INSTRUCTION MANUAL 1M23N23906
TABLE OF CONTENTS • Precautions ----------------------------------3 • Warranty and Repair Service (in U.S.A.
TABLE OF CONTENTS Gyro Governor : Instructions for gyro function : 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: ｎDANGER - Procedures which may lead to dangerous conditions and cause death/serious injury if not carried out properly.
PRECAUTIONS ｎWARNING Failure to follow these safety precautions may result in severe injury to yourself and others. s 2EAD THROUGH THE ENTIRE MANUAL BEFORE OPERATing this product. BEFORE EACH FLIGHT: ｊ Always check the transmitter and receiver battery voltage to ensure they have enough remaining capacity to complete the flight. ｊ Always exit programming mode before attempting to fly the model. ｊ Only use the GY701 with a 2.4GHz system such as the Futaba FASST system, or a PCM system.
PRECAUTIONS ｊ Verify that the gyro is operating in the desired mode. ｊ Verify that the gyro mounting pads are in good condition. ｊ Verify that the gyro wires are not contacting the frame of the helicopter. ｊ The servo type parameter within the GY701 must match the type of servo you are using. Incorrect setting may damage the GY701 or the servo, possibly resulting in a loss of control during flight. ｊ Always ensure that there is some slack in the gyro cables to help maximize performance.
PRECAUTIONS ｊ When operating the gyro in AVCS Mode, all tail rotor compensation and revolution mixing must be disabled and any tail rotor offsets for flight modes must be disabled. ｊ When the GY701 is operated in AVCS mode the tail rotor servo will not center when the stick is released. This is normal operation for AVCS mode. The servo may also move to the extent while the model is being carried out to the flight line.
PRECAUTIONS ｊ When using the condition hold function, transmitter’s function), always set the throttle servo maximum operating point to less than the point at which the governor is turned on. Depending on the conditions, this setting will turn on the governor and prevent the engine from exceeding the set speed even when condition hold is set. ｊ At the beginning of flight, keep the governor in the off state by setting the throttle stick to maximum slow side.
WARRANTY & REPAIR SERVICE (IN U.S.A.) If any difficulties are encountered while setting up or operating your GY701, 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 telephone number listed below: www.futaba-rc.com or www.hobbyservices.
INTRODUCTION © The Futaba GY701 is combined heading 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 performance. The GY701 has been optimized to work for model helicopter competition. FEATURES • Combined Gyro and Governor in one box.
FEATURES • Gyro section • Advanced and adaptive PID operation is utilized • Small and low profile gyro sensor. 2 colors LED are installed on the top surface. Using the Aluminum Alloy metal case. 21 x 21 x 8mm, 14.5 g • Wide operation dynamic ranges up to +/- 1,200 deg/sec. • 3 kinds of servo type are supported • 3D and F3C operation mode is selectable • The Feed forward operation is utilized. Pitch signal can be added to the gyro operation. (F/F mixing, only S.
CONTENTS Your GY701 includes the following components: Type of set s 'YRO 'OVERNOR SET W ",3 s 'YRO 'OVERNOR SET s 'OVERNOR SET s 'YRO SET SET CONTENTS GY701 Control Amp *Mini Screwdriver *Dust Covers (x3) X X X Gyro Sensor *Mounting Pads (x3) X --- X X Governor Sensor *Sensor Mounting Hardware *Magnet (x2) --- X X BLS251 Servo *Servo horn and mounting parts --- --- --- X Extensions (Black/Red) 1 X: supplied X 1 ---: not supplied 11 X 2 2
CONTENTS GY701 Control Amp Dust Cover Adjustment Screwdriver Mounting Pads Gyro Sensor 2mm Thick (three) Governor Sensor Magnet 12
CONTENTS Sensor Mounting Stay SENSOR & Sx Tx GV-1 SENS. THRO MXTR r.p.m 1 r.p.m 2 r.p.m 3 m.trim GOV on GOV off on / off m.trim r.p.
SPECIFICATIONS Width (Controller): (Gyro sensor): (Speed sensor): Length (Controller): (Gyro sensor): (Speed sensor): Height (Controller): (Gyro sensor): (Speed sensor): Weight (Controller): (Gyro sensor): (Speed sensor): Maximum* Operating Voltage: Current Drain: Selectable Servo Frame: Center Pulse Width: Flight Mode: Control Resolution: Speed stability accuracy: Speed Control Range: Operating Temperature: Control System: Sensor: Angular Velocity Range: 1.14in [29mm] 0.83in [21mm] 0.30in [7.5mm] 1.
