User manual FUTABA GY240

[. . . ] When the tail drifts, the gyro generates a control signal that stops the drift. 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. This is called the "weathervane" effect. [. . . ] 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. The drive motor generates strong electromagnetic noise. 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. Never use the transmitter rudder trim in the AVCS mode. 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. Sudden temperature changes will cause the neutral position to change. 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. [. . . ] 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. If the sensitivity is too low, lengthen the servo horn. Conversely, when hunting does not stop, shorten the servo horn. <Other Precautions> · To improve the tail control characteristic, a delay function is added to the rudder control signal from the transmitter. [. . . ]