Futaba S9157 Digital High-Torque Servo
This is the Futaba S9157 High Torque Servo
Features:
Ideal for large competition airplanes
Coreless motor
Dual ball bearings and metal gears
Metal middle case helps dissipate heat for cooler operation
Specification:
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Control System: +Pulse Width Control 1520usec Neutral
Required Pulse: 3-5 Volt Peak to Peak Square Wave
Operating Voltage: 4.8-6.0 Volts
Operating Temperature Range: -20 to +60 Degree C
Operating Speed (6.0V): 0.14sec/60 degrees at no load
Stall Torque (6.0V): 425 oz/in.
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: Dual Ball Bearing
Gear Type: All Metal Gears
Connector Wire Length: 12"
Dimensions: 1.59" x 0.83"x 1.47" (40.5 x 21 x 37.4mm)
Weight: 2.50oz. (71g)
Horn Screw Size: 3x8mm
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Package Included:
Futaba S9157 High Torque Servo with 0.83" (21mm) diameter round horn,
1.8" (45mm) diameter round horn,
1.2" (31.5mm) 6 point horn,
1.5" (38.5mm) 4 point horn and mounting hardware
Notes:
Use with NiCD batteries only
A note on Coreless motors: Conventional servo motors have a steel
core armature wrapped with wire that spins inside the magnets. In
a Coreless design, the armature uses a thin wire mesh that forms a
cup that spins around the outside of the magnet eliminating the
heavy steel core. This design results in smoother operation and
faster response time.
Stock/Manufacturer #FUTM0217
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Helicopters 
