FUTS9253   Futaba   S9253 Servo Digital Heli Rudder

TECH NOTES
     This is the Futaba S9253 Digital High Speed Rudder F3C Servo for Gyro
          with High-Current Wire Lead and "J" Connector Pre-Installed.

FEATURES: Digitally enhanced microprocessors cut about 1/2 of the response
            time from transmitter input to servo reaction.
          Dual ball bearings on the output shaft
          Plastic/nylon gear train
          High speed
          High current, high capacity wire lead with low resistance
          Gold plated connectors
          Case is made of black plastic
          Dust and water resistant (Not waterproof)
          Designed exclusively as a tail rotor servo for F3C, 30, 46 and 60
            sized helicopters, particularly with SMM gyros such as GY401,
            GY502.  (Will Not work with the GY601 gyro.)
          One year warranty

INCLUDES: One Digital All Purpose Servo w/Small Round Horn
          Four Rectangular Grommets
          Four Brass Bushings
          Four Mounting Screws
          One Large Round Horn
          One Six Arm Horn

SPECS:    Speed:   .08 sec/60 degrees (based on 4.8 volt gyro rating)
          Torque:  27.8 oz/in (2.0 kg-cm) (based on 4.8 volt gyro rating)
          Weight:     1.75 oz (50 g)
          Power Supply: 4.8 volt (Futaba does not recommend using 6 volts)
          Length:        1.5" (40mm)
          Width:        0.75" (20mm)
          Height:        1.4" (36.6mm)

COMMENTS: S9253 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 S9253 Servo is specially designed for high-
            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 w/gyro.  Dry cells are rated at
              1.5 volts each making the overall voltage 6.0 volts which will
              damage the **gyro**. Servo is fine on 6.0V.
            (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.
          When Used With GY501 Gyro:
            Switch the GY501 servo frame rate function (Frm) from "NOR" to
            "High" to display the performance of the gyro to the fullest.
            Setting Method:
            (1) Press the GY501 FUNC+ or - key to call the Servo Frame Rate
              Setup Screen.
            (2) Press the DATA+ or - key to display "High".
          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.
          This servo is meant for gyro use.                         

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