User manual FUTABA GY240

[. . . ] When the tail stops drifting, the control signal from the gyro becomes zero. If the cross-wind continues to cause the tail to drift in this state, the "stop" operation is repeated until the tail faces downwind. Operation of AVCS Gyro 3 SET CONTENTS The GY240 comes with the following accessories: GY240 Mini screwdriver (for adjustments) AVCS Gyro Conventional gyros send control signals to the rudder servo only when the tail of the helicopter moves. When the tail stops moving, the control signal from the gyro becomes zero. [. . . ] With a conventional gyro, when the helicopter encounters a cross-wind, the force of the cross-wind causes the tail of the Special Markings Pay special attention to the safety at the parts of this manual that are indicated by the following marks. Mark Meaning Procedures which may lead to a dangerous condition and cause death or serious injury to the user if not carried out properly. 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. 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. Symbol: ; Prohibited ; Mandatory 5 USE This section describes how to use the GY240. Mount and adjust the GY240 as described below. Flying Adjustment In the AVCS mode, the gyro automatically sets the rudder neutral position. Therefore, it is impossible to judge if the mechanical rudder neutral position changed. Consequently, during initial flight and when correcting the linkage, turn off the AVCS function and adjust the mechanical rudder neutral position. (Rudder neutral adjustment) 1 First, to adjust the rudder neutral trim, start with the AVCS on/off switch in the "off" position. Since this switch is close to the adjacent switches, switch it carefully. Push the white protruding part of the switch in the arrow (down) direction. Setting Precautions Always use the attached sensor tape to mount the gyro sensor. Always reinstall the sensor tape if it has started to separate or tear. When mounting the GY240, leave a small margin so that the gyro connection cable is not stretched tight. If the cable is stretched tight, the gyro will not display top performance. If the gyro is dislodged, the gyro may malfunction and is very dangerous. When used with a motor helicopter, mount the GY240 as far away as possible (at least 10cm) from the drive motor. This noise may interfere with the gyro sensor and cause erroneous operation. Mount the GY240 so that metal and other conductive parts do not touch the case of the GY240. The GY240 uses a conductive resin case to reduce static electricity and electromagnetic interference. Since the surface of the case is conductive, it may cause a short circuit. causes a connector to work loose during flight, the heli may crash. Operating Precautions Do not move the helicopter and the transmitter rudder stick from the neutral position during about 3 seconds (during initialization) when turning on the gyro power. When the power is turned on, the GY240 judges that the rudder stick is in the neutral position. Operating the rudder trim during flight will change the neutral position. For example, in the winter, do not fly immediately after removing the model from inside a heated car and in the summer, do not fly immediately after removing the model from inside an air conditioned car. [. . . ] At this time, hold the transmitter rudder stick in the neutral position and do not move the helicopter for approximately three seconds. 8 Hover the helicopter and adjust the gyro sensitivity to just before the helicopter begins to hunt. When hunting occurs, set to a lower value. For more information, see <OnePoint Advice>. 6 Try moving the rudder stick to the left and right, and check the direction of operation of the rudder servo. If the rudder servo moves in the opposite direction, use the transmitter reverse function to reverse it. <One-Point Advice> The gyro sensitivity also changes with the length of the servo horn. [. . . ]