JR S8411-F3A

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*Based on known specs.

Technical Specifications

Last Updated: 2026-07-28

Identity
Brand
Category	Hobby
Performance
Torque	8.4V 272.70 oz-in 7.4V 240.30 oz-in 6.6V 214.30 oz-in
Speed	8.4V 0.13 sec/60° 7.4V 0.15 sec/60° 6.0V 0.19 sec/60° Below Average
Physical
Weight	1.86 ozAbove Average
Dimensions	L 1.358 in W 0.748 in H 1.535 in
Drivetrain
Gears	Hybrid
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Rotational Range	180°
Control System	PWM
Electrical & Environment
Operating Voltage	6–8.5 V
Connectivity
Connector	JR (Universal) estimate

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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

Speed	Below Average Faster than 13% of 844 Digital Standard servos at 6.0V
Weight	Above Average Lighter than 80% of 1822 Digital Standard servos

Performance Analysis

Shaft Power	2.96–3.88 W
Power Density	2.486 W/in³ More power-dense than 52% of 1648 Digital Standard servos
Torque Density	4.0587 oz-in/g
Torque-to-Volume Ratio	137.37 oz-in/in³
Speed-to-Weight	0.09968 (1/sec·g) Faster than 33% of 834 Digital Standard servos
Speed-Torque Trade-off	40.72
Voltage Range Width	2.5 V Wider voltage range than 63% of 1286 Digital Standard servos