RECOMMENDED SERVOS .
CONNECTING THE GY701 TO YOUR RECEIVER OLED Display s $ISPLAYS THE SET DATA AND operation status. (1) (2) (3)-(6) (7) (8) Edit Keys s 5SED WHEN SETTING DATA s /PERATED BY PUSHING WITH THE accessory mini screwdriver. s #ONNECT THE '9 AND THE receiver with the supplied exTENSIONS ; TO = When using an S.BUS reCEIVER TO ARE NOT CONnected. s '9 POWER REQUIREMENT 4.
CONNECTING THE GY701 TO YOUR RECEIVER (1) Gyro: Gyro s #ONNECT THE GYRO SENSOR *Insert the sensor connector until it is firmly locked. (2) Rsen: Governor s #ONNECT THE SPEED SENSOR Receiver (3) Rin/SB: s 3 "53 RECEIVER #ONNECT TO THE 3 "53 OUTput of the receiver. s /THER THAN 3 "53 RECEIVER #ONNECT TO THE rudder channel output.
CONNECTING THE GY701 TO YOUR RECEIVER Connect the supplied extensions to the GY701 connecter. Route the wires through the helicopter mechanics and connect them to the appropriate receiver channels. To determine the appropriate receiver channels please check your transmitter’s instruction manual. Using wire mounts, wiring fixtures molded into the helicopter, or hook and loop material, route the extensions to the receiver.
LED INDICATOR DESCRIPTION Slow Flash: 1/2 Second or longer Fast Flash: 1/4 Second or shorter LED Indicator CONDITION LED INDICATOR DESCRIPTION Initialization Red Double Flash No Receiver Pulse or Sensor Error Slow Blue Flash Warm-Up Fast Blue Flash Sensor Initialization Slow Red Flash Governor Warning P r o g r a m - Blue Single Flash Parameter Programming ming Mode Slow Blue Flash Rudder Limit Setting Mode Operating Solid Blue Normal Mode, Ready for Flight Solid Red AVCS Mode, Ready for Flight Slow Violet
MECHANICS PREPARATIONS ｎWARNING ｊ Newer high end servos and other radio equipment are capable of placing large demands on the power systems in use today. When using a regulator you must ensure that the regulator is capable of delivering the current demands of the equipment you have selected. In addition to this make sure the wiring and switch you have selected are capable of handling high current draws.
MECHANICS PREPARATIONS s 6IBRATION WILL AFFECT THE '9 S OVERALL PERFORmance. All rotating components on the helicopter should be balanced to minimize vibrations in mIGHT %NSURE THAT YOUR MOTOR IS RUNNING SMOOTH and all vibrations have been addressed before installing and test flying the GY701.
OPENING SCREEN The GY701 starts the initializing process when powered up. After it is finished initializing, the GY701 starts initializing and moves to the home screen. Boot up display The OLED shows the screen below. The upper line indicates the identification code of the GY701 and the line below indicates the firmware version. Initializing display The helicopter images are displayed during initializing.
HOME SCREEN After finishing the initialization sequence, OLED changes the display to Home screen. There are 3 kinds of the Home screen related by the operation mode. The home screen shows the information follows. Initial Home screen •Gyro+Governor mode 2. Stop boosting 3. Gyro working mode 1. Neutral compensation 4. Gyro gain 5. on/off switch 8. Orientation indicator 6. Yaw rate comp. 7. Battery voltage •Gyro only mode •Governor only mode 9. Setting revolution 1.
HOME SCREEN 3. Gyro working mode Gyro This indicates the gyro working mode is either AVCS or Normal mode. The inverse “A“ character is displayed when the rudder neutral is offset. At the AVCS mode At the normal mode Neutral offset at AVCS mode At the AVCS mode, move the rudder stick more than 2 times left and right full within the period of 1 second and return the stick to neutral position, the rudder servo memorized the neutral position. The OLED shows the "--------" display at this condition.
HOME SCREEN 5. on/off switch Governor This shows the switch condition of the governor. The governor is active when ”On” displayed. 6. Yaw rate comp. Governor This indicates the revolution compensation when the pirouette is active. No display shows when the function is inhibited. 7. Battery voltage This indicates the battery voltage. The Low battery is displayed at below 3.8 volts. 8. Orientation indicator This acts as the operation guide.
