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HS-7985MG Servo

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The new HS-7985MG High Torque Digital Servo has the added benefit of Hitec's new G2 second generation programmable digital circuit. This circuit has twice the resolution of our original circuit while adding programmable overload protection. The technology doesn’t stop at the circuit board, with a high performance coreless motor, dual ball bearing supported output shaft, bushing supported gear shafts and Hitec's Heavy Duty Metal gear train the HS-7985MG was designed to withstand the stress of larger high performance aircraft and on/off road vehicles.

Programable Features:
- Dead Band Width
- Direction of Rotation
- Speed of Rotation (slower)
- End Points
- Neutral Points
- Fail Safe On/Off
- Fail Safe Points
- Resolution (default is set at high)
- Overload Protection (default is off)

Dimensions 1.57" x 0.78"x 1.45" (40 x 20 x 37mm)
Product Weight 2.18oz (62g)
Output Shaft Style 24 tooth (C1) spline
Voltage Range 4.8V - 6.0V
No-Load Speed (4.8V) 0.16sec/60°
No-Load Speed (6.0V) 0.13sec/60°
Stall Torque (4.8V) 144oz/in. (
Stall Torque (6.0V) 172oz/in. (
Max PWM Signal Range (Standard) 750-2250μsec
Travel per µs (out of box) .075°/μsec
Travel per µs (reprogrammed normal res) .130°/μsec
Travel per µs (reprogrammed high res) .075°/μsec
Max Travel (out of box) 113°
Max Travel (reprogrammed normal res) 195°
Max Travel (reprogrammed high res) 112°
Pulse Amplitude 3-5V
Operating Temperature -20°C to +60°C
Current Drain - idle (4.8V) 3mA
Current Drain - idle (6.0V) 3mA
Current Drain - no-load (4.8V) 200mA
Current Drain - no-load (6V) 240mA
Current Drain - stall (4.8V) 2A
Current Drain - stall (6V) 3A
Continuous Rotation Modifiable Yes
Direction w/ Increasing PWM Signal Clockwise
Deadband Width 2µs
Motor Type Coreless Carbon Brush
Potentiometer Drive 6 Slider Indirect Drive
Internal Feedback Style 5KΩ Potentiometer
Output Shaft Support Dual Ball Bearing MR106
Gear Type Straight Cut Spur
Gear Material 3 Metal, 1 Metal Karbonite Gear
Wire Length 7" (178mm)
Wire Gauge 22AWG

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