JR DS3421

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*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-09-14

Identity
Brand
Product Number	JRPSDS3421
Category	Hobby
Discontinued	Yes
Performance
Torque	6.0V 75.00 oz-in 4.8V 65.00 oz-in Average
Speed	6.0V 0.15 sec/60° 4.8V 0.18 sec/60° Bottom 10%
Physical
Weight	1.04 ozBelow Average
Dimensions	L 1.30 in W 0.58 in H 1.02 in
Drivetrain
Motor Type	Coreless
Gears	Metal
Gear Spline/Teeth	23 T estimate
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Electrical & Environment
Operating Voltage	4.8–6 V
Connectivity
Connector	JR (Universal)

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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

*Spec is estimated from brand data.

Class Comparison

Torque	Average Stronger than 59% of 290 Digital Mini servos at 4.8V
Speed	Bottom 10% Faster than 8% of 293 Digital Mini servos at 4.8V
Weight	Below Average Lighter than 29% of 505 Digital Mini servos

Performance Analysis

Shaft Power	0.67–0.92 W
Power Density	1.202 W/in³ More power-dense than 29% of 482 Digital Mini servos
Torque Density	2.2034 oz-in/g Stronger than 45% of 286 Digital Mini servos
Torque-to-Volume Ratio	84.52 oz-in/in³ Denser torque than 54% of 288 Digital Mini servos
Speed-to-Weight	0.18832 (1/sec·g) Faster than 8% of 289 Digital Mini servos
Speed-Torque Trade-off	11.70 Better balanced than 77% of 288 Digital Mini servos
Torque Gain per Volt	12.82%/V More voltage-responsive (torque) than 23% of 257 Digital Mini servos
Speed Gain per Volt	16.68%/V More voltage-responsive (speed) than 54% of 262 Digital Mini servos
Voltage Range Width	1.2 V Wider voltage range than 32% of 405 Digital Mini servos