KingMax Hobby KM3811D

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Technical Specifications

Last Updated: 2026-07-10

Identity
Brand
Category	Hobby
Performance
Torque	6.0V 152.79 oz-in 5.0V 138.90 oz-in Top 10%
Speed	6.0V 0.14 sec/60° 5.0V 0.16 sec/60° Below Average
Physical
Weight	1.34 ozBelow Average
Dimensions	L 1.57 in W 0.79 in H 1.42 in
Case Material	Plastic
Drivetrain
Motor Type	Brushed
Gears	Plastic
Gear Spline/Teeth	25 T
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Neutral Position	1520 µs
Dead Band	2 µs
Refresh Rate	330 Hz
Electrical & Environment
Operating Voltage	5–6 V
Water Rating	Waterproof
Connectivity
Connector	JR (Universal)
Wire Length	300 mm
Origin
Country of Origin	China

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Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.

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*Based on known specs.

Class Comparison

Torque	Top 10% Stronger than 91% of 262 Digital Mini servos at 5.0V
Speed	Below Average Faster than 14% of 263 Digital Mini servos at 5.0V
Weight	Below Average Lighter than 12% of 466 Digital Mini servos

Performance Analysis

Shaft Power	1.61–2.02 W
Power Density	1.146 W/in³ More power-dense than 26% of 440 Digital Mini servos
Torque Density	3.6553 oz-in/g Stronger than 81% of 258 Digital Mini servos
Torque-to-Volume Ratio	78.87 oz-in/in³ Denser torque than 49% of 262 Digital Mini servos
Speed-to-Weight	0.16447 (1/sec·g) Faster than 6% of 259 Digital Mini servos
Speed-Torque Trade-off	22.22 Better balanced than 95% of 261 Digital Mini servos
Torque Gain per Volt	10.00%/V More voltage-responsive (torque) than 9% of 232 Digital Mini servos
Speed Gain per Volt	14.29%/V More voltage-responsive (speed) than 37% of 235 Digital Mini servos
Voltage Range Width	1.0 V Wider voltage range than 1% of 351 Digital Mini servos