Futaba GY401 Gyro + S9254 Digital Servo Combo
Ideal Rubber Servo for ESky 900, Belt-CP, T-Rex 500 and other 500 class helicopters!
This is the Futaba GY401 Gyro with an S9254 Digital Servo. 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.
Features:
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.
Included high-speed S9257 Digital Servo boasts 2.0kg-cm in torque and a speed of 0.08 sec/60° degree @ 4.8V
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. One year warranty
Package Includes:
1 x GY401 Digitial Gyro
1 x S9254 High Speed Digital Servo
One 0.81" (20.5mm) round servo horn, one 1.8" (45mm) round servo horn, one 1.25" (32mm) 6 point servo horn, one 1.5" (39mm) 4 point horn, mounting hardware
1 x Mini plastic adjustment screwdriver
3 x Mounting pads
1 x English Instruction sheet
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GY401 Specifications
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Length: 27mm
Width: 27mm
Height: 20mm
Weight: 27g (0.95oz)
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S9254 Digital Servo Detailed Specifications
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Control System: +Pulse Width Control 1520usec Neutral
Required Pulse: 3-5 Volt Peak to Peak Square Wave
Operating Voltage: 4.8 Volts Only
Operating Temperature Range: -20 to +60 Degree C
Operating Speed (4.8V): 0.08sec/60 degrees at no load
Stall Torque (4.8V): 28 oz/in. (2.0 kg.cm)
Operating Angle: 45 Deg. one side pulse traveling 400usec
360 Modifiable: Yes
Direction: Counter Clockwise/Pulse Traveling 1520-1900usec
Motor Type: Coreless Motor
Potentiometer Drive: Indirect Drive
Bearing Type: Ball Bearing
Gear Type: All Nylon Gears
Connector Wire Length: 7.9"
Dimensions: 1.60" x 0.8"x 1.4" (41 x 20 x 37mm)
Weight: 1.7oz. (49g)
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Comments: Can be used in helicopters and airplanes (Due to 0-100% Gain Adjust). The new SMM (Silicone 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 JR Digital servos. These have a different pulse. Voltage- use only with a 4.8V battery. (if you use it with a higher voltage battery it needs to be regulated to 6V)
Stock/Manufacturer # FUTM0808
RC711 recommends Futaba S9254 to use for rubber/tail servo on 500 class helicopters.
- Suitable to use on ESky 900, Belt-CP, SJM 400/500, T-Rex and other larger size 6 ch+ 500 class helicopters.
- Depends on the stock availability, we may ship GY401 and S9254 in individual packages.
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Helicopters 
