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Technical Specifications
Last Updated: 2026-09-13| 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
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
Below Average
|
| Physical | |
| Weight | 2.24 oz63.5 gAverage |
| 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 |
| 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) |
| 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.
Class Comparison
| Torque | Average Stronger than 60% of 1043 Digital Standard servos at 4.8V |
| Speed | Below Average Faster than 22% of 1041 Digital Standard servos at 4.8V |
| Weight | Average Lighter than 47% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.67–3.94 W |
| Power Density | 1.952 W/in³ More power-dense than 43% of 1759 Digital Standard servos |
| Torque Density | 4.0945 oz-in/g Stronger than 62% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 128.64 oz-in/in³ Denser torque than 56% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.08749 (1/sec·g) Faster than 20% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 46.80 Better balanced than 72% of 1031 Digital Standard servos |
| Torque Gain per Volt | 19.23%/V More voltage-responsive (torque) than 76% of 850 Digital Standard servos |
| Speed Gain per Volt | 16.68%/V More voltage-responsive (speed) than 59% of 871 Digital Standard servos |
| Voltage Range Width | 1.2 V Wider voltage range than 21% of 1539 Digital Standard servos |
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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.