User manual FUTABA GY601

[. . . ] AVCS GYRO GY601 INSTRUCTION MANUAL YAW-AXIS STABILIZER FOR MODEL HELICOPTER (RATE GYRO) 2 Thank you for buying a GY601 AVCS gyro. Before using your new gyro, please read this manual thoroughly and use the gyro properly and safely. After reading this manual, store it in a safe place. FOREWORD The GY601 gyro is an AVCS (Angular Vector Control System) rate gyro developed for model helicopter competition. [. . . ] The display automatically changes to A or B according to the direction of the rudder stick and the gain of each direction can be set. This function is used when tracking rudder operation gain between the AVCS and NOR modes. Control Delay I Initial value : 0% Sets the delay when the rudder stick was pushed operated. Rudder stick left and right can be set separately. Control Delay D Initial value : 0% Sets the delay when the rudder stick was returned. Rudder stick left and right can be set separately. 18 DATA SETTING Gain Tracking Initial value : +0% Adjusts left and right tail braking tracking. For example, when there is a sense of hunting when stopping left pirouette or the helicopter drifts when stopping right pirouette, shift Trk in the + direction. In the opposite case, shift Trk in the - direction. Operation Mode Setting Initial : CMT Sets the gyro operation mode. In the NOR mode, both G1 and G2 operate in the AVCS mode. In the CMT mode, G1 operates in the AVCS mode and G2 operates in the NOR mode. In the NOR mode, the GY601 operates the same as an ordinary gyro. In the AVC mode, the GY601 always operates in the AVCS mode. In the CM mode, the GY601 can be used in both the AVCS and NOR modes. DATA SETTING Flight mode Initial value : F3C 19 Switches the flight mode. The F3C mode emphasizes tail suppression and stop. The 3D mode slightly sacrifices tail suppression and stop, but lets you control pirouette speed completely proportional with the rudder stick operation amount and is suitable for 3D flight. <3D mode steering angle setting> During 3D mode setting, the transmitter rudder steering angle is set to 100% and approximately 500º/second high pirouette speed. Therefore, initially set the transmitter rudder steering angle to a low value so that the tail can be safely controlled. (About 70%) The pirouette speed is proportional to the rudder steering amount without regard to the gyro sensitivity. 20 DATA SETTING AVCS Sense Initial value : 100% Adjusts the rudder control characteristic in the AVCS mode. Check the rudder operation feeling and stopping characteristic and adjust. When the flight mode (page 19) is the 3D mode, this value becomes the pirouette standard value. Linkage Limit Setting Initial value : 100% Sets the rudder servo travel limit. Operate the rudder stick and adjust the rudder servo travel limit by pressing the +/- key so that the servo moves to the maximum linkage position. Use the same procedure to set both the left and right limits . When setting, move the servo substantially so that the rudder angle automatically becomes 200% and limit setting is easy. A or B is displayed for the right and left directions. [. . . ] If " " is displayed, display "A" by operating the rudder trimmer for that flight condition. 9 Rudder neutral position check In the AVCS mode, the rudder servo neutral position is unknown. Check the neutral position by switching the GY601 to the NOR mode, or by moving the rudder stick to the left and right at least three times at high speed and immediately returning the stick to the neutral position. This temporarily resets the rudder servo. INSTALLATION AND ADJUSTMENT 37 Flight Adjustments 1 In the AVCS mode, turn on the transmitter power, then turn on the gyro and receiver power. This reads the rudder neutral signal at the GY601. ·Never move the helicopter or rudder stick during the approximately three seconds that the -Hello- display blinks. 2 Hover in the Normal mode and adjust the rudder neutral position. ·In the AVCS mode, the rudder neutral position is automatically set, and linkage changes cannot be verified. [. . . ]