Futaba S9157 Digital Hi-Torque Servo  [S9157]

This is the Futaba S9157 High Torque Servo.

FEATURES:
Perfect for large competition airplanes
Coreless motor
Dual ball bearings and metal gears
Metal center instance assists dissipate heat for cooler procedure
12 months limited warranty

INCLUDES:
Futaba S9157 High Torque Servo with 0.83" (21mm) diameter round horn, 1.8" (45mm) diameter circular horn, 1.2" (31.5mm) 6 point horn, 1.5" (38.5mm) 4 point horn and mounting hardware

NEEDS:
Installing in model, connecting linkage and connecting to receiver

SPECS:
Torque: 425oz-in (30.6kg/cm) @ 6V
Speed: 0.14 @ 6V
Size: 1.6 x 0.8 x 1.5" (41 x 21 x 37mm)
Weight 2.5oz (71g)
Horn Screw Size: 3x8mm

COMMENTS:
Usage with NiCD batteries just
An email on Coreless motors: old-fashioned servo motors have actually a metal core armature wrapped with cable that spins in the magnets. In a Coreless design, the armature uses a slim wire mesh that types a glass that spins across the outside of the magnet eliminating the heavy metal core. This design leads to smoother operation and quicker reaction time.