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SpringRC SM-S4209M
Standard

SpringRC SM-S4209M

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-07-10
Identity
Brand SpringRC
Product Number (add)
Category Hobby
Performance
Torque
6.0V 133.60 oz-in
4.8V 121.00 oz-in
Speed
6.0V 0.11 sec/60°
4.8V 0.13 sec/60°
Running Current (add)
Stall Current (add)
Physical
Weight 2.01 oz
Dimensions L 1.65 in
W 0.81 in
H 1.56 in
Case Material (add)
Drivetrain
Motor Type Coreless
Motor Drive (add)
Gears Metal
Gear Spline/Teeth (add)
Shaft Size (add)
Rotation Mode (add)
Rotation/Support Dual Bearings
Backlash (add)
Control & Signal
Modulation Digital
Direction (add)
Rotational Range 180°
Mechanical Limit (add)
Pulse Cycle (add)
Pulse Width (add)
Neutral Position 1500 µs
Dead Band (add)
Refresh Rate (add)
Angle Sensor (add)
Control System PWM
Programmable (add)
Signal Voltage (add)
Electrical & Environment
Operating Voltage 4.8–6 V
Power Source (add)
Regulator Type (add)
Temperature (add)
Water Rating (add)
Certification (add)
Idle Current (add)
Connectivity
Connector JR (Universal)
Wire Length (add)
Origin
Country of Origin China

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.

Performance Analysis

Shaft Power 1.72–2.25 W
Torque Density2.1228 oz-in/g
Stronger than 28% of the 831 Digital Standard servos in the database
Torque-to-Volume Ratio58.30 oz-in/in³
Denser torque than 22% of the 842 Digital Standard servos in the database
Power Density1.082 W/in³
More power-dense than 21% of the 1643 Digital Standard servos in the database
Speed-to-Weight0.13495 (1/sec·g)
Faster than 60% of the 820 Digital Standard servos in the database
Speed-Torque Trade-off15.73
Better balanced than 30% of the 825 Digital Standard servos in the database
Torque Gain per Volt8.68%/V
More voltage-responsive (torque) than 14% of the 672 Digital Standard servos in the database
Speed Gain per Volt15.17%/V
More voltage-responsive (speed) than 49% of the 686 Digital Standard servos in the database
Voltage Range Width1.2 V
Wider voltage range than 19% of the 1268 Digital Standard servos in the database

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Reviews (2)

  • finflyer

    April 17, 2012

    Application(s): .50 size nitro helicopter ccpm servos!

    Comments: One of three servos does not work at all!!
    Cheap but crap servo!

  • george

    February 20, 2011

    Application(s): intended to use on Top Flite P-51 Mustang rudder, elevator,ailerons, and flaps, but 4 of the servos did not work !!!

    Comments: I bought 6 of the servos from VOCANLO in Hong Cong for $102.00. 4 of the six dont work at all and the other two work part-time. The 4 that don't work,,the motor runs constantly when given a command, but the out-put shaft don't turn at all. Can you tell me the problem, and what is my recourse??????

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