HOME SCREEN when the engine stop. The revolution mode can be selected either during main rotor revolution or engine revolution. The rpm character starts blinking slowly when the governor starts operating and blinking fast when the revolution reaches +/2% of the setting revolution. The rpm character changes to inverse character as the revolution increases to within +/- 1% of the setting when the revolution is locked.
HOME SCREEN the data + or – key for more than one second. 2. Engine runtime Governor This displays the engine runtime integration. The display is changed to runtime mode by pushing mode + key 2 times from home screen. The display unit will show seconds until 100 hours is reached xxHxxMxx, over 100 hours, minutes as xxxxHxxM. The display is reset by pushing data + or – key for more than 1 second. 3. OLED display mode [default: Saver] This selects the OLED display mode.
HOME SCREEN 5. Operation mode [default: Gyro+Gov] This sets the operation mode of the GY701. Set to “Governor” when the gyro sensor is not used and set “Gyro” when the governor sensor is not used. Set “Gyro+Gov” when the both gyro and governor sensor are installed. Mode is changed by pushing the data + or – key. The home screen is changed after changing the operation mode. The “SensorER” is displayed when the gyro sensor is not installed and the operation mode is set “Gyro” or “Gyro+Gov” mode.
WARNING DISPLAY Input error Gyro This indicates no rudder or throttle signal input. The GY701 does not work in this condition. Sensor error Gyro The gyro sensor is not working. The gyro does not work in this condition. Low battery It displays as the battery voltage becomes less than 3.8 v. If low battery is recognized for more than 1 second, the governor goes info low battery condition and the governor operation is stopped.
EDIT SCREEN The edit mode is changed to Gyro basic, Governor basic, or S.Bus basic mode by pushing the data+ or- key. These modes set the basic operation for initial flight. By pushing the mode + or – key for more than 1 second at the gyro or governor screen, the editing mode is changed to the expert mode, more precise setting can be done in this mode. Pushing the mode+ or – key for 1 second again, the editing menu will return to basic menu.
EDIT SCREEN Push DATA +/– key Push MODE +/– key Max. revolution Home screen Engine runtime OLED display mode LED display mode Operation mode Gyro Basic Gyro Expert Governor Basic Governor Expert S.
GYRO BASIC SETTING This sets the gyro’s fundamental functions. The menu (4) Servo limit point setting should be set first. Push MODE +/– key (1) Start display The editing menus are scrolled by pushing the mode + or – key. (2) Servo type [default: DG:1520] Selection of the servo type to be used.
GYRO BASIC SETTING ｎWARNING ｊ Verify that the gyro compensates in the correct direction before flight. If the compensation direction is incorrect the model will pirouette uncontrollably, at a very high rate. (4) Limit setting [default: 100%, setting range: 50 ∼ 150%] Adjusting the maximum servo throw. Set the amount to limit the rudder throw. Move the rudder stick right (left) maximum. At this point, increase or decrease the movement by pushing the data+ or – key.
GYRO SENSOR INSTALLATION The gyro sensor should be mounted on a rigid platform, at least 6in [152mm] away from a Nitro 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 instructions for recommended mounting locations. Installing the gyro sensor The GY701 is supplied with three 2mm Mounting Pads. When mounting the gyro in a larger electric or .50 through .
TAIL ROTOR SERVO INSTALLATION AND SETUP Following your transmitter instructions, program your transmitter as follows: Enable the gyro function within the transmitter. Set the gyro mode to AVCS (GY) within the transmitter. Set the remote gyro gain to 70% AVCS in the transmitter for the Normal and Hold flight conditions and use 40% AVCS for all idle up conditions. See “Setting The Gain” section later in this manual for more details. Set the Tail Rotor ATV/EPA to 100% for both left and right.
TAIL ROTOR SERVO INSTALLATION AND SETUP 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 “Gyro Basic Setting” mode and go to parameter (4) “Servo Limit Point Setting”. While in the servo limits parameter the servo will remain centered. 90° Place an appropriate servo arm onto the servo and ensure that it is perpendicular to the tail rotor pushrod as shown.
TAIL ROTOR SERVO INSTALLATION AND SETUP Follow the instructions within the “Servo Limit Point Setting” 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.
BEFORE FLIGHT CHECKLIST Transmitter and Receiver batteries are fully charged. The gyro mounting pads are in good condition. The gyro wiring has some slack in it and all wires are clear of the main frame. Power on the transmitter and receiver. Allow the gyro to initialize. The GY701 servo type parameter matches the servo you are using. The Tail rotor servo arm is perpendicular to the pushrod and the pitch slider is centered. The servo does not bind when full left or full right tail rotor is applied.
