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Home > Rc Helicopters > Gyros > Futaba > 249

Futaba 249 Gyro GY401 + S9257 Servo For RC Model Heli

Futaba 249 Gyro GY401 + S9257 Servo For RC Model HeliManufacturerFutaba
Product CodeFutaba 249

Futaba 249 Gyro GY401 + S9257 Servo For RC Model Heli

CategoryHome > Rc Helicopters > Gyros
Date Added11/12/2010
AvailabilityNot available
Sales Price (incl. VAT)€ 190.00

Futaba 249 Gyro GY401 + S9257 Servo For RC Model Heli

This is the GY401 Gyro with SMM Technology from Futaba. This is a High Performance, Compact and Lightweight (AVCS) Angular Vector Control System gyro developed for model helicopters. Because the sensor and control circuit are integrated, it is simple to install.

This is the Futaba S9257 High Speed Digital Servo for Helicopter Gyro Operation.


GY401 Gyro - AVCS System: Since the rudder trim changes (caused by wind and other meteorological changes); the front, rear, and other heli attitudes change and are automatically cancelled; tail (rudder) operation is easy, making it perfect for 3D flight. (also known as Heading Hold Gyro) SMM Gyro Sensor: Use of this newly developed technology virtually eliminates rudder trim changes during flight (see COMMENTS). Digital Servo Compatible (DS Mode): DS mode makes it compatible with Futaba digital servos. This maximizes the high-speed response performance of the Digital Servo. Remote Gain Function and Mode Switching Function Remote: Gain function allows sensitivity switching from the transmitter and mode switching function allows AVCS/normal gyro mode switching. Integrated, compact and lightweight design made possible by high density mounting technology. Conductive Resin Case: This case improves EMC (Electrostatic and electromagnetic interference) resistance.

S9257 - For use with the Futaba GY401 (FUTM0807, FUTM0808) and the GY502
gyros.Equipped with two ball bearings


One GY401 gyro One mini plastic adjustment screwdriver Three mounting pads One instruction sheet

One Futaba S9257 High Speed Digital Servo with .83" (21mm) diameter
round horn, 1.5" (39mm) diameter four-point horn, 1.2" (32mm)
diameter six-point horn, mounting hardware, digital servo and precaution sheet


GY401 Gyro- Length: 27mm Width: 27mm Height: 20mm Weight: 27g Voltage- use only with a 4.8V battery. (if you use it with a higher voltage battery it needs to be regulated to 6V)

S9257 - Length: 1.40" (35.5mm)
Width: .59" (15mm)
Height: 1.13" (28.6mm)
Weight: .9oz (26g)
Torque: 27.76 oz-in (2 kg-cm) at 4.8V
Operating Speed: .08 sec/60° at 4.8V
Cord Length: 7.9" (200mm)


GY401 Gyro - Can be used in helicopters and airplanes (Due to 0-100% Gain Adjust). The new SMM (Silicon Micro Machine) technology is the integration of mechanical elements, sensors, actuators and electronics all brought together on a common substrate chip. This hobby industry first, results in a gyro sensor with an unprecedented level of functionality, reliability, and sophistication. This will not work with the JR Digital Servos. These have a different pulse.

S9257 - For use only with FM, PCM and HRS systems. Do not use with AM systems

Futaba 249 Gyro GY401 + S9257 Servo For RC Model Heli
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