Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-07-28Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
Preferences are saved automatically.
| Identity | |
| Brand |  |
| Product Number | JRPS821 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
88.00 oz-in
6.34 kg-cm
0.6 N-m
4.8V
72.00 oz-in
5.18 kg-cm
0.5 N-m
|
| Speed |
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
4.8V
0.19 sec/60°
315.8 deg/s
52.6 RPM
|
| Running Current | (add) |
| Stall Current | (add) |
| Shaft Power | 0.70–1.08 W |
| Physical | |
| Weight | 1.50 oz42.5 g |
| Dimensions |
L 1.50 in W 0.74 in H 1.47 in L 38.1 mm W 18.8 mm H 37.3 mm |
| Case Material | (add) |
| Drivetrain | |
| Motor Type | 3-pole |
| Motor Drive | (add) |
| Gears | Plastic |
| Gear Spline/Teeth | 23 T estimate |
| Rotation Mode | (add) |
| Rotation/Support | Single Bearing |
| 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 | (add) |
| 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 | (add) |
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.
Quick Actions
Similar Active Servos
Reviews (6)
-
Jaden Lobbia
June 7, 2021Application(s): Thunder Tiger Raptor 30 V2
Comments: Used as my cyclic servos, and for my collective. When rebuilding the output gear on the collective servo broke clean off. I don't know if it's user error or not.
Russ
May 3, 2019Application(s): Sig Kadet Mark II w/OS 46LA
Comments: I lost my plane on the 3rd flight , doing a Loop with a Snap Roll on Top ,, lost the Elevator 75% of the way thought the loop and it flow in to the ground .. Out put shaft of the DS821 snapped , I used NO lock Tight or any thing else on it Will never use a DS821 ever again
Joel
December 8, 2014Application(s): All around except throttle, OMP Yak
Comments: First servos I ever bought, six plus years now, sent them in a year ago and they all checked out fine. Recently bought more to replace Hitecs, my 5245 jammed and crashed my plane, no more Hitec for me.
Jimmy
November 22, 2014Application(s): Seagull Edge 540, OS120, throttle servo
Comments: I lost a nice Seagull edge 540 when the throttle servo
gears jamed and it pulled the battery voltage down
to 3.5v, causing the other servos to wander around
aimlessly. I wouldn't recomend this servo on anything.
I'm also switching to Hitec servos in the future.Duckby
January 4, 2012Application(s): Extra 330 68" span all EX rudder
Comments: good nice servo for the price NEVER USE THREAD LOCK it kills the gears. good sports servo not doing 3D so no need for silly fast speeds. done 50 flights with them now with no problems and still tight..
artgorgeous
March 3, 2010Application(s): for my invention
Comments: Very good servo. Powerful and fast.