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Technical Specifications
Last Updated: 2026-10-08| Identity | |
| Brand |  |
| Product Number | HD-9150MG |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
222.20 oz-in
16.00 kg-cm
1.6 N-m
4.8V
180.50 oz-in
13.00 kg-cm
1.3 N-m
Average
|
| Speed |
6.0V
0.18 sec/60°
333.3 deg/s
55.6 RPM
4.8V
0.20 sec/60°
300.0 deg/s
50.0 RPM
Below Average
|
| Stall Current | 2.6–3.2 A2600–3200 mAAverage |
| Physical | |
| Weight | 2.15 oz61.0 gAverage |
| Dimensions |
L 1.60 in W 0.79 in H 1.66 in L 40.6 mm W 20.1 mm H 42.2 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Pulse Cycle | 20 ms |
| Pulse Width | 1000-2000 µs |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Temperature | -10–50 °C14–122 °F |
| Idle Current | 0.005 A5 mA |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 300 mm11.81 in |
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 40% of 1043 Digital Standard servos at 4.8V |
| Speed | Below Average Faster than 12% of 1041 Digital Standard servos at 4.8V |
| Weight | Average Lighter than 57% of 1902 Digital Standard servos |
| Stall Current | Average Lower draw than 51% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 1.67–2.28 W |
| Power Density | 1.088 W/in³ More power-dense than 20% of 1759 Digital Standard servos |
| Torque Density | 2.9590 oz-in/g Stronger than 41% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 86.02 oz-in/in³ Denser torque than 34% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.08197 (1/sec·g) Faster than 16% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 36.10 Better balanced than 59% of 1031 Digital Standard servos |
| Current-per-Torque Ratio | 0.0177 A/oz-in More efficient than 39% of 315 Digital Standard servos |
| Torque Gain per Volt | 19.25%/V More voltage-responsive (torque) than 76% of 850 Digital Standard servos |
| Speed Gain per Volt | 9.25%/V More voltage-responsive (speed) than 13% of 871 Digital Standard servos |
| Voltage Range Width | 1.2 V Wider voltage range than 20% of 1539 Digital Standard servos |
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Reviews (4)
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Dalton
July 11, 2013Application(s): Elevator and Ailerons on a 50cc Yak 54
Comments: Powerful servo with a good response time for a fantastic price. I've had these on the elevators and ailerons of my 50cc Aeroworks Yak flying imac and light 3D for about a year now with ZERO problems. They have performed fantastically- I'm about to buy more for a 50cc Extra.
Conrad
April 16, 2013Application(s): 1/8th Buggy Steering
Comments: Use it with JR 40Mhz transmitter. Servo jittered. Changed the transmitter from PPM to PCM. Jitters gone, centers 100%. No problems and using for 3 years now.
Mike
July 9, 2012Application(s): Pattern 2 mater aileron and rudder
Comments: Excellent choice. I love what you get for the price.
schu
June 15, 2010Application(s): 30cc Gas airplane.
Comments: These servos are pretty strong and center pretty well, but they have one major flaw. They twitch and extend to one side when they are powered on without a signal. The new spektrum RX gear doesn't send a signal to the servo until they find the TX so with plugged into my newer AR6200 they all twitch.
On my older firmware AR6200, they don't twitch because the RX sends a centering signal to the servos until it finds the TX.