FUTS9251   Futaba   S9251 Servo Digital For GY601 Only

TECH NOTES
           This is the S9251 Digital High Speed Rudder F3C Servo
                  designed especially for the GY601 Gyro.
           This servo will NOT work with any other application
                            4.8 volts ONLY

FEATURES: Special servo for the GY601. Compatible with Super Narrow Pulse of
            (760µs) drive.
          Digitally enhanced microprocessors cut about 1/2 of the response
            time from transmitter input to servo reaction.
          Middle-case section is black alumite with silver heat sink cut-outs;
            effectively dissipates the motor heat.
          Digital operation allows this servo to reach full power immediately
            and maintain torque longer.
          High-capacity, high-current wire with low resistance.
          Gold plated connectors
          High speed operation for immediate response.
          Metal gears.
          Coreless motor.
          Water and dust resistant.
          Dual ball bearings on the output shaft.
          Delivers high speed operation for rudders on FAI competition
            helicopters and precision fixed-wing F3C pattern aircraft.
          One year warranty.

INCLUDES: One S9251 Digital High Speed Rudder F3C Servo with Futaba J Connector
            and small round horn
          Four Rectangular Grommets
          Four Brass Bushings
          Four 2 x 12mm Mounting Screws
          One Large Round Horn
          One Six Arm Horn
          One Four Arm Horn

SPECS:    Length: 1.5" (40mm)
          Width:  .75" (20mm)
          Height: 1.4" (36.6mm)
          Weight: 1.75 oz (57g)
          Speed:  0.07 sec/60° (based on 4.8 volt gyro rating)
          Torque: 51.4 oz/in   (based on 4.8 volt gyro rating)

COMMENTS: The GY601 can only be used at 4.8V, higher voltage may damage the
            gyro.
          The S9251 is the ONLY servo that can be used with the GY601 Gyro. No
            other servo has the frame refresh rate to stand up to this gyro.
          Immediately after flight, DO NOT touch the S9251 case. The heat sink
            section of the case is extremely hot, and may cause burns.
          When mounting in the fuselage, install the S9251 so that the servo
            case and the metal parts of the helicopter frame do not touch. The
            aluminum middle case will generate a large amount of noise if
            touched, and could make it impossible for the receiver to receive.
          S9251 Digital Servo Precautions,
            -It is best to avoid long leads and Y-harnesses especially with
             standard grade wires. If problems are encountered, consider using
             heavy duty wire such as Futaba's Heavy Duty Series or Hobbico's
             Pro Series ,minimizing lead lengths, and/or removing Y-harnesses.
           -Current Drain: Futaba S9251 Servo is specially designed for higher
            torque and high-speed, therefore very high current drain is
            normal at startup. For ultimate performance when using this servo,
            please review the following points.
            (1) Always use a 4.8 volt NiCd battery. Dry cells are rated at
              1.5 volts each making the overall voltage 6.0 volts which will
              damage the gyro.
            (2) When using systems with the battery fail safe function it has
              a higher cut-off voltage setting which will cause shorter
              operation time.
            (3) When installing the servo please check pushrod linkage to make
              sure there is no binding in order to prevent excessive power
              consumption and decrease the life of the motor and battery.
          This digital servo CANNOT be used with the following transmitters:
            (Servo Neutral Signal: 1310us)
            Conquest AM, FG Series (T4FG, T5FGK, T6FG, T6FGK. T7FGK), New
            Terratop, T3EGX, T3PGE, T2NL, T2LGX, T2FR, T2PK Series

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