Futaba GY611_S9256 Matched Tail Gyro GY611 with S9256 Digital Servo Set  [GY611_S9256]

Matched tail control components for RC rotorcraft

The Futaba GY611_S9256 pairs the GY611 yaw-rate control amp with the S9256 digital servo to create an integrated tail stabilisation solution for radio control helicopters. The GY611 implements a 12-bit A/D front end and a microcomputer control loop to limit neutral drift, while the S9256 provides a narrow-pulse compatible digital drive and a cooled Alumite housing for better thermal behaviour.

The set emphasises the sensor-to-servo signal chain: SMM silicon micro machining in the GY611 and AVCS angular vector control deliver consistent angular velocity sensing and reduced output drift, and the S9256 supplies quick, protocol-compatible servo actuation. Proper mounting and stepwise tuning will reduce the need for rudder trims in normal flight.

Install this Futaba set as an RC tail stabilisation package: fit the sensor and amp near the tail assembly using the included mounting materials, power the servo from a stable 4.8V receiver battery, and follow the manual to set endpoints and tune gyro gain incrementally for neutral rudder performance.