter mode selectable e Supports gear ratios from 1 00 through 30 00 e Cutting edge control algorithm provides more con sistent RPM governing e Revolution sensor is compatible with the GV 1 The CGY750 also supports a optional back plate revolution sensor e Other function e Maximum RPM memory e Cumulative engine operation timer e Power saving OLED CONTENTS Your CGY750 includes the following components Type of set e Gyro amp Governor set w R6203SB e Gyro amp Governor set e Gyro set w R6203SB e Gyro set SET CONTENTS CGY750 Control Amp Mini Screwdriver Dust Covers x3 Gyro Sensor Mounting Pads x3 Governor Sensor Sensor Mounting Hardware Magnet x2 R6203SB Receiver Extension Cord X supplied not supplied CONTENTS CGY 750 Control Box 74 See lt T TT Dust Cover Flybarless Control Gyro Adjustment Screwdriver Gyro Sensor Mounting Pads 3GO0W gt INIT CONTENTS Hevolution Sensor a 9 Magnets 2 O K Sensor Mounting Bracket a Extension Cord SPECIFICATIONS Width Controller Gyro sensor Revolution sensor Length Controller Gyro sensor Revolution senso
46. ge the CGY750 or the servos possibly resulting in a loss of control dur ing flight Always ensure that there is some slack in the gyro cables to help maximize performance Always use the supplied gyro mounting pads to attach the gyro to the helicopter mechanics Do not use a strap that encompasses the CGY750 sensor This may affect the overall performance of the gyro Always allow the gyro to adjust to the sur rounding environmental temperature before flight A large temperature change during use will cause drift and other operational issues The gyro sensor and control box have a elec troconductive coating Do not allow any power leads or other wiring to come into contact with these items 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 gt AVCS gt Normal gt 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 revolution mixing must be dis PRECAUTIONS abled and any tail rotor or swash offsets for flight modes must be disabled When the CGY750 is operated in AVCS mode the tail rotor or swash servos will not center when
47. ges 0 20 This parameter sets the delay as you move the stick from neutral toward left or right Larger val ues will result in a smoother feel Use the data or key to adjust the value 4 Control delay out AIL Dout AE 2 n default 7 FLT Mode 3 600 700 ranges 0 20 This parameter sets the delay when the stick is re turned back to the neutral position Larger values result in a smoother feel Use the data or key to adjust the value 5 Stop delay 120 default 120 ranges 100 400 This parameter is used to adjust the aggressive ness of the stops Larger values will delay the stop resulting in less bounce Use the data or key to adjust the value 6 AVCS damping AVCS Dmp 98 default 98 FLT Mode 3 600 700 ranges 0 150 This parameter sets the AVCS damping factor In creasing the value the holding power is increased AILERON Gyro EXPERT SETTING but the control feeling may be influenced 7 Control feeling B n default 5n ranges 1 10n This parameter sets the control feeling of the aile ron control Increasing the value the control feel ing will be consistent Decreasing the value the control feeling will be dynamic 8 Rate Constant Rate Cst 50 default 50 FLT Mode 3 600 700 ranges 0 150 This parameter selects the consistency of the roll rate Adjust the roll rate between stationary or straight flight differences 9 Ro
48. ges 100 400 This parameter is used to adjust the aggressive ness of the stop Larger values will delay the tail stops resulting in less bounce Use the data or key to adjust the value 9 Gyro working mode ied aule Vid auler Wid Ave lZ Normal AVCS default CMT This parameter sets the gyro operating mode The choices are CMT Normal and AVCS The CMT function is used when you need to switch between the Normal and AVCS modes based on the gain value Use the data or key to select the op erating mode RUDDER Gyro EXPERT SETTING 10 Pirouette speed ANG 450d AM 0Od default 450 deg sec Sports 720 deg sec 3D ranges 100 999 deg sec This adjusts the pirouette speed of the rudder The default values are set 450 deg sec on F3C mode and 720 deg sec on 3D mode when rudder is 100 The bottom of the line shows the actual pir ouette speed of the rudder Use the data or key to adjust the value 11 Gain change up delay CG DlInc 12 Fr default 12 ranges 1 50 This sets the delay of the gyro gain from low to high The value represents from idle up to hover ing Increasing this value may stop tail hunting if it is taking place Use the data or key to adjust the value 12 Gain change down delay 3 Fr default 3 ranges 1 50 This sets the delay of the gyro gain from high to low The value represents from hovering to idle up Decreasing this value may stop tail hun
49. he entire manual before operat ing this product BEFORE EACH FLIGHT Always check the transmitter and receiver bat tery voltage to ensure they have enough remain ing capacity to complete the flight Always exit programming mode before at tempting to fly the model Only use the CGY750 with a 2 4GHz system such as the Futaba FASST system or a PCM system Use with an FM system is strongly dis couraged since interference can cause serious operational problems Gyro operating precautions The CGY750 requires 5 10 seconds to ini tialize 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 CGY750 is now ready for flight Verify that the gyros are operating and com pensating in the correct direction before each flight If the compensation direction is incorrect on any axis the model will become incontrollable after take off Verify that the gyro is operating in the desired mode KS PRECAUTIONS Verify that the gyro mounting pads are in good condition Verify that the gyro wires are not contacting the frame of the helicopter The servo type parameters within the CGY750 must match the type of servo you are using In correct setting may dama