ADJUSTMENTS DURING THE TEST FLIGHT ｎWARNING ｊ Always make small (1%) adjustments to the tail ROTOR $ 2 OR %0! ONCE THE VALUE EXCEEDS Over 100%, it is possible to exceed the sensor’s !NGULAR 6ELOCITY 3ENSING 2ANGE PER second). The gyro will then no longer control the pirouette rate or consistency. The pirouette rate will be extremely fast. If you experiment with the ultra-fast pirouette rate, make sure that your flight battery and fuel tank are secure.
ADJUSTMENTS DURING THE TEST FLIGHT 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.
USING NORMAL MODE 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 performance benefits of AVCS mode. When using AVCS mode all trimming of the tail is automatically handled by the gyro. If you should decide to use Normal Mode than all trimming and mixing must be setup by you.
SETTING THE GAIN Most modern computer transmitters will have a gyro function built into them. If this is the case, please refer to your transmitter’s instruction manual. Most modern gyro functions will allow you to set the mode of operation and the gains for several flight conditions. The use of these functions is strongly encouraged.
SETTING THE GAIN If your transmitter does not have a Gyro function built in then it will be necessary to use the ATV or EPA function to control the gain. The Gyro Gain channel will generally be assigned to a switch which provides two gain values. Simply set the ATV or EPA for the gyro channel to the desired gain value and set the Gain Switch to the desired mode of operation.
GOVERNOR BASIC SETTING This sets the governor’s fundamental functions. The menu (9) Servo limit point setting must be set first. Push MODE +/– key (1) Start display The editing menus are scrolled by pushing the mode + or – key. (2) Revolution setting [range: 1000 ∼ 3000 rpm] Setting the main rotor revolution. This is calculated by engine revolution with the gear ratio of the main shaft. • Using by 3position switch Make sure the display is changed to 1, 2, 3 by moving the switch.
GOVERNOR BASIC SETTING (3) Gear ratio [default: 8.00, range: 3 ∼ 30] Input the main rotor gear ratio by pushing the data + or-key. Notes: s )F THE GEAR RATIO IS NOT PROPERLY SET THE SET speed and actual engine speed will be different. s 4HE GEAR RATIO SHOULD BE GIVEN IN THE HELIcopter instruction manual.
GOVERNOR BASIC SETTING (4) Servo selection [default: Analog] Select the throttle servo type. Digital servos offer the best response. The type is changed by pushing data + or – key. ｎWARNING ｊ This parameter must match the type of servo you are using. Incorrect setting may damage the GY701 or the servo, possibly resulting in a loss of control during flight. (5) Stick switch [default: 30%] The governor can be activated by throttle stick position.
GOVERNOR BASIC SETTING (Governor operating point) Set speed Set point or more and 60% of set speed s 4HROTTLE STICK SET TO LEAST THE SET POINT FROM SLOW SIDE AND IS ENGINE RUNNING AT OR MORE OF set speed ON s 4HROTTLE STICK HELD AT THE SET POINT OR more 2EMAINS /.
GOVERNOR BASIC SETTING Invalid display (at PWM) (6) Governor on/off switch [default: Inhibit] It selects the governor activate switch if addiTIONAL SWITCH IS USED 0USHING THE 3%4 $ATA key activates the function. The on/off direction IS CHANGED BY PUSHING THE 3%4 KEY AGAIN 4HE FUNCTION IS INHIBITED BY PUSHING THE 23%4 $ATA key. This function is only available at S.Bus connection. “Invalid” is displayed at PWM connection. When governor turned on and off by switch (S.
GOVERNOR BASIC SETTING (7) Battery failsafe setting [default: Inhibit] The governor goes into the failsafe mode WHEN THE BATTERY VOLTAGE IS BELOW V 7HEN activated, the governor is deactivated and the throttle servo is moved to B/FS position. Move the throttle stick to idle position, the B/FS condiTION IS DEACTIVATED FOR SECONDS AND RETURNED TO " &3 AFTER SECONDS HAS PASSED Move the throttle stick to B/FS position as desired, push set key to confirm the setting.
GOVERNOR BASIC SETTING (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 is set first, then high position guided by the display, push the data + or – key to memorize.
GOVERNOR BASIC SETTING (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.
