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Technical Specifications
Last Updated: 2026-09-14Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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| Identity | |
| Brand |  |
| Product Number | DS929MG |
| Category | Hobby |
| Performance | |
| Torque |
4.8V34.72 oz-in2.50 kg-cm0.2 N-m |
| Speed |
4.8V0.12 sec/60°500.0 deg/s83.3 RPM |
| Running Current |
4.8V0.200 A200 mA |
| Stall Current | ≤0.96 A≤960 mA |
| Physical | |
| Weight | 0.44 oz12.5 g |
| Dimensions |
L 0.89 in W 0.45 in H 0.97 in L 22.6 mm W 11.4 mm H 24.6 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | MOS |
| Gears | Metal |
| Gear Spline/Teeth | 21 T |
| Shaft Size | (add) |
| Rotation Mode | Positional |
| Rotation/Support | Single Bearing |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | Clockwise |
| Rotational Range | 80° |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | 1100-1900 µs |
| Neutral Position | 1500 µs |
| Dead Band | 3 µs |
| Refresh Rate | (add) |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | Direct |
| Regulator Type | Direct |
| Temperature | -20–60 °C-4–140 °F |
| Water Rating | (add) |
| Certification | CE | ROHS |
| Idle Current | 0.010 A10 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 215 mm8.46 in |
| Origin | |
| Country of Origin | China |
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 | 0.54 W |
| Torque Density | 2.7776 oz-in/g Stronger than 64% of the 240 Digital Micro servos in the database |
| Torque-to-Volume Ratio | 89.37 oz-in/in³ Denser torque than 66% of the 242 Digital Micro servos in the database |
| Power Density | 1.377 W/in³ More power-dense than 35% of the 544 Digital Micro servos in the database |
| Speed-to-Weight | 0.66667 (1/sec·g) Faster than 41% of the 240 Digital Micro servos in the database |
| Speed-Torque Trade-off | 4.17 Better balanced than 72% of the 242 Digital Micro servos in the database |
| Current-per-Torque Ratio | 0.0276 A/oz-in More efficient than 80% of the 47 Digital Micro servos in the database |
| Idle-to-Running Current Ratio | 0.050 Lower idle draw than 49% of the 38 Hobby servos in the database |
| No-Load vs Stall Current Spread | 4.80 Narrower current spread than 70% of the 67 Hobby servos in the database |
| Voltage Range Width | 1.2 V Wider voltage range than 42% of the 407 Digital Micro servos in the database |
| Dead-Band-to-Pulse-Width Ratio | 0.0038 Finer dead band than 5% of the 120 Digital Micro servos in the database |
Notes
Corona's digital MCU+MOSFET design achieves ≤3µs dead band, yielding an effective 1024-step resolution when paired with their compatible dual-conversion receivers.
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Reviews (7)
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somercguy
March 30, 2015Application(s): 1/16 and 1/18 rc cars
Comments: Bought about 20 of these so far and haven't had one fail yet.
Good torque, centering and very reliable. Not as much power or precision as more expensive servos, but comes close. All metal gears seem strong as I've never stripped one. A great servo for a great price.NKMA
September 25, 2014Application(s): RC heli 450 PRO
Comments: I have flied some 1000 flights with this servo on swash
on 450 PRO's. I like them, but they have a weak spot -
the "fasteners" on the case. They break easy on impact.
They can be strengthened somewhat by filling CA in the
"holes" under the wings, but they should really be redesigned
to not break so easy.
Still, very good for the price.Fy
July 22, 2014Application(s): Trex 450
Comments: More than 300 flights And works perfectly
No one is better for the price.Jayson
October 14, 2012Application(s): For 450 FBL cyclic
Comments: I use this servo on my 450 fbl , no problem . and now have 77 flight already .
2Doggs
September 26, 2012Application(s): Cyclic on 450 Pro heli
Comments: Being so cheap, I had to give these a try.
On the positive side, the speed on the servo tester pretty much matches the claimed 0.11s @ 6v - but all of my 929's had a horrible amount of gear slop.
In flight, they seem to work ok, but the heli just feels a bit loose. They worked better than Henge 922's, but not so well as Henge 933's, which in turn were not as good as Align DS410's.
I give them a three star rating only because they are so cheap.
very poor servo
September 20, 2012Application(s): elev. rud and pitch on 400 walkera elestric 400do2
Comments: The plastic is cheep and broke on all three servos were they connect to the helicopter in +76 degree tempitures, and they were even mounted in rubber. Very fragel weak plastic, I havent seen plastic like that sence the 50's.
martinlmtl
September 14, 2012Application(s): Cyclic on 450 size helicopter
Comments: Well it seems a good deal at start but after more than 100 takeoff, I can say these servos have many problems. 1st they can't center well and 2nd the gears have some play. I will never buy these servos again because even if they are not expensive, they are almost unusable on an helicopter.