50. he start display Pushing mode or key during confirmation display the reset process is aborted SWASH SETTING PARAMETER T ABLE The table shows the preset parameters by each heli size and flight mode combination Refer to the instructions within the Swash Basic Setting section of the manual 450 550 Aileron gyro Flight Mode 1 2 3 4 mosom sex ore osa oen om mom wf ef ad moea ws vo ad nl sin or arn ar ae e 0 Bean roo voor roor r00 soon men oeoa zza szoa zooa sous Elevator gyro Pt 2 3 4 5 sore ora oe sox oo tom mom f e o ols wora ss vol o of 5 OEEC 20m pasca 20 an oa od o Bean roor 1 som roo woo men Rg 20045 200 ses soa SWASH SETTING PARAMETER TABLE 600 700 Aileron gyro Flight Mode 1 2 3 4 osom sex ora oer osr soon mom f A e rnet e A e srs son sora Rate Ca 50 D Gain 200 ANG Base 300d s Elevator gyro Flight Mode 1 2 3 4 AVCS Dmp 100 enom f ef vol Cnt Dlyout 15 al ao a rs re a am Rate Ost 30 D Gain 200 ANG Base 27008 SWASH SETTING PARAMETER TABLE 750 More Aileron gyro Flight Mode 1 2 3 4 osom sex ora os o0 mom o ef of e emoa o ef o e oa pao sox ox ox 70 oan 200 zoor 2007 200 ane ase aoa D Elevator gyro Flight Mode 1 2 3 4 Some oral ow oer oom enom f ef vol Cnt Dlyout 15 al ao a rs aoe pac som onl om 7
51. ify within your transmitter s Servo Display function if possible This will be considered the 0 collective position for setup Temporarily install the servo arms onto the cyclic servos and ensure that the servos are perfectly level Small adjustments can be made using the SWASHset Basic AIL ELE COL Ntr adjustment for each servo if necessary Mount the linkage ball onto the servo arm per your helicopter s instruction manual and install the servo retention screw onto each servo LJ Move the forward aft cyclic stick forward and verify that the swash plate tilts forward If the swash plate tilts the wrong direction then it will be necessary to reverse the sign of the SWASHset ELE Rate parameter for example 50 would become 50 Move the left right cyclic stick to the right and verify that the swash plate tilts to the right If the swash plate tilts left then reverse the sign of the SWASHset AIL Rate parameter As a final check verify that the swash plate moves in the proper direction per your stick movements for the roll pitch and collective SWASH SERVO INSTALLATION AND SETUP functions Li Navigate to the SWASHset Basic AIL Rate parameter This will disable the gy ros and cause the servos to remain centered during set up Using a pitch gauge ensure that the swash plate is perfectly level and that the main rotor blades are at 0 degrees pitch when the collective stick is centered Make any mechanical
52. ing the starting of the governor Pushing datat or key the value is changed 10 Low limit at hovering 20 default 25 range 0 80 This sets the throttle low limit during hovering revolution to avoid too lean a carburetor Pushing data or key the value is changed 11 Low limit at idle up LLmtIdup 40 default 45 ranges 10 80 This sets the throttle low limit during idle up revolution to avoid too lean a carburetor Pushing data or key the value is changed 12 Battery F S voltage setting BFS Volt 3 8 V GOVERNOR EXPERT SETTING default 3 8 v ranges 3 5 7 5v This sets the battery fail safe and low battery alarm voltage Set the proper voltage by the bat tery type The battery characteristics are different by different manufacture Please make sure the battery capacity is remained for 1 flight time 5 10 minutes after starting the battery alarm The value is changed by pushing DATA or key Suggested setting voltages are as follows e 4 cells NiCd or NiMH Normal 4 8v 3 8 v e 2 cells LiFe Normal 6 6 v 6 0 6 2 v e 2 cells LiPo Normal 7 4 v 7 2 7 4 v 13 Governor data reset RESET RESET RESET CIUR EEGI mE This resets the governor parameter to default set ting The Exec is displayed by pushing data or key for confirmation Pushing data or key again completes the reset process displays Exec and returns to t
53. ion 4 AIL Output e Connect the aileron servo 5 ELE Output e Connect the elevator servo 6 PIT Output e Connect the pitch servo 7 TH Output e Connect the throttle servo e Connect the ESC w BEC and set the operation mode to Gyro THR mode 7 E2 2nd ELE Output e Connect the second elevator servo Swash mode H4 00 or H4 45 8 RUD Output e Connect the rudder servo CONNECTING THE CGY750 Connection to the receiver servos and sensors The CGY750 requires an S Bus receiver such as the R6108SB R6208SB or the R6203SB or the optional PWM Receiver to S Bus adapter avail able separately Using the supplied extension connect the S Bus receiver port or from the S Bus PWM adapter to the CGY750 S Bus port Install your receiver battery regulator switch and any other necessary electronics now Connect the power lead of your switch regulator to the battery connector on the receiver Plug the cyclic servos AIL Aileron ELE Elevator PIT Pitch RUD Tail Rotor and if using the H4xx swash plate type TH E2 Elevator 2 into the appropriate port on the CGY750 Determine the best location to place the receiver and CGY750 control box Mount the receiver and the CGY750 control box to the helicopter mechanics using vibration adsorbing self adhesive foam pads The CGY750 gyro sensor will be in stalled in a later step Using wire mounts wiring fixtures molded into the helicopter or hook and
54. is moved towards positive collective pitch If the servo is moving the wrong direction then press the data or key to reverse that specific servo within the GY750 Once the collective is operating in the correct direction check the cyclic controls If the cyclic controls operate in the wrong direction reverse the Swash AFR for that function within the CGY750 This function is only used with the H4 swash plate types Otherwise the function is disabled Swash Basic SETTING 10 Servo neutral adjustment default 0uS Tindividual neutral adjustment for each of the swash plate ser vos All servo arms should be perfectly perpendicular to the control linkage with the collective stick positioned at 0 degrees col lective usually centered The ELE2 neutral adjustment only works if the H4 xx swash plate type has been selected To use this function select the servo you would like to adjust and press the data or key to position the servo as desired 11 Swash AFR rate adjust ment default 50 U E2Ntr U m U m D 5 _ mi Fe _ BI Ba B B noia ozik ozio o lt oo ct ct ce a 1 S 0 G G G G ke ta m7 T On ct 0 The Swash AFR settings are used to adjust the direction and amount of throw allowed for each function Think of this as the maximum travel endpoint for each function except you want to set this to the maximum amount of cyclic collective pitch yo
