Hitec D-980Tw 32-Bit, Ultra Torque, Titanium Gear Servo .14Sec/486Oz @

    This is the Hitec D-Series Dynamo D-980TW Wide Voltage
Beast Torque Titanium Equipment Servo.

FEATURES:
For 20-120 class aircraft, all EP 600-700 class helicopters, all
    GP 30-90 class helicopters, 1-10-1/4 scale lorry steering and
    throttle, and nitro and fuel powered boats
Durable titanium alloy metal equipments with dual ball bearings
Ultra difficult equipment shaft with 3 axial metal bushings
32-bit MCU and 12-bit ADC for unprecedented programmability and
    versatility
*Programmable digital amplifier with MOSFET drive
Water and dust resistant (splash proof)
Metal center heat sink

INCLUDES:
D-980TW Wide Voltage Beast Torque Servo
0.98" (25mm) Single Arm
1.2" (31.5mm) Single Arm
1.7" (44mm) Double Arm
2.2" (55mm) Single Arm
2.8" (72mm) Double Arm
4.2" (108mm) Double Arm
1.5" (38mm) 4-Point Horn
1.4" (36mm) Round Horn
4 each Grommets, Eylets and Mounting Screws
Metal Adapter Ring, additional Horn Screw

SPECS:
4.8V 6.0V 7.4V
Speed: 0.28 0.21 0.14 sec/60°
Torque: 361 500 611 oz-in
26 36 44 kg-cm
Motor Type: Coreless
Measurements: 1.72 x 0.88 x 1.57" (43.7 x 22.4 x 39.9mm)
Weight: 2.76 oz (78.2g)
Number of Teeth on Spline: 25
Diameter of Horn Screw: 3mm

COMMENTS:
*Programmable functions need Hitec Servo Programmer sold separately
HFP-30, DPC-11, HRCP4429

A note on Coreless motors: traditional servo motors have a steel
core armature covered 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 beyond the magnet getting rid of the
heavy steel core. This design results in smoother operation and
much faster action time.