GY401+S9257 Futaba AVCS Gyro and S9257 Servo Kit for RC Electric Helicopters  [GY401+S9257]

Overview: GY401 AVCS gyro and S9257 standard servo

The Futaba GY401 AVCS gyro with the paired S9257 standard servo is supplied as a control package tailored for electric RC helicopters. AVCS with SMM sensing aims to reduce trim drift and maintain heading hold, while the S9257 supplies a compact standard-voltage servo output for tail or small control surfaces.

Designed for modelling, the gyro houses its sensor and control circuits in a conductive resin case to improve EMC resistance and supports remote gain adjustment and mode switching from a compatible transmitter. DS mode compatibility is available for Futaba digital servos to preserve fast response when a digital unit is used.

On installation, the gyro's small footprint and preset mounting pads assist placement in common electric helicopter fuselages, and remote gain tuning allows adjustments without removing the model from the flying field. The S9257 uses standard wiring and voltage ranges expected in model setups for straightforward integration with Futaba receivers.

For model flyers seeking a compact heading-hold gyro with remote tuning plus a dependable standard servo for tail work, the Futaba GY401+S9257 is a compact, installation-friendly option; configure gain and wiring for your specific airframe and transmitter.