55. is set first then high position guided by the display Push the data or key to memorize Finish is dis played when the setting is completed Error is displayed when the setting position is out of range too narrow from high to idle below 50 through When using the CGY750 for the first time or when making changes in the throw of a servo always perform the limit setting operation ee gt Renae eee 10 Limit point testing It tests the limit point if they are correct Push data or key Throttle servo moves to setting point followed to the display GOVERNOR Basic SETTING Rev Sens 1 624i 11 Revolution sensor testing It tests the output level of the revolution sensor Turn the engine by hand and check the output level The display indicates the current level on left side numbers maximum level on right side numbers The output level needs to be more than 60 for correct operation MOUNTING THE MAGNET AND SENSOR Modify the cooling fan and install the accessory magnet and attach the magnetic sensor to the en gine at the position shown below Cooling fan Magnet Embedded in cooling fan Sensor Attached to engine flange through a stay When installing the sensor mag net to the muffler side also refer to the needle side mounting Magnet operating side check LL Bring the magnet near the end of the sensor and check the
56. ll rate setting ANG Rate 100 default 100 ranges 50 150 This parameter adjusts the roll speed by the aile ron control Set the values to match the roll rate of the helicopter 10 D gain setting 200 AILERON Gyro ExPERT SETTING default 200 HeliSize 600 700 ranges 0 250 This parameter adjusts the D gain differential gain of the aileron gyro It changes the charac teristics of the control feeling and stop motion Select the preferred value 11 Sensor mode TTB veS KZT vK KZT v Te Moderate Quick Middle default Middle This selects the response of the gyro sen sor signal The response is ordered by Moderate gt Middle Quick but the stability is vice versa Select the good matching for the heli Pushing data or key the mode is changed 12 Data reset RESET RESET RESET AIL Gyr This resets all of the aileron gyro parameters back to the default values Press the data key once and Exec is shown as a confirmation Press the data key again to confirm the operation and all of the gyro parameters will be reset ELEVATOR Gyro EXPERT SETTING The expert menu contains settings for pilots look ing to achieve the absolute best performance from their gyro To enter the expert menu navigate to the Basic menu press and hold the mode key for one second and the menu will change from the Basic to Expert To exit the expert menu press and hold the mode
57. lt 98 FLT Mode 3 600 700 ranges 0 150 This sets the AVCS damping factor Increasing the value the holding power is increased but the control feeling may be influenced ELEVATOR Gyro EXPERT SETTING 7 Control feeling B n default 5 n ranges 1 10n This parameter sets the control feeling of the el evator control Increasing the value the control feeling will be consistent Decreasing the value the control feeling will be dynamic 8 Rate Constant Rate Cst 50 default 50 FLT Mode 3 600 700 ranges 0 150 This parameter selects the consistency of the elevator rate Adjust the elevator rate between sta tionary or straight flight differences 9 Roll rate setting ANG Rate 100 default 100 ranges 50 150 This parameter adjusts the pitch speed by the el evator control Set the values to match the roll rate of the helicopter 10 D gain setting D Gain 200 default 200 HeliSize 600 700 ranges 0 250 This parameter adjusts the D gain differential ELEVATOR Gyro EXPERT SETTING gain of the elevator gyro It changes the charac teristics of the control feeling and stop motion Select the preferred value 11 Sensor mode TTB veS Elelu KTS KZT v Te Moderate Quick Middle default Middle This selects the response of the gyro sen sor signal The response is ordered by Moderate gt Middle Quick but the stability is vice versa Select the good matching for
58. m main rotor speed However the engine must be running at the set speed The CGY750 turns off the governor when the engine is starting or idling Governor operation Operation that stabilizes the en gine speed at the set speed Condition of the governor to be on For safety purposes the governor is turned on when the conditions below are satisfied Li The on off switch conditions are set to off during power on Li The stick switch is in on position when it is used LJ The on off switch is in on position when it is used L Setting speed is not Off Lj The engine speed exceeds to 60 of the set ting speed L The speed sensor is working properly The following operations do not indicate trouble When engine speed rises above the set speed A near vertical dive may cause the engine speed to rise above the set speed Throttle operation speed and ON OFF point If throttle operation exceeds 60 of the set speed and the rotor speed rises to the set value the ON OFF point may seem to differ with the operating speed Delay operation to smoothen the switching operation causes this and does not mean that the ON OFF point GOVERNOR OPERATION has changed Deviation from set speed The CGY750 stabilizes the engine speed to within 1 of the set speed For example if the rotor R P M is set to 1500rpm the Rotor R P M speed will deviate about 15rpm However this poses no problem from the standpoint of practical use GOVE
59. mp Mayle Governor U S Push MODE key E P d for 1 second MODE RupDDER Gyro Basic SETTING The RUD Gyro Basic menu contains all of the functions necessary to setup the CGY750 tail gyro for operation Please follow these steps for initial setup U Read the SWASH SERVO INSTALLATION AND SETUP section later in this manual to install and set up the servos L Remove all of the servo arms cyclic servos and tail rotor servo and linkages from the servo to prevent any possible damage All analog servos must also be disconnected un til the servo type has been set up within the CGY750 Power the system up and allow the CGY 750 to initialize LJ Navigate to the RUD Gyro Basic menu Q Read and follow step 2 RUD Gyro Basic ServoTyp Temporarily place the servo arm onto the servo and hold the linkage over the control ball Follow step 3 RUD Gyro Basic gt GY Dir Q While lightly holding the tail rotor linkage onto the servo arm move the transmitter s tail rotor stick to the right and ensure that the tail rotor pitch slider moves the proper direction If necessary use your transmitter s reverse function on the tail rotor channel LJ When the CGY750 is in the Servo limit func tion the servo will always remain centered and the gyro sensor no longer operates In stall the servo arm ensuring that the control ball linkage is perfectly perpendicular to the RupDpDER Gyro Basic SETTING
