User manual FUTABA GY701

[. . . ] INSTRUCTION MANUAL 1M23N23906 TABLE OF CONTENTS · Precautions ----------------------------------3 · Warranty and Repair Service (in U. S. A. ) --8 · Introduction ---------------------------------9 · Features --------------------------------------9 · Contents ----------------------------------- 11 · Specifications ----------------------------- 14 · Recommended Servos ------------------- 15 · Replacement and Optional Items ------- 15 · Connecting the GY701 to your Receiver 16 · LED Indicator Description -------------- 19 · Mechanics Preparation------------------- 20 · Opening Screen --------------------------- 22 · Home Screen ------------------------------ 23 · Warning Display -------------------------- 28 · Edit Screen -------------------------------- 30 · Gyro Basic Setting ----------------------- 32 · Gyro Sensor Installation ----------------- 34 · Tail Rotor Servo Installation and Setup-- 35 · Before Flight Checklist ------------------ 38 · Adjustments During the Test Flight ---- 39 · Using Normal Mode --------------------- 41 · Setting the Gain--------------------------- 42 · Governor Basic Setting ------------------ 44 · Mounting the Magnet and Sensor ------ 52 · Fuselage Setting Precautions ----------- 56 · Governor Operation ---------------------- 58 · Governor Speed Setting ----------------- 60 · S. BUS Basic Setting --------------------- 62 · Gyro Expert Setting ---------------------- 65 · Governor Expert Setting----------------- 74 2 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: DANGER - Procedures which may lead to dangerous conditions and cause death/serious injury if not carried out properly. WARNING - Procedures which may lead to a dangerous condition or cause death or serious injury to the user if not carried out properly, or procedures where the probability of superficial injury or physical damage is high. CAUTION - Procedures where the possibility of serious injury to the user is small, but there is a danger of injury, or physical damage, if not carried out properly. : Prohibited : Mandatory 3 PRECAUTIONS WARNING Failure to follow these safety precautions may result in severe injury to yourself and others. BEFORE EACH FLIGHT: Always check the transmitter and receiver battery voltage to ensure they have enough remaining capacity to complete the flight. [. . . ] Also be certain that your model's tail rotor drive train is up to the task. 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 F3C mode, the helicopter will achieve a 450 deg/sec pirouette rate. 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 of 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 being used. The gain for the Hold condition can also be much higher than other flight modes since the head speed is lower and the engine vibration is minimized. 39 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. 40 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. If you will be using the Normal Mode (also referred 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 pitch (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 necessary 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 making a trim change within the transmitter. To memorize the new center position simply flip the gain switch on the transmitter three times b e t w e e n N o r m a l M o d e a n d AV C S M o d e (Normal AVCS Normal AVCS) within one second. [. . . ] Recommended selection are, Middle-> glow engine, Moderate-> gasoline engine, Quick ->Brushless motor-. (5) Governor gain 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. [. . . ]