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Hitec HS-7940TH High-Voltage 7.4V Ultra Speed Digital Servo

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This is the Hitec HS-7940TH High-Voltage 7.4V Ultra Speed Digital Servo. Hitec's fastest standard size servo, the "Ultra Speed" HS-7940TH is designed to operate on a two cell LiPo Pack. Featuring a high resolution "G2" second generation programmable digital circuit and indestructible Titanium gears, The HS-7940TH has the performance and durability you've come to expect from a Hitec servo. Other features in the HS-7040TH include a 7.4v optimized coreless motor, integrated heat sink case, and a top case with two hardened steel gear pins supported by axial brass bushing. 

The HS-7940TH has been designed for applications where speed and response is demanded. Perfect for High Performance Nitro and Electric Helicopters, Aircraft, Cars, and Trucks. Featuring a blistering transit time of .07sec but still maintaining a respectable 183 in/oz of torque at 6.0 volts. Increase the voltage with the use of a unregulated LiPo battery, and the specs increase to a crushing 222 in/oz of torque, with a lightning fast transit time of 0.06! All this speed and power is harnessed by incorporating the industries first Titanium gears for incredible wear resistance.

Programmable Features Include:

  • Dead Band Width
  • Direction of Rotation
  • Speed of Rotation (slower)
  • End Points
  • Neutral Points
  • Fail Safe On/Off
  • Fail Safe Point
  • Resolution* (default is high resolution)
  • Overload Protection* (default is off)

*These features are only programmable with the HFP-20, HPP-20 or HPP-21 programmers.


  • G2 Digital Circuit
  • Titanium Gear Train (MK first gear)
  • Ultra Performance Coreless Motor
  • Heatsink Case
  • (8) O-Rings for Water/Dust/Fuel protection
  • Dual Ball Bearing Supported Output Shaft
Size Category: Standard
Type: Digital
Application: High Performance Nitro and Electric Helicoptors, Aircraft, Cars, and Trucks
Torque: 150/182/222 oz./in. (4.8v/6v/7.4v)
Speed: 0.09/0.07/0.06 sec @ 60 deg. (4.8v/6v/7.4v)
Weight: 2.29oz (65 g)
Bushing Or Bearing: Bearing
Bearing: Dual
Motor Type: Coreless
Gear Type: Metal
Gear Material: Titanium Gear Train (Metal Karbonite first gear)

This product was added to our catalog on September 29, 2009.

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