60. mputer when used with the optional CIU 2 interface S Bus compatible Only one connection is neces sary between the S Bus receiver and CGY750 control box for operation FEATURES e Gyro section e Advanced and adaptive PID control loop is utilized e Small and low profile 3 axis gyro sensor 21 x 21 x 8 5mm 8g Rudder yaw section e Capable of sensing angular velocity up to 1 200 deg sec e Compatible with 1520uS Analog 70Hz 1520uS Digital 280Hz and 760uS Digital 560Hz tail rotor servos e 3D and Sports flight mode e Feed Forward Option allows the CGY750 to consider other control functions during operation This results in more accurate corrections and precise operation e Cutting edge control algorithm provides a consis tent pirouette rate precise operation and smooth yaw control in any flight condition Aileron Elevator roll pitch section e Developed specifically for flybarless helicopters e Included preset parameters for helicopter types 450 550 600 700 and 750 along with control feel preset parameters makes initial setup as easy as pressing a button e Supports H3 120 H3 140 H3 90 H4 00 and H4 45 swashplate types e Governor section e Advanced and adaptive PID control loop is utilized e High speed operation and extremely low latencies provide a more consistent and accurate operation e Capable of governing head speeds from 1000 RPM through 3000 RPM e Compatible with 1520uS Analo
61. nctions to 100 initially for setup and all subtrims should be set to 0 L Power up your transmitter and helicopter Allow the CGY750 to initialize Use the CGY750 SWASHset Type function to select the swash plate type that matches your helicopter Li Navigate to the Servo Type parameter on the CGY750 and select the servo type that matches your servo manufacturer s recom mendations If there is any doubt select the analog servo type to prevent damaging the servos and check with your servo s manufac turer to determine the proper type Q Navigate to the SWASHset AiINTR set ting at this time This will disable the gyros and cause the cyclic servos to remain in the center position If you are using an electric motor then it will be necessary to remove the pinion gear now or disconnect the mo tor from the ESC Once you are certain that the drive motor cannot apply power to the main rotor blades temporarily install servo arms onto the servos Slowly move the col lective stick towards positive collective and SWASH SERVO INSTALLATION AND SETUP verify that each servo is moving the proper direction to increase collective pitch If any servo is moving the wrong direction use the SWASHset Reverse function to change the direction Once the servos are operating in the correct direction for the collective control posi tive and negative the next step is to slowly move the collective stick to the center posi tion ver
62. nding Press the Data or key to adjust the value Gyro SENSOR INSTALLATION The gyro sensor should be mounted on a rigid platform at least 6in 152mm away from a Ni tro Engine It is not necessary to mount the gyro near the main shaft of the helicopter but it is very important that the mounting area chosen is rigid Please refer to your helicopter manufacturer s in structions for recommended mounting locations Test fit the gyro sensor ensuring that the sensor is in perfect alignment with the helicopter on the roll and pitch axis The cable from the gyro sen sor must exit toward the front or the rear of the helicopter since this is the pitch axis Any mis alignment will cause a loss of performance so it is very important to ensure that everything is aligned properly Once you are certain everything is properly aligned and that the sensor lead can be routed to the gyro go ahead and mount the gyro sensor to the helicopter using one of the supplied gyro pads Route the gyro sensor lead to the CGY750 control box and plug the lead into the gyro sensor port Verify that the connector is firmly locked in place e Elevator Pitch axis e Rudder Yaw axis e Aileron Roll axis f Gyro Sensor Gyro SENSOR INSTALLATION Important The CGY750 gyro sensor must be mounted so that the roll and pitch sensing axis are in alignment with the helicopter Any misalign ments over 1 2 of a degree will cause a loss in performan
63. nor gain 40 default Moderate 30 Middle 40 Quick 60 ranges 10 100 This sets the governor working gain When the operation response is changed the governor gain is automatically changed as default The best gain is the amount right before the revolution wagging takes place Pushing data or key the value is changed GOVERNOR EXPERT SETTING 6 Throttle data mode THR Node THR Mode H THR Node Optimize Fixed Tx Curve default Optimize This selects the throttle input operation Pushing data or key the mode is changed Optimize CGY750 sets the throttle input signal to optimum No need to consider the throttle curve setting on the transmitter Fixed The fixed throttle input is utilized related to the revo lution It is recommended for electric motors Tx Curve CGY750 uses the exact throttle input from the trans mitter The throttle curve setting on the transmitter is required When the Rev Lmt mode is selected this mode should be selected 7 Revolution change up delay Rv UpD1ly 10 Frm default 8 range 2 20 This sets the delay of the revolution from low to high Pushing data or key the value is changed 8 Revolution down delay Rv DnDly 10 Frm default 10 range 2 20 GOVERNOR EXPERT SETTING This sets the delay of the revolution from high to low Pushing data or key the value is changed 9 Start delay 1 St default 5 range 2 20 This sets the delay dur
64. o aan ars zoora 200 200 ANG Baso 10 end 2104s aoaie 100 20 60 200 270d s 100 20 60 200 240d s LINKAGE COMPENSATION This explains how to set the linkage compensation example for the H3 120 swash mode The aileron elevator and pitch movement should be set to maximum through by the transmitter in advance Pitch calibration This should be set prior to the compensation process L This reads the pitch operation ranges to the CGY750 Move the pitch stick to center posi tion Pitch zero point Open the Pit Zero on the SWASHset Expert menu and push the set button The pitch zero point is memorized to the CGY750 L Move the pitch stick to minimum position Open the Pit Low menu and push the set but ton The minimum pitch position is memo rized LJ Move the pitch stick to maximum position Open the Pit High menu and push the set button The maximum pitch position is mem orized Pitch movement calibration Q Make sure the swash plate is flat when the pitch stick is center position at first Adjust the length of the linkage rods so that the swash plate is to be flat Move the pitch stick to maximum position and make sure if the swash plate is flat by ad justing the PIT AIL PIT ELE mixing rate on the SWASHset Expert menu Move the pitch stick to minimum position Make the same adjustment as maximum stick position LINKAGE COMPENSATION Aileron movement calibration LJ M
