Futaba GY401_S9254 Precision Gyro and S9254 Servo Combo  [GY401_S9254]

Helicopter tail accuracy with Futaba GY401_S9254

The Futaba GY401_S9254 combines an SMM gyro core with the S9254 digital coreless servo to give model helicopter pilots reliable tail tracking and responsive 3D control. It is built for pilots who need predictable behaviour and easy setup when upgrading their rotor head electronics.

Genuine GY401 gyro highlights

• AVCS System: Actively cancels rudder trim shifts caused by changing conditions, helping maintain steady tail control during aggressive 3D maneuvers.
• SMM Gyro Sensor: Uses precise motion sensing to cut down on in-flight trim corrections and keep yaw inputs consistent.
• Digital Servo Compatibility: DS mode is tuned for digital servo response, improving speed and accuracy when used with Futaba digital units.
• Remote Gain and Mode Switching: Allows gain and mode adjustments straight from the transmitter, so pilots can swap between AVCS and normal modes without touching the airframe.
• Compact and Lightweight Design: Dense mounting and small footprint make installation simple even on tight heli frames.
• Conductive Resin Case: Provides extra shielding to reduce electrostatic and electromagnetic interference around sensitive electronics.

For hobbyists looking to tighten tail control and step up 3D responsiveness, the Futaba GY401_S9254 delivers a compact, interference-resistant solution that balances precision with straightforward transmitter tuning.