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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BLS1809M |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
333.29 oz-in
24.00 kg-cm
2.4 N-m
7.4V
305.52 oz-in
22.00 kg-cm
2.2 N-m
6.0V
249.97 oz-in
18.00 kg-cm
1.8 N-m
Average
|
| Speed |
8.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
7.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
6.0V
0.09 sec/60°
666.7 deg/s
111.1 RPM
Above Average
|
| Physical | |
| Weight | 1.59 oz45.0 gTop 10% |
| Dimensions |
L 1.398 in W 0.591 in H 1.398 in L 35.5 mm W 15.0 mm H 35.5 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Pulse Cycle | 333 ms |
| Refresh Rate | 333 Hz |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Connectivity | |
| Connector | JR (Universal) estimate |
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 57% of 1043 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 80% of 1041 Digital Standard servos at 6.0V |
| Weight | Top 10% Lighter than 91% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 5.14–8.80 W |
| Power Density | 7.622 W/in³ More power-dense than 93% of 1759 Digital Standard servos |
| Torque Density | 5.5549 oz-in/g Stronger than 83% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 216.41 oz-in/in³ Denser torque than 86% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.24691 (1/sec·g) Faster than 90% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 22.50 Better balanced than 40% of 1031 Digital Standard servos |
| Torque Gain per Volt | 13.89%/V More voltage-responsive (torque) than 37% of 850 Digital Standard servos |
| Speed Gain per Volt | 11.90%/V More voltage-responsive (speed) than 27% of 871 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 45% of 1539 Digital Standard servos |
Notes
Optimized for Heli, Airplane, and Jet Aircraft. Working frequency selectable (1520us/333Hz or 760us/560Hz) but requires TBOX Program Card. Servo Grommet suggested for Nitro Heli.
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