Hitec HS-8381TH

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-10

Identity
Brand
Product Number	38381
Category	Hobby
Discontinued	Yes
Performance
Torque	7.4V 486.00 oz-in 6.0V 403.00 oz-in Above Average
Speed	7.4V 0.14 sec/60° 6.0V 0.17 sec/60° Below Average
Physical
Weight	2.75 ozBelow Average
Dimensions	L 1.57 in W 0.79 in H 1.50 in
Drivetrain
Motor Type	Coreless
Gears	Titanium
Gear Spline/Teeth	25 T
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Neutral Position	1500 µs
Control System	PWM
Programmable	No
Electrical & Environment
Operating Voltage	6–7.4 V
Connectivity
Connector	JR (Universal)

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Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Above Average Stronger than 84% of 1043 Digital Standard servos at 6.0V
Speed	Below Average Faster than 26% of 1041 Digital Standard servos at 6.0V
Weight	Below Average Lighter than 16% of 1902 Digital Standard servos

Performance Analysis

Shaft Power	4.38–6.42 W
Power Density	3.450 W/in³ More power-dense than 65% of 1759 Digital Standard servos
Torque Density	5.1667 oz-in/g Stronger than 79% of 1036 Digital Standard servos
Torque-to-Volume Ratio	216.61 oz-in/in³ Denser torque than 86% of 1042 Digital Standard servos
Speed-to-Weight	0.07541 (1/sec·g) Faster than 9% of 1033 Digital Standard servos
Speed-Torque Trade-off	68.52 Better balanced than 88% of 1031 Digital Standard servos
Torque Gain per Volt	14.71%/V More voltage-responsive (torque) than 42% of 850 Digital Standard servos
Speed Gain per Volt	15.32%/V More voltage-responsive (speed) than 49% of 871 Digital Standard servos
Voltage Range Width	1.4 V Wider voltage range than 33% of 1539 Digital Standard servos