HiTec 7985mg

HiTec 7985mg

HiTec 7985mg
HiTec 7985mg
HiTec 7985mg
Market Price: $117.95
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Quantity (9)

Availability 9 in stock
Weight 0.31 lbs

The HS-7985MG is a very high quality servo and perfect for 50cc (even for the rudder). Great in a 30cc but maybe overkill. It is fully programmable using Hi Tec's programmer. The combination of torque, speed, price and extreme holding power make it a favorite among pilots. new premium high speed HS-7985MG Digital Servo has the added benefit of our new G2 second generation programmable digital circuit. This circuit has twice the resolution of our original circuit while adding programmable overload protection. The technology does not stop at the circuit board, with high performance coreless motors, dual ball bearings, bushing supported gear shafts, dual ball bearing output shaft and our Heavy Duty Metal gear train the HS-7985MG will give you everything you need no matter what the demand.


  • Torque:
    • 144 oz/in at 4.8V (10.4 kg/cm)
    • 172 oz/in at 6V (12.4 kg/cm)
  • Speed:
    • .16 sec at 4.8V
    • .13 sec at 6V
  • Voltage: 4.8V - 6V
  • Weight: 2.18oz (62g)
  • Size: 1.57" x 0.78"x 1.45 in (40 x 20 x 37 mm)
  • Control System: +Pulse Width Control 1500usec Neutral
  • Required Pulse: 4.8-6.0 Volt Peak to Peak Square Wave
  • Operating Voltage Range: 4.8-6.0 Volts
  • Operating Temperature Range: -20° to +60° C (-4°F to +140°F)
  • Stall Torque (4.8V): 144oz/in. (10.4 kg/cm)
  • Stall Torque (6.0V): oz/in. (12.4 kg/cm)
  • Operating Angle: 45 Deg. one side pulse traveling 400usec
  • 360 Modifiable: Yes
  • Direction: Clockwise/Pulse Traveling 1500 to 1900usec
  • Idle Current Drain (4.8V): 3mA at stop
  • Idle Current Drain (6.0V): 3mA at stop
  • Current Drain (4.8V): 200mA/idle and 2.0 amps at lock/stall
  • Current Drain (6.0V): 240mA/idle and 3.0 amps at lock/stall
  • Dead Band Width: 2usec
  • Motor Type: Coreless Carbon Brush
  • Potentiometer Drive: 6 Slider Indirect Drive
  • Bearing Type: Dual Ball Bearing MR106
  • Gear Type: 3 Metal, 1 Metal Karbonite Gear
  • Connector Wire Length: 7" (178mm)
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MPI Aluminum Servo Arms


MPI servo arms are made with heavy duty anodized aluminum offset servo arms designed for Hitec, Futaba, XQ Power, Power HD Servos. These MPI servo arms are drilled and tapped for 4-40 with a starter hole for another hole closer in if necessary. The clamping arm on these MPI arms ensures a safe and secure installation, minimizing any risk of slop or the arms coming loose. 

We recommend the following sizes of MPI arms for the planes below:

30cc planes typically use 1.25" for ailerons and elevators, and 3" for rudder.

50cc planes typically use 1.25-1.5" for ailerons and elevators, and 3.5" - 4" for rudder.

100cc planes typically use 1.5" for ailerons and elevators, and 4" for rudder.

1.25", 1.5", 3", 4" Sizes
Available for HiTEC, XQ Power, PowerHD, Futaba Servos

MPI Arms feature:
Bracing for Extra Strength
Lightweight and Strong
Extra Security Screw to Keep Arms on
Pre Dented to Allow for Optional Holes

Futuba style arms fit: Power HD, XQ-Power, and Futaba
Hitec fit: Hitec

**Now introducing new size! 2-inch lengths for HiTec and Futaba!

MPI Servo Arm Pricing:
  • 1.25" arm $8.90
  • 1.5" arm $10.25
  • 2" arm $11
  • 3" rudder arm $15.25
  • 4" rudder arm $16.95

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MKS X8/X6 2" Carbon Arm

MKS X8/X6 2" Carbon Arm


Custom 2" Carbon Servo Arm 
Will work on both X8 and X6 MKS Hub sets