65. our transmitter does not support the re mote gain adjustment it is still possible to use two spare channels on the transmitter to make the adjustments Assign two unused channels verify that these channels are not assigned or operated by a switch or dial within the transmitter Set the SBus Basic AGN and SBus Basic EGN channels to the appropriate channel Use the end point adjustment within your transmitter for these channels to make the gain adjustments and the reverse function within the transmitter to set the mode AVCS NOR Conditions with the transmitter may also be used to achieve different gains based upon flight modes Please refer to your transmitter s instruction manual for further details 2 Initially the AIL and ELE gains should be set to 50 and the operating mode should be set to NOR Once the trim process has been com pleted the flight mode should be changed over to AVCS Z WARNING Verify that the gyro compensates in the cor rect direction for all three axis before flight If the compensation direction is incorrect the model will roll flip or pirouette uncontrollably at a very high rate AILERON ELEvaToR Gyro SETUP Manual gain adjustment l If your setup does not leave any channels free or if your transmitter does not support aux iliary gain adjustment then it is possible to adjust the gain manually within the CGY750 Set both the SBus Basic AGN and SBus Basic EGN to I
66. ove the pitch stick to center position Move the aileron stick right and left Make sure if the interaction to pitch or elevator direction Adjust the AIL PIT mixing rate on the WASHset Expert menu to be minimized the interaction It should be adjusted both left and right direction LJ Move the pitch stick to maximum position Open the SWcp AIL on the SWASHset Expert menu Move the aileron stick left and right Adjust the SWcp AIL rate on the SWASHset Expert menu to be minimized the interaction to the elevator or pitch direction In case of the interaction is increased when increase the SWcp AIL rate it may be op posite the compensation direction open the CpA Dir menu and set the direction to minus L Both left and right aileron should be adjusted Move the pitch stick to minimum position Adjust SWcp AIL rate same way as pitch maximum position Elevator movement calibration L Move the pitch stick to center position Move the elevator stick up and down Make sure that the interaction is to the pitch or aileron direction Adjust the ELE PIT ELE AIL mixing rate on the WASHset Expert menu to be minimized the interaction It should be adjusted both up and down direc LINKAGE COMPENSATION tion LJ Move the pitch stick to maximum position Open the SWcp ELE on the SWASHset Expert menu Move the elevator stick up and down Adjust the SWcp ELE rate on the SWASHset Expert menu to be minimized the interaction to the ail
67. point is memorized When you push the RSET key the function is inhibited When the governor on off switch is inhibited the stick switch is automati cally turned on When governor is turned on and off by trans mitter throttle stick The data is set so that the governor can be turned on and off with the transmitter throttle stick The following describes this operation GOVERNOR Basic SETTING Governor operating point Set speed T Set point or more and 60 of set speed e Throttle stick held at the set point or more gt gt gt Remains ON e Throttle stick lowered past the set point or less than the slow side gt gt gt OFF 100 Po set point or less os OFF region OFF at slow side Governor Basic SETTING On Off FSWRROn OFFSWERONn OFFSW Yn RE ito ON Ha BFE a 6 Governor on off switch default Inhibit It selects the governor activate switch if addi tional switch is used Pushing the SET Data key activates the function The on off direction is changed by pushing the SET key again The function is inhibited by pushing the RSET Data key When governor turned on and off by switch Setting the switch to the ON position turns on the governor The following describes this op eration A Y Governor can be turned on and off by a switch e Switch set to on position and engine running at 60 or more of set speed gt gt gt ON e Throttle stick set to m
68. process be fore attempting to fly the model Swasu Basic SETTING Analog DG 1520 3 Servo type default Analog Select the appropriate setting for the cyclic ser vos Use the data or key to choose from the following servo types DG1520 or Analog Z WARNING Read your servo instruction sheet to deter mine the proper servo settings The servo type parameter within the CGY750 must match the type of servo you are using Incorrect setting may damage the CGY750 or the servo Incor rect setting may also result in a loss of control during flight HeliSizeINHel1liSize INHeliSize Hei 151 sst S is izen 450 550 600 700 4 Helicopter Presets default 600 700 Please select the most appropriate setting for your model The available presets are 450 550 600 700 and 750 or larger The size profiles change many of the options within the CGY750 to tailor the gyro towards a certain helicopter size and the way that it reacts in flight When using this option the CGY750 will be adjusted to provide a consistent feel for various helicopter sizes Please refer to the back of this manual for a complete listing of the helicopter profiles and the flight mode presets Swash Basic SETTING FLT Mode M 5 Flight mode presets default 3 The flight mode presets are used to control the overall feel and aggressiveness of the CGY750 in flight The adjustment range is 1 through 5 Flight mode 1 is the least
