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Technical Specifications
Last Updated: 2026-07-28
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Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HD-D65HB |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V20.83 oz-in1.50 kg-cm0.1 N-m |
| Speed |
6.0V0.07 sec/60°857.1 deg/s142.9 RPM |
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 0.23 oz6.5 g |
| Dimensions |
L 0.84 in W 0.45 in H 0.95 in L 21.3 mm W 11.5 mm H 24.0 mm |
| Case Material | (add) |
| Drivetrain | |
| Motor Type | Brushed |
| Motor Drive | (add) |
| Gears | Plastic |
| Gear Spline/Teeth | 25 T estimate |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | Bushing |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | 20 ms |
| Pulse Width | (add) |
| Neutral Position | 1500 µs |
| Dead Band | (add) |
| Refresh Rate | (add) |
| Angle Sensor | (add) |
| Control System | PWM |
| Programmable | (add) |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| 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.
Performance Analysis
| Shaft Power | 0.55 W |
| Torque Density | 3.2046 oz-in/g |
| Torque-to-Volume Ratio | 58.00 oz-in/in³ |
| Power Density | 1.532 W/in³ More power-dense than 42% of the 544 Digital Micro servos in the database |
| Speed-to-Weight | 2.19780 (1/sec·g) |
| Speed-Torque Trade-off | 1.46 |
| Voltage Range Width | 1.2 V Wider voltage range than 32% of the 407 Digital Micro servos in the database |
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Reviews (1)
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Lainchy
May 29, 2018Application(s): Tail servo for HK450GT (Trex 450 clone)
Comments: Great little tail servo on any gyro tbh. These are reasonably fast even on 5v. No problems for me.