Futaba GY401+S9257 Compact AVCS Gyro and S9257 Digital Servo Kit  [GY401+S9257]

Accurate tail control using Futaba GY401+S9257

The Futaba GY401+S9257 package gives RC helicopter pilots a dependable setup for refined control. The kit bundles the GY401 AVCS gyro with SMM technology together with the responsive S9257 digital servo to improve stability and reduce trim drift.

GY401 AVCS gyro capabilities

The GY401 AVCS gyro is built to be small and light for easy installation in common model helicopters. Its Angular Vector Control System (AVCS) counters unwanted rudder trim shifts caused by wind or rotor loads, keeping heading corrections smooth. The SMM enhancement reduces rudder trim variation so the tail holds steady through long flights.

S9257 digital servo benefits

The S9257 digital servo complements the gyro by providing quick, accurate inputs. With 23oz-in torque and a 0.08 sec/60 deg speed at 4.8V to 6.0V, the servo is designed for fast response to stick commands while retaining fine position control for precise maneuvers.

For hobby pilots who want predictable tail handling and minimal trim work, the Futaba GY401+S9257 kit delivers consistent, easy-to-tune performance for casual flying and precision practice.