69. r Height Controller Gyro sensor Revolution sensor Weight Controller Gyro sensor Revolution sensor Operating Voltage Current Drain Selectable Servo Frame Center Pulse Width Presets Governor Resolution RPM Accuracy Head Speed Range Operating Temperature Control System Sensor Angular Velocity Range 1 141n 29mm 0 83in 21mm 0 30in 7 5mm 1 731n 44mm 0 83in 21mm 0 631n 16mm 0 47in 12mm 0 33in 8 5mm 0 39in 10mm 0 4590z 13g 0 2820z 8g 0 1410z 4g 3 8V to 8 4V DC 70mA 70Hz 280Hz and 560Hz Rudder Gyro only Rate 1520uS 70Hz amp 280Hz 760us 560Hz 3D Sports 450 550 600 700 and 750 0 1Hz 6rpm Engine RPM 1 1 000 3 000rpm 14 F to 113 F 10 C to 45 C Digital advanced control Micro Electromechanical Systems MEMS Gyro Hall effect sensor 1 200 Degrees Per Second Gyro The operating voltage shown only applies to the CGY750 Always verify that your receiver servos tail rotor servo switch and any other electronic compo nents used in your installation are capable of operating at the voltage you plan to use RECOMMENDED SERVOS 91 Size Helicopters Rudder Servo Futaba S9254 Digital Servo Heli FUTM0224 280HZ 1520uS Futaba BLS254 Brushless Heli Servo FUTM0524 280HZ 1520uS Futaba S9257 EP Heli Digital Servo FUTM0667 280HZ 1520uS Futaba BLS257 EP Brushless Heli Servo FUTM0527 280HZ 1520uS
70. re correcting in the proper direction for all axis before attempting to fly the model The data and keys are used to navigate through the Setting Menus RUD Gyro AIL Gyro ELE Gyro SWASHset Governor and S Bus Basic menus Once the desired menu is shown press and release the mode or key to show the next or setting items respectively The expert menus are entered or exited by press ing and holding the mode or key for one second To exit the current menu simply go back to the Basic Settings Menu for the function for example AIL Gyro Basic and press and release the mode or key until the home screen is shown Please see the Setting Menus diagram for a com plete listing of the Home Screen Basic and Expert menus The Governor setting menu is not displayed if the Operating Mode has been set to Gyro Thr or if the swash plate type has been set to the H4 xx type SETTING MENUS Push MODE key Push DATA Maximum RPM HERREY AILa 65 Xe F Mrem Y Engine runtime V OLED Setting OLED MD OLED MD Saver Light Y Operating mode Opr Mode Opr Mode GyrotGov Gyro y Maximum Roll Rate Roll Max ZIM S 30 y Maximum elevator rate Pe IMdA S Basic Expert RUD Gyro RUD Gyro lt P Gyro RUD a AIL Gyro AIL Gyro ELE Gyro Bas ic K ic K ic E RUDA100 B54 Sve HHR ie y SWASHSet SWASHSet Governor Governor Basic a
71. ro Basic gt 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 reach the maximum extent and cause binding Z 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 RupDpDER Gyro Basic SETTING fa 69 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 Pirouette Rate Sports 540 degrees per second 3D 720 degrees per second AILERON Gyro Basic SETTING The AIL Gyro Basic menu contains all of the functions necessary to set up the CGY750 roll axis for operation Push MODE POIRE OAN key Use the mode keys to navigate the setting menus AIL Gyro Basic KI AIL Dir AIL Dir PNGr mal Mma Reverse 2 Gyro direction default Normal This parameter controls which direction the CGY750 roll axis will compensate when the helicopter rolls Pick the helicopter up and roll the helicopter to the right
72. rol during flight All components of the helicopter must be bal anced and operate in a smooth manner The newer gyro sensors are so sensitive and extremely accurate that even something as simple as a bad ball bearing can cause enough vibration to cause the sensor to read incor rectly Main and tail rotor blades must also be perfectly balanced Ensure that your engine is running smoothly and properly tuned If you feel that all of the criteria has been met then it is recommended to relocate the gyro sensor to a different position on the helicopter and test fly again to look for improvements SWASH SERVO INSTALLATION AND SETUP The CGY750 supports 6 different swash plate types as shown below O H4 00 ELE or AIL ELE ELE2 Swash Servo _ T Q Determine which of the swash plate types shown match your helicopter and install the swash plate servos per the diagram and per your helicopter s instruction manual LJ Your transmitter should be reset to the default settings and the swash plate type selected SWASH SERVO INSTALLATION AND SETUP with the transmitter should be set to Normal H 1 or single servo mode All CCPM mix ing 19 set up and handled with the CGY750 and the transmitter functions should not be used The expo function and dual rates can be used with the transmitter but everything related to the CCPM mixing should be set up and handled by the CGY750 Set your trans mitter AFR ATV and D R Swash fu
73. rve which direction each servo needs to move when the collective stick is moved towards positive col lective pitch If the servo is moving the wrong direction then press the data or key to reverse that specific servo within the GY750 Once the collective is operating in the correct direction check the cyclic controls If the cyclic controls operate in the wrong direction reverse the Swash AFR for that function within the CGY750 Swash Basic SETTING PIT Rev PIT Rev DRA HRA 8 Pitch servo reverse default Normal This setting is used to set the operational direc tion for the Pitch CCPM servo The easiest way to set up the CGY750 is to observe which direc tion each servo needs to move when the col lective stick is moved towards positive collective pitch If the servo is moving the wrong direction then press the data or key to reverse that specific servo within the GY750 Once the col lective is operating in the correct direction check the cyclic controls the cyclic controls operate in the wrong direction reverse the Swash AFR for that function within the CGY750 t ELE2 Kev ELE 2 Rev Normal Reverse 9 2nd Elevator reverse default Normal This setting is used to set the operational di rection for the 2nd Elevator CCPM servo only used for the H4 xx Swash plate types The easiest way to set up the CGY750 is to observe which direction each servo needs to move when the collective stick
74. ssary Sometimes mechanical design flaws or mistakes within the setup will cause interactions and it is best to remove these before flight AILERON ELEvaTOR GYRO SETUP Finishing the setup Using the T8FG T12FG T12Z and 14MZ Re mote Gain Functions roll pitch and yaw 1 Some Futaba transmitters contain auxiliary gain functions for aileron elevator and yaw Please refer to your transmitter s instruction manual Assign the GYR GYR AIL and GYR ELE channels within the transmitter Within the CGY750 S Bus Basic menu assign the AGN EGN and RGN to the appropriate channels 2 The gyro function within your transmitter should list all three gain channels Adjust ments can be made from within this function The gyro function can usually be assigned to various switches or conditions to offer greater adjustability Please refer to your transmit ter s instruction manual for further details 3 Initially the AIL and ELE gains should be set to 50 and the operating mode should be set to NOR Once the trim process has been com pleted the flight mode should be changed over to AVCS Z WARNING Verify that the gyro compensates in the cor rect direction for all three axis before flight If the compensation direction is incorrect the model will roll flip or pirouette uncontrollably at a very high rate AILERON ELEvaTOR Gyro SETUP Setting the CGY750 gains by using endpoints or manual adjustments 1 If y
