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Technical Specifications
Last Updated: 2026-09-13Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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| Identity | |
| Brand |  |
| Product Number | JRPS8611A |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
320.00 oz-in
23.04 kg-cm
2.3 N-m
4.8V
260.00 oz-in
18.72 kg-cm
1.8 N-m
|
| 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
|
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 2.24 oz63.5 g |
| Dimensions |
L 1.58 in W 0.82 in H 1.56 in L 40.1 mm W 20.8 mm H 39.6 mm |
| Case Material | (add) |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | (add) |
| Gears | Metal |
| Gear Spline/Teeth | 23 T estimate |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | Dual Bearings |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | (add) |
| Neutral Position | (add) |
| Dead Band | (add) |
| Refresh Rate | (add) |
| Angle Sensor | (add) |
| Control System | (add) |
| 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 | Japan |
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 | 2.67–3.94 W |
| Torque Density | 4.0945 oz-in/g Stronger than 64% of the 832 Digital Standard servos in the database |
| Torque-to-Volume Ratio | 128.64 oz-in/in³ Denser torque than 57% of the 843 Digital Standard servos in the database |
| Power Density | 1.952 W/in³ More power-dense than 44% of the 1644 Digital Standard servos in the database |
| Speed-to-Weight | 0.08749 (1/sec·g) Faster than 19% of the 821 Digital Standard servos in the database |
| Speed-Torque Trade-off | 46.80 Better balanced than 74% of the 826 Digital Standard servos in the database |
| Torque Gain per Volt | 19.23%/V More voltage-responsive (torque) than 75% of the 673 Digital Standard servos in the database |
| Speed Gain per Volt | 16.68%/V More voltage-responsive (speed) than 61% of the 687 Digital Standard servos in the database |
| Voltage Range Width | 1.2 V Wider voltage range than 22% of the 1269 Digital Standard servos in the database |
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Reviews (3)
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Tyler
May 8, 2020Application(s): 50cc 3D Airlpnes
Comments: Wish these were still manufactured and sold today. Best all around servo for multi use in airplanes
Starman
May 11, 2019Application(s): Great Servos I have them in my T-Rex 600N Pro ,, Flawless on the Cyclic ,, more power then I ever need with the speed for 3D
Comments: I fly Planes and Choppers
Baz
December 16, 2017Application(s): Giant Scale 50cc QQue Yak on all surfaces
Comments: These servos were on the plane for 17 years and were great. The plane finally fell apart - nothing lasts forever!! and I took the servos out and will use them again after greasing up the gears.