Futaba S3171SB

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-24

Identity
Brand
Product Number	FUTM0461
Category	Hobby
Discontinued	Yes
Performance
Torque	6.0V 65.14 oz-in 4.8V 51.00 oz-in Top 10%
Speed	6.0V 0.20 sec/60° 4.8V 0.24 sec/60° Bottom 10%
Physical
Weight	0.71 ozBottom 10%
Dimensions	L 1.181 in W 0.425 in H 1.142 in
Drivetrain
Motor Type	3-pole
Gears	Metal
Gear Spline/Teeth	25 T
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Rotational Range	180°
Pulse Width	920-2120 µs
Neutral Position	1520 µs
Control System	SBUS
Programmable	Yes
Electrical & Environment
Operating Voltage	4.8–6 V
Temperature	-15–55 °C
Connectivity
Connector	Futaba J

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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.

Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Top 10% Stronger than 95% of 21 Digital Nano servos at 4.8V
Speed	Bottom 10% Faster than 5% of 21 Digital Nano servos at 4.8V
Weight	Bottom 10% Lighter than 5% of 40 Digital Nano servos

Performance Analysis

Shaft Power	0.39–0.60 W
Power Density	1.051 W/in³ More power-dense than 33% of 34 Digital Nano servos
Torque Density	2.5500 oz-in/g Stronger than 60% of 21 Digital Nano servos
Torque-to-Volume Ratio	88.97 oz-in/in³ Denser torque than 75% of 21 Digital Nano servos
Speed-to-Weight	0.20833 (1/sec·g) Faster than 5% of 21 Digital Nano servos
Speed-Torque Trade-off	12.24 2nd-highest speed-torque trade-off of 21 Digital Nano servos
Torque Gain per Volt	23.10%/V More voltage-responsive (torque) than 92% of 74 Futaba servos
Speed Gain per Volt	16.67%/V More voltage-responsive (speed) than 34% of 75 Futaba servos
Voltage Range Width	1.2 V Wider voltage range than 34% of 30 Digital Nano servos