75. tail rotor push rod Follow step 4 RUD Gyro Sv Limit to set the endpoint travel for each direction ensuring no binding is present Li Install the servo arm screw and place the linkage onto the control ball on the servo arm L Before proceeding verify that all of your settings are correct and check for binding throughout the entire range of servo move ment Push MODE wa 1 Start display Use the mode keys to navigate the setting menus RUD Gyro Basic t ServoTyrpINServolTypIServolyrp gt FRR Eee DG 1520 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 BLS251 S9256 S9251 DG 1520 BLS254 BLS257 S9254 S9257 RupDDER Gyro Basic SETTING Z WARNING Read your servo instruction sheet to deter mine the proper servo settings The servo type parameter within the CGY750 must match the type of servo you are using Incorrect setting may damage the CGY750 or the servo Incor rect setting may also result in a loss of control during flight f HAEL a Reverse 3 Gyro direction default Normal This parameter controls which direction the CGH750 yaw axis will compensate when the helicopter rotates Hold the tail rotor linkage over the linkage ball on the servo pick the heli copter up by the main shaft
76. tch to counteract torque when the tail rotor servo is centered With clockwise rotating main rotor blades this means 10 degrees of right tail rotor pitch will be neces sary to counteract torque In addition to this it will be necessary to use the tail rotor compensation or revolution mixing functions of your transmitter to help counteract torque Please see your transmitter instruction manual for more information on how to set this up If you decide to switch between Normal Mode and AVCS Mode in flight you must have the gyro re learn the center position after mak ing 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 gt AVCS gt Normal gt AVCS within one second The servo will center indicating that the new center position has been memorized GOVERNOR Basic SETTING This sets the governor s fundamental functions The menu 9 Servo limit point setting must be set first Push MODE key eee 1 Start ARY LAY CERTE The editing menus are scrolled by pushing the mode or key RPMset MINRPMSet AMNRPMSet f 1100rpm 1500rembeg 1850rem 2 Revolution setting range 1000 3000 rpm Setting the main rotor revolution This is calcu lated by engine revolution with the gear ratio of the main shaft e Using by 3position switch Make sure the display is changed to 1 2 3 by mov ing th
77. the instructions within the RUD Gyro Basic SV Limit section and set the servo limits for the tail rotor servo Hold the tail rotor linkage over the linkage ball to avoid damaging the servo Once the limits are set you can place the linkage onto the linkage ball When using AVCS mode the optimum setup is to have 0 of pitch with the tail rotor servo centered and use all of the available pitch range in the tail without binding L Turn the receiver power off to exit program ming mode and then turn the receiver power back on Once the gyro has completed initial ization move the tail rotor stick to the right on the transmitter and verify that right clock wise rotation tail rotor pitch is inputted to the tail rotor blades If left tail rotor pitch is inputted to the tail rotor blades then it will be necessary to reverse the tail rotor channel in the transmitter Q Pick the helicopter up by the main shaft and rotate the mechanics counter clockwise from the top The gyro should compensate by adding clockwise rotation pitch to the tail rotor blades If the gyro compensates by add ing counter clockwise rotation pitch to the tail rotor blades then it will be necessary to reverse the Gyro Direction setting within the gyro refer to the Gyro Basic Setting section earlier in this manual If you are going to fly AVCS Heading Hold mode exclusively then the rudder gyro setup is now complete BEFORE FLIGHT CHECKL
78. ting if it is taking place at hovering to idle up Use the data or key to adjust the value RUDDER Gyro EXPERT SETTING 13 Rudder histeresis RUD His 6 0 uS default 7 uS ranges 0 50 uS This adjusts the rudder stick null ranges Use the data or key to adjust the value 14 Gain tracking 0 default 0 ranges 20 20 This adjusts the gyro holding feeling during left and right pirouette Use the data or key to adjust the value 15 F F mixing F F Mix F F Mix F F Mix default off This selects the F F Feed Forward mixing ac tive It helps the gyro operation by adding pitch to rudder mixing before the gyro can sense move ment and improves the gyro performance F F mixing is handled within the CGY750 Do not attempt to use revolution or acceleration mixing within your transmitter as this will actually adjust the input signal to the gyro RUDDER Gyro EXPERT SETTING 16 F F mixing rate F F Rate L E 21 default 0 range 100 100 This parameter adjusts the F F mixing rate The L low and H high rates are adjustable individually Larger values will add more mixing as the col lective is moved away from center towards or pitch 17 F F mixing acceleration gain default 0 range 0 200 If the collective stick is moved quickly then the acceleration gain is used to increase the F F mixing rate to help compensate for this sudden change Use the