MOUNTING THE MAGNET AND SENSOR Modify the cooling fan and install the accessory magnet and attach the magnetic sensor to the engine at the position shown below. Cooling fan Magnet (Embedded in cooling fan.) Sensor (Attached to engine flange through a stay.) When installing the sensor magnet to the muffler side, also refer to the needle side mounting. Magnet operating side check Bring the magnet near the end of the sensor and check the operating side.
MOUNTING THE MAGNET AND SENSOR Cooling fan modification Drill a hole in the fan at the magnet mounting position. Make the hole about 4.1mm in diameter and 1.5 to 1.7mm deep. Embed the magnet in this hole in the direction 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.
MOUNTING THE MAGNET AND SENSOR between the sensor and magnet can be made 1 to 2mm. Tighten the sensor stay together with the engine mounting flange. (Temporary assembly) 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. Install the sensor to the sensor stay using the accessory screws and washers. Tighten the sensor stay together with the engine using the engine mount screw.
MOUNTING THE MAGNET AND SENSOR 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.
FUSELAGE SETTING PRECAUTIONS Throttle servo linkage precautions To effectively use the governor, observe the following precautions when connecting the servo linkage. 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%. The governor will not operate at throws lower than 50%. Fly with the governor turned OFF and adjust the needle so that the engine smoothly reacts to movement of the transmitter stick.
FUSELAGE SETTING PRECAUTIONS different from that with a normal muffler. Adjust 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 carburetion to be linear.
GOVERNOR OPERATION Governor operation The GY701 operates from 1000 to 3000rpm main rotor speed. However, the engine must be running at the set speed. The GY701 turns off the governor when the engine is starting or idling. * Governor operation: Operation that stabilizes the engine 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. The on/off switch conditions are set to off during power on.
GOVERNOR OPERATION has changed. Deviation from set speed: The GY701 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.
GOVERNOR SPEED SETTING The GY701 is used by connecting the “rpm” input to the governor speed setting channel of your system. When using an independent governor on/off switch, activate the “(6) Governor on/off switch” funtion within the “Governor Basic Setting” section earlier in this manual. (S.BUS connection only) Direct set by transmitter on Gov. mixing When governor mixing as in the T14MZ and T12FG is used to switch the RPM of the rotor head speed.
GOVERNOR SPEED SETTING GOVERNOR TO s 4HE MAXIMUM SPEED CAN BE VERIlED AT THE -!8 speed display, however this could show some unlocked main rotor condition which is not accurate. Speed 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 proportional to the difference between the point 1 and point 3 set speed and the point 2 set speed.
S.BUS BASIC SETTING This sets the function of the channel of the S.Bus connection. It is required with the use of the S.Bus compatible receiver. The wiring from receiver to servos is made simple by using the S.Bus connection, only one main S.Bus wire is connected to receiver and GY701 can complete the operation. In addition, governor on/off switch function, F/ F mixing can be available through the S.Bus connection. At the PWM connection, this function is invalid. When not using an S.
S.BUS BASIC SETTING (2) S.Bus setting: Rudder channel [default: 4ch] Push data + or – key to match the transmitter rudder channel. (3) S.Bus setting: Gyro gain [default: 5ch] Push data + or – key to match the transmitter gyro gain channel. (4) S.Bus setting: Throttle channel [default: 3ch] Push data + or – key to match the transmitter throttle channel. (5) S.
S.BUS BASIC SETTING (6) S.Bus setting: GOV. on/off channel [default: 8ch] Push data + or – key to match the transmitter governor on/off channel. (7) S.Bus setting: Pitch channel [default: INH] Push data + or – key to match the transmitter pitch channel. (8) S.Bus data reset This resets the S.Bus connection channel to DEFAULT 4HE h%XEC v IS DISPLAYED BY PUSHING data + or – key for confirmation.
GYRO EXPERT SETTING This sets the detail of the gyro function for the expert modeler. Push the mode + or – key for more than one second on the Gyro Basic menu, to go into the Gyro Expert menu. Push mode + or – key for more than one second again on the Gyro Expert menu to be returned to the Gyro Basic menu. (1) Start display Push mode + or – key, the editing menu will scroll. Pushing mode + or – key for more than one second to go, back to the gyro basic menu.
GYRO EXPERT SETTING (4) Rudder exponential default: -60% (F3C-AVCS), -40% (F3C-Normal), -20% (3DAVCS), -20% (3D-Normal) ranges: -100% ∼ +100% This sets the feeling of the rudder control. Decreasing the rate to minus, the rudder control is softer, and is quicker when the value is increased to plus side. Pushing the data+ or – key, the value is changed. (5) Rudder delay mode default: Function This selects the rudder delay mode either Function or Constant.
