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Technical Specifications
Last Updated: 2026-07-10| Identity | |
| Brand |  |
| Category | Hobby |
| Performance | |
| Torque |
4.8V34.70 oz-in2.50 kg-cm0.2 N-mBelow Average |
| Speed |
4.8V0.05 sec/60°1,200.0 deg/s200.0 RPMTop 10% |
| Physical | |
| Weight | 0.79 oz22.3 gAverage |
| Dimensions |
L 1.38 in W 0.59 in H 1.19 in L 35.0 mm W 14.9 mm H 30.1 mm |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Plastic |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 60° |
| Pulse Cycle | 3 ms |
| Neutral Position | 1500 µs |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Connectivity | |
| Connector | JR (Universal) |
| 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 | Below Average Stronger than 17% of 224 Digital Mini servos at 4.8V |
| Speed | Top 10% Faster than 99% of 225 Digital Mini servos at 4.8V |
| Weight | Average Lighter than 59% of 455 Digital Mini servos |
Performance Analysis
| Shaft Power | 1.28 W |
| Power Density | 1.341 W/in³ More power-dense than 41% of 426 Digital Mini servos |
| Torque Density | 1.5561 oz-in/g Stronger than 16% of 219 Digital Mini servos |
| Torque-to-Volume Ratio | 36.25 oz-in/in³ Denser torque than 10% of 224 Digital Mini servos |
| Speed-to-Weight | 0.89686 (1/sec·g) Faster than 96% of 220 Digital Mini servos |
| Speed-Torque Trade-off | 1.74 Better balanced than 2% of 223 Digital Mini servos |
| Voltage Range Width | 1.2 V Wider voltage range than 26% of 289 Digital Mini servos |
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Reviews (5)
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pradip
May 6, 2020Application(s): For Trex 450
Comments: Very good servo for the price. surviving for two years, several crashes.
AJ
October 2, 2015Application(s): 450 tail with ZYX S2 gyro
Comments: Make sure to note that this and all 9257 clones are 4.8v. only. They will survive 5v. but burn soon at 6v.
Quadfinger
March 30, 2013Application(s): Used this for the tail on a 450 size heli.
Comments: While it worked, it did well. Unfortunately, it only lasted 8 flights then quit. Looks like several people have had the same issues. Wont be buying another one, and cannot recommend it.
M
April 26, 2012Application(s): Helicopter tail control
Comments: The servo failed and stopped working. Prior to this happening it was working great. I read that they have soldering issues. I will open her up and check the wire connections.
turko
January 27, 2011Application(s): tail rotor servo on a blade 400 heli
Comments: Very fast, centers well, works great as tail servo.Only downside is mine buzzes alot.