79. tion is enabled 6 Battery voltage This indicates the battery voltage The display will change to show LOW BAT once the voltage has fallen below the Battery fail safe voltage setting BFS 7 Setting Menus Pushing this button will exit the normal operating mode and enter the settings menu mode RPM display QB RUDA100 R 15120 The battery voltage display automatically changes to the engine RPM display once the engine 19 run ning and returns to battery voltage display once Home SCREEN the engine has stopped running The RPM display can be either the head speed or the engine speed depending on the setting in the revolution display mode setting found in the governor expert menu Home screen options When the home screen is shown the mode and keys can be used to cycle the bottom line through the following items Battery voltage Max RPM Engine runtime OLED display options Operating Mode Roll rate maximum display and Elevator rate maximum display 1 Maximum RPM Ge AILA 65 lal ERNE From the home screen press the mode button once to show maximum recorded RPM Mrpm The Mrpm value is maintained until you clear it by pressing the data or key for at least one second This function allows you to check for over speeding during flight 2 Engine runtime H RUDA100 OH15M2 From the home screen press the mode key twice to show the engine runtime display The time shown is
80. u would like available to the CGY750 Use the Data or key to make an adjustment If any of the functions operate the incorrect di Swash Basic SETTING rection then reverse the sign of the value For example 60 would have to become 60 All of the servo neutral and reversing adjustments should be made within the CGY750 and the transmitter functions should be left at the default values The AIL Rate and ELE Rate functions are de pendent on servo arm length and head geom etry so it will be necessary to use a pitch gauge to make adjustments For the cyclic controls it is recommended to start with 8 degrees of pitch change in any one direction Adjustments to this value can be made after the 1st test flight once you determine the cyclic rates and the overall gyro behavior The PIT Rate is the amount of collective pitch travel allowed and this value will be similar to what you normally fly other helicopters with A good starting range for Sport 3D and F3c is 10 to 12 degrees Beginners may want to change the negative collective pitch to 3 de grees instead of 10 12 Swash ring default 100 This function is used to prevent binding of the swash plate servos when the transmitter control stick is moved toward a corner for example full right and full aft cyclic The default setting is 100 This is considered normal for most helicopters In some cases you may have to de crease the value to prevent bi
81. um speed can be verified at the MAX speed display However this could show some unlocked main rotor condition which is not accu rate Reference The transmitter EPA function can also be used to change the point 1 and point 3 speed settings to a certain extent The amount of this change is pro portional to the difference between the point 1 and point 3 set speed and the point 2 set speed For example if point 1 is set to 1300rpm and point 2 is set to 1500rpm and the transmitter EPA is changed from 20 to 100 the point 1 speed will change from 1460 to 1300rpm The transmitter EPA function has very little effect on the point 2 speed setting Speed Point 2 Speed setting channel travel Neutral The speed changes linearly on a line connecting points 1 2 and 3 S BUS Basic SETTING Since S Bus sends all 18 channels may be lim ited by your transmitter over a single wire it is necessary to assign a CGY750 function such as AIL ELE or COL to each channel The channel assignments are performed within the S BUS Basic menu If a function is not going to be used then it must be set to INH For example if the AGN and EGN remote gain functions are not going to be used then set them to INH and the CGY750 will then allow you to make gain adjustments within the respective menu Z WARNING Always verify that the S Bus function assign ments match your transmitter function assign ments If any changes are ma
82. urate description of the difficulty Include the following in your note e Symptoms including when the problem occurred e System Transmitter Receiver Servos and model numbers e Model Model name e Model numbers and quantity e Your Name Address and Telephone number Send the respective items to the authorized Futaba Service Center Address below Futaba Service Center 3002 N Apollo Drive Suite 1 Champaign IL 61822 INTRODUCTION The Futaba CGY750 is a combined 3 axis head ing hold AVCS gyro and head speed governor in one box Its cutting edge MEMS Micro Electro Mechanical System sensor design ultra high speed processing speed and advanced PID control algorithm put it a quantum leap ahead of all other heading hold gyros in size weight and perfor mance The CGY750 has been optimized to work for flybarless helicopters FEATURES e Combined 3 Axis Gyro and Governor in one box e High speed operation and extremely low laten cies result in greater stability e Low profile small size and light weight e Small size of the gyro and governor controller 44 x 29 x 12mm 13 g e Utilizes a 128 x 36 dots graphical white color OLED Organic Light Emitting Display high brightness and contrast even in direct sunlight e Settings divided into Basic and Expert menus The basic setting is for initial setting and Expert setting is for more advanced settings e Firmware can be updated from a Windows based personal co
83. ximum roll rate recorded during flight This value is reset back to 0 when the CGY750 is powered up 1 Elevator rate maximum display Elev Max ee CIMd S Displays the maximum elevator rate recorded dur ing flight This value is reset back to 0 when the CGY750 is powered up WARNING Displa Governor warning display GE RUD A 1 Ox Rad AU n The warning symbol is displayed when the gov ernor is activated during power up Immediately switch to a condition that has the governor dis abled and the symbol will disappear When this WARNING DISPLAY warning symbol is shown the governor will be disabled until the condition has been turned off The engine must be started with the governor turned off Sensor error Sensorer Z WARNING The helicopter must remain perfectly still during the initialization process or a Sensor ER sensor calibration error may occur If an error was detected during initialization pow er the CGY750 down and let it rest for 60 sec onds Verify that the gyro sensor lead is properly connected to the CGY750 Power the CGY750 up again and allow the helicopter to remain still until the initialization has been completed If this problem persists please contact your re gions technical support center the contact in formation can be found in the beginning of this manual Low battery ZAAWARNING The Low Batt warning is displayed if the WARNING DISPLAY receiver batt

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