Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-10-22
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | JRPS3421SA |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
65.00 oz-in
4.68 kg-cm
0.5 N-m
4.8V
50.00 oz-in
3.60 kg-cm
0.4 N-m
Average
|
| Speed |
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
4.8V
0.18 sec/60°
333.3 deg/s
55.6 RPM
Bottom 10%
|
| Physical | |
| Weight | 0.92 oz26.1 gAverage |
| Dimensions |
L 1.30 in W 0.58 in H 1.02 in L 33.0 mm W 14.7 mm H 25.9 mm |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Hybrid |
| 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) |
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.
Class Comparison
| Torque | Average Stronger than 40% of 290 Digital Mini servos at 4.8V |
| Speed | Bottom 10% Faster than 8% of 293 Digital Mini servos at 4.8V |
| Weight | Average Lighter than 43% of 505 Digital Mini servos |
Performance Analysis
| Shaft Power | 0.51–0.80 W |
| Power Density | 1.042 W/in³ More power-dense than 20% of 482 Digital Mini servos |
| Torque Density | 1.9157 oz-in/g Stronger than 31% of 286 Digital Mini servos |
| Torque-to-Volume Ratio | 65.01 oz-in/in³ Denser torque than 39% of 288 Digital Mini servos |
| Speed-to-Weight | 0.21286 (1/sec·g) Faster than 15% of 289 Digital Mini servos |
| Speed-Torque Trade-off | 9.00 Better balanced than 63% of 288 Digital Mini servos |
| Torque Gain per Volt | 25.00%/V More voltage-responsive (torque) than 89% 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 31% of 405 Digital Mini servos |
Similar Active Servos
Reviews (1)
-
Vixen
October 10, 2014Application(s): Sailplane Flaps + Elevator (3.0M to 3.8M wingspan). Throttle and Choke on a 42% IMAC airframe with 150cc gas motor
Comments: These are solid servos and what other manufacturers should use as a benchmark for servos in this class for both reliability and quiet performance. I use these on the flap and elevator surfaces on my 3.0M to 3.8M wingspan composite sailplanes as well as on my 42% IMAC planes for throttle and choke. Smooth consistent response from this servo.