SpringRC SM-S4309M

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-10

Identity
Brand
Category	Hobby
Performance
Torque	6.0V 134.90 oz-in 4.8V 118.40 oz-in Above Average
Speed	6.0V 0.16 sec/60° 4.8V 0.18 sec/60° Average
Physical
Weight	2.01 ozBelow Average
Dimensions	L 1.654 in W 0.807 in H 1.555 in
Drivetrain
Motor Type	Brushed
Gears	Copper
Rotation Mode	Positional
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Analog
Rotational Range	180°
Neutral Position	1500 µs
Control System	PWM
Electrical & Environment
Operating Voltage	4.8–6 V
Connectivity
Connector	JR (Universal)
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.

Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Above Average Stronger than 69% of 192 Analog Standard servos at 4.8V
Speed	Average Faster than 55% of 190 Analog Standard servos at 4.8V
Weight	Below Average Lighter than 18% of 448 Analog Standard servos

Performance Analysis

Shaft Power	1.22–1.56 W
Power Density	0.751 W/in³ More power-dense than 66% of 437 Analog Standard servos
Torque Density	2.0772 oz-in/g Stronger than 62% of 192 Analog Standard servos
Torque-to-Volume Ratio	57.04 oz-in/in³ Denser torque than 64% of 192 Analog Standard servos
Speed-to-Weight	0.09747 (1/sec·g) Faster than 21% of 190 Analog Standard servos
Speed-Torque Trade-off	21.31 Better balanced than 71% of 190 Analog Standard servos
Torque Gain per Volt	11.61%/V More voltage-responsive (torque) than 35% of 145 Analog Standard servos
Speed Gain per Volt	10.43%/V More voltage-responsive (speed) than 25% of 147 Analog Standard servos
Voltage Range Width	1.2 V Wider voltage range than 36% of 229 Analog Standard servos