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Technical Specifications
Last Updated: 2026-09-14| Identity | |
| Brand |  |
| Product Number | DS929MG |
| Category | Hobby |
| Performance | |
| Torque |
4.8V34.72 oz-in2.50 kg-cm0.2 N-mAbove Average |
| Speed |
4.8V0.12 sec/60°500.0 deg/s83.3 RPMAverage |
| Running Current |
4.8V0.200 A200 mABelow Average |
| Stall Current | ≤0.96 A≤960 mAAverage |
| Physical | |
| Weight | 0.44 oz12.5 gAverage |
| 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 |
| Rotation Mode | Positional |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Direction | Clockwise |
| Rotational Range | 80° |
| Pulse Width | 1100-1900 µs |
| Neutral Position | 1500 µs |
| Dead Band | 3 µs |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | Direct |
| Regulator Type | Direct |
| Temperature | -20–60 °C-4–140 °F |
| 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.
Class Comparison
| Torque | Above Average Stronger than 66% of 349 Digital Micro servos at 4.8V |
| Speed | Average Faster than 50% of 347 Digital Micro servos at 4.8V |
| Weight | Average Lighter than 40% of 597 Digital Micro servos |
| Running Current | Below Average Lower draw than 32% of 60 Digital Micro servos at 4.8V |
| Stall Current | Average Lower draw than 56% of 188 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.54 W |
| Power Density | 1.377 W/in³ More power-dense than 35% of 563 Digital Micro servos |
| Torque Density | 2.7776 oz-in/g Stronger than 62% of 349 Digital Micro servos |
| Torque-to-Volume Ratio | 89.37 oz-in/in³ Denser torque than 65% of 345 Digital Micro servos |
| Speed-to-Weight | 0.66667 (1/sec·g) Faster than 43% of 347 Digital Micro servos |
| Speed-Torque Trade-off | 4.17 Better balanced than 66% of 345 Digital Micro servos |
| Current-per-Torque Ratio | 0.0276 A/oz-in More efficient than 71% of 98 Digital Micro servos |
| Idle-to-Running Current Ratio | 0.050 Lower idle draw than 39% of 42 Digital Micro servos |
| No-Load vs Stall Current Spread | 4.80 Narrower current spread than 86% of 45 Digital Micro servos |
| Voltage Range Width | 1.2 V Wider voltage range than 45% of 496 Digital Micro servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0038 Finer dead band than 9% of 182 Digital Micro servos |
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 (10)
Includes 3 reviews aggregated from around the web.
Retailers give it 5/5 on very small samples, and sellers call it popular for park flyers and small helicopters. Users describe it as a good-value metal-gear micro. Independent feedback is limited.
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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.