GYRO EXPERT SETTING (7) Control delay Out default: F3C=10, 3D=12 ranges: 0 ∼ 20 This sets the rudder control delay of moving to neutral from right or left side. It can adjusts left and right individually. Adding to the value, the control feeling will be mild. Pushing data+ or – key, the value is changed. (8) Stop delay default: 120% ranges: 100% ∼ 400% This sets the rudder delay of the tail stop motion. It improves the tail stop bounce to adjust the value.
GYRO EXPERT SETTING (10) Pirouette speed default: 450 deg/sec (F3C), 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 pirouette speed of the rudder. When this value exceeds 1200 deg/sec, the gyro is out of control, the pirouette speed is very quick and this can be a dangerous situation.
GYRO EXPERT SETTING Decreasing this value may stop tail hunting if it is taking place at hovering to idle up. Pushing data+ or – key, the value is changed. (13) Rudder histeresis default: 6 uS ranges: 0 ∼ 50 uS This adjusts the rudder stick null ranges. Pushing data+ or – key, the value is changed. (14) Gain tracking default: 0 % ranges: -20% ∼ +20% This adjusts the gyro holding feeling during left and right pirouette. Pushing data+ or – key, the value is changed. (15) F/F mixing (S.
GYRO EXPERT SETTING Separate the pitch signal in the transmitter, and input this signal to the GY701. To do that, make the programmable mixing as pitch-> AUX, and input AUX signal to the GY701. This function is only available by the S.Bus connection. Invalid is displayed in PWM connection. Pushing data+ or – key, the mode is changed. (16) F/F mixing rate default: 0 % range: -100% ∼ +100% It adjusts the F/F mixing rate. It can adjust low or high pitch rate individually from zero pitch point.
GYRO EXPERT SETTING This setting must be done when F/F mixing is used. (19) Pitch low setting default: 1940 uS This sets the minimum pitch point of GY701. Move the pitch stick to minimum pitch, push data+ or – key. The minimum pitch signal is memorized in the GY701. The display shows ！ mark at the setting point. This setting must be done when F/F mixing is used. (20) Pitch high setting default: 1100 uS This sets the maximum pitch point of GY701.
GYRO EXPERT SETTING key, the mode is changed. (22) Neutral compensation default: ON (F3C), Off (3D) This function works to recall the neutral point of the rudder servo for improving tail stop motion. To use this function effective, hover the helicopter for about one second, and memorize the neutral point. If using a 3D helicopter, the tail movement is often very quick, this function may not work as well. Check the function to see if it works correctly.
GYRO EXPERT SETTING (25) Gyro data reset It resets the gyro parameter to the default setting. The “Exec.??” is displayed by pushing data + or – key for confirmation. Push data+ or – key again, the reset process is done and displayed “-Exec.—“ and return to the start display. Pushing mode+ or – key during confirmation display, the reset process is aborted.
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 Expert 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 Push mode + or – key, to scroll through the editing menu. Pushing mode + or – key for more than one second, brings you back to governor basic menu.
GOVERNOR EXPERT SETTING (3) Revolution display mode 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 default: Middle This selects the governor operation response. Select the best match for your engine type. Pushing data+ or – key, the mode is changed. Recommended selection are, Middle-> glow engine, Moderate-> gasoline engine, Quick ->Brushless motor-.
GOVERNOR EXPERT SETTING (6) Throttle data mode default: Optimize This selects the throttle input operation. Pushing data+ or – key, the mode is changed Optimize: GY701 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 revolution. It is recommended for electric motors. Tx.Curve: GY701 uses the exact throttle input from the transmitter.
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 default: 5 range: 2 ∼ 20 This sets the delay during the starting of the governor. Pushing data+ or – key, the value is changed. (10) Low limit at hovering 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.
GOVERNOR EXPERT SETTING This resets the governor parameter to default setting. The “Exec.??” is displayed by pushing data + or – key for confirmation. Push data+ or – key again, the reset process is done and displayed “-Exec.—“ and return to the start display. Pushing mode+ or – key during confirmation display, the reset process is aborted. FUTABA CORPORATION Phone: +81 475 32 6982, Facsimile: +81 475 32 6983 1080 Yabutsuka, Chosei-mura, Chosei-gun, Chiba 299-4395, Japan ©&54!"! #/20/2!4)/.
