Futaba GY401_S9254 High-Response Gyro with S9254 Servo [GY401_S9254]

Futaba GY401_S9254 - GY401 Gyro w/SMM Technology + S9254 Digital Coreless High Torque

Price:

AUD$322.60

Brand:

Futaba

Model:

GY401_S9254

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R/C Models - System - Gyroscopes

Responsive tail control with Futaba GY401_S9254

The Futaba GY401_S9254 merges an SMM sensor gyro and the S9254 digital coreless servo to deliver quick, controlled tail inputs and steady yaw tracking. It is a practical choice for pilots wanting reliable performance without complicated hardware swaps.

Why the GY401 stands out

AVCS System: Automatically compensates for rudder trim shifts from changing conditions so the tail remains stable during dynamic flying.
SMM Gyro Sensor: Lowers the need for trim adjustments by sensing and correcting motion precisely.
Digital Servo Compatibility: DS mode is optimised for faster, cleaner responses when paired with Futaba digital servos.
Remote Gain and Mode Switching: Lets you tweak sensitivity and switch gyro modes from the transmitter for quick field adjustments.
Compact and Lightweight Design: Small footprint and reduced mass simplify installation on a wide range of helicopter frames.
Conductive Resin Case: Improves immunity to electrostatic and electromagnetic interference to keep control signals clean.

Specifications

Length (Gyro/Servo): 1.1" (27mm) / 1.6" (40mm)
Width (Gyro/Servo): 1.1" (27mm) / .79" (20mm)
Height (Gyro/Servo): .79" (20mm) / 1.4" (36.2mm)
Weight (Gyro/Servo): .95oz (27g) / 1.8oz (50g)
Torque: 47 oz-in
Speed: .06 sec/60°

For pilots upgrading tail systems, the Futaba GY401_S9254 offers a compact, interference-resistant package that balances quick response with straightforward transmitter-based tuning.

Does the GY401 require a special receiver protocol?

No special protocol is required for basic gyro operation. It interfaces through standard gyro channels, though features like remote gain use a transmitter channel to adjust settings.

Can I use AVCS for both indoor and outdoor flying?

AVCS is designed to handle a range of environmental changes, but you should tune gain appropriately for indoor hover versus outdoor windy conditions to prevent overcorrection.

What should I check if I see tail oscillation?

Confirm servo centring and torque, check for mechanical slop in linkages, reduce gyro gain slightly, and verify there is no binding in the tail boom or rotor head.

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