S9251 Futaba – Digital Servo (57g/0.07sec/3.7kg)

FEATURES:

• This servo is designed especially for the GY601 and the GY611 gyros; it
  will not work with any other application.
• The manufacturer claims that the S9251 is the only servo that can be used
  with the GY601 gyro because no other servo has a sufficient frame refresh
  rate.
• The GY601 can only be used at 4.8 volts; higher voltages may damage the
  gyro.
• Manufacturer Warning: “When mounting this servo in the fuselage, ensure
  that the servo case and the metal parts of the helicopter frame do not touch,
  to prevent radio noise.”
• Manufacturer Warning: “Immediately after flight, do not touch the S9251
  case. The heat sink section of the case may be extremely hot, and may cause
  burns.”

SPECS:

• Modulation: Digital
• Torque: 4.8V: 51.0 oz-in (3.67 kg-cm)
• Speed: 4.8V: 0.07 sec/60°
• Weight: 2.01 oz (57.0 g)
• Dimensions: Length:1.57 in (39.9 mm)
• Width:0.79 in (20.1 mm)
• Height:1.46 in (37.1 mm)
• Motor Type: Coreless
• Gear Type: Metal
• Rotation/Support: Dual Bearings