Detailed Specifications

Control System: +Pulse Width Control 1500usec Neutral
Required Pulse: 4.8-7.4 Volt Peak to Peak Square Wave
Operating Voltage Range: 4.8-7.4 Volts
Operating Temperature Range: -20 to +60 Degree C (-68F to +140F)
Operating Speed (6.0V): 0.21 sec/60° at no load
Operating Speed (7.4V): 0.17 sec/60° at no load
Stall Torque (6.0V): 500oz/in. (36kg.cm)
Stall Torque (7.4V): 611oz/in. (44kg.cm)
Operating Angle:
45 Deg. one side pulse traveling 400usec
360 Modifiable: No
Direction:
Clockwise/Pulse Traveling 1500 to 1900usec
Idle Current Drain (6.0V): N/A (Testing Now)
Current Drain (4.8V):
N/A (Testing Now)
Current Drain (6.0V): N/A (Testing Now)
Dead Band Width: 1usec
Motor Type: Coreless Carbon Brush
Potentiometer Drive: Magnetic Encoder
Bearing Type: Dual Ball Bearing MR106
Gear Type: Titanium Gears
Connector Wire Length: 11.81" (300mm)

Dimensions:
1.72" x 0.88"x 1.57" (43.8 x 22.4 x 40mm)
Weight:
2.76oz (78.2g)

Price:

$199.99 $175.99

Part:

37990S

Status:

 In-Stock

Rotation:

Direction:

Qty:

 

 611 oz-in.

 

 0.21 sec/60°

*Digital servos do not need to be programmed to operate. They work great right out of the box and purchasing a programmer is not necessary.

HS-M7990TH Hardware Set

Programable Features:
- Dead Band Width
- Direction of Rotation
- Speed of Rotation (slower)
- End Points (up to 180 degrees)
- Neutral Points
- Fail Safe On/Off
- Fail Safe Points
- Resolution (default is set at high)
- Overload Protection (default is off)

Digital Servo FAQ
HS-7950TH gears
HS-7950TH circuit board

New G2.5 circuit board

Titanium Gears

Titanium Output Spline

Gold-Plated Connector

HS-7980TH Hardware
HS-7980TH Servo 2

The "Monster Torque" HS-M7990TH is finally here!  Features our newest innovation, a magnetic encoder in place of the conventional potentiometer. This provides outstanding linearity, offers semi-permanent lifespan and much less electric noise. Combine this with the high resolution "G2.5" 12 bit generation programmable digital circuit and our indestructible Titanium gears and you have the most advanced servo on the market today.
HS-M7990TH has the performance and durability you've come to expect from a Hitec servo. The HS-M7990TH has been designed for the most demanding hobby applications including the largest aircraft and monster trucks. Featuring a titanic 611oz./in. of torque at 7.4 volts, all this power is harnessed by incorporating the industries first Titanium gears for incredible wear resistance and two strong hardened steel gear pins and axial brass bushing mounted in the servo case. We offer the HS-M7990TH servo in 90° stock rotation, 180° modified rotation, and reverse rotation. Other features in the HS-M7990TH 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. Will operate on a two cell LiPo Pack. 

HS-7980TH Servo comparison

Note that the HS-M7990TH is about 10% larger than a standard servo such as the HS-7950TH.

HS-M7990TH box
HS-M7990TH with long arm
HS-M7990TH case

This servo can be configured to operate 180° by using any of the following servo programmers:
Hitec HFP-25, HPP-21, HPP-21+

Servo Programmability
HS-7990TH 1
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C1 Hitec Spline2

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General Servo Information

More Info

What is a servo

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How servos work

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what servo to use

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Servo Power and Speed

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Rotation Direction

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Connector Types

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180 rotation

More Info

Continuous Rotation

Uses C1 Standard Spline

Conversion Calculators - Click Here

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HS-M7990TH Servo
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