User manual FUTABA G190

[. . . ] · The contents of this manual are subject to change without prior notice. · This manual has been carefully written. Please write to Futaba if you feel that any corrections or clarifications should be made. Set Contents The G190 comes with the following accessories: G190 Mini screwdriver (for adjustments) G190 Ratings: (Integrated sensor type rate gyro) · Gyro sensor: piezoelectric sensor · Operating voltage: 4. 8 to 6. 0VDC · Current drain: 15mA at 4. 8V · Operating temperature range: -5 to +45ºC · Dimensions: 22. 2 x 22. 8 x 8. 9mm (except protrusion) · Weight: 6. 7g (including connector) · Functions: Sensitivity trimmer and LED monitor INSTRUCTION MANUAL Thank you for purchasing a G190 gyro, a rate gyro for small electric powered helicopters. [. . . ] Mount and adjust the G190 as described below. Flying Adjustment Initial adjustment Trimmer Operation · To make the G190 small and light-weight, a small trimmer is also used. Always operate the trimmer with the mini screwdriver supplied. 4 9 Lift off and hover, then adjust the rudder neutral position with the transmitter trim lever. Adjust the gyro sensitivity to just before the helicopter tail starts to hunt. Temporarily set the trimmer of the gyro's sensitivity approximately at 75%. · First, turn the trimmer fully clockwise. At this time, the position at which the trimmer cuts in is the 100% position. Set the cut-in position to the 75% position. 10 *For large deviation, use the fuselage linkage to adjust the rudder neutral position. Mounting to Fuselage Using the attached double-sided sponge tape, attach the G190 temporarily to the gyro-bed of a helicopter or a specified place. And be sure that the G190 should be mounted so that the direction of the G190 case is parallel to the main rotor shaft of the helicopter (perpendicular to the tailpipe). * Only required here is a temporary attachment as the final bonding on the correct direction will be made after confirmation of the direction. · Always use the attached double-sided sponge tape. · Cut it a little larger than the attachment surface of the G190. In case of mounted to gyro-bed In case of mounted to main-frame · Make sure that the surface of the fuselage on which you mount the gyro is wider than the corresponding surface of the gyro. *When hunting occurs, set to a lower value. *Adjust the sensitivity gradually while checking for hunting. <Servo Horn>: 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. <Mixing>: Where necessary, use the transmitter's revolution mixing (pitch to rudder mixing). Caution: Please note that the aircraft may become unstable in its behavior and blunt in responding to the gyro signal when the driving battery is low. 1 When turning on the power *Carry out the further tuning later while flying your helicopter. Precautions Mounting Precautions Always use the attached sensor tape to mount the G190. * The purposes are not only to fix the gyro firmly to the fuselage but also to prevent unnecessary vibrations of the fuselage from traveling directly to the gyro. * Sudden temperature changes will cause the G190's reference point 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. Allow the model to stand for about 10 minutes and turn on the power after the temperature inside the gyro has stabilized. Also, if the gyro is exposed to direct sunlight, the temperature may change suddenly. Take suitable measures so that the gyro is not exposed to direct sunlight. 5 Pull throttle stick to idle position. [. . . ] Should the problem continue, request repair service as follows: Describe the problem in as much detail as possible and send it with a detailed packing list together with the parts that require service. · Symptom (Including when the problem occurred) · System(Transmitter, Receiver, Servo's and model numbers) · Model (Model name) · Model Numbers and Quantity · Your Name, Address, and Telephone Number. If you have any questions regarding this product, please consult your local hobby dealer or contact the Futaba Service Center. Gyro operation direction If the rudder servo moves to the left when the nose of the helicopter turned to the right, the gyro direction is correct. [. . . ]