Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | DS905BLWR |
| Category | Hobby |
| Performance | |
| Torque |
12.0V
905.00 oz-in
65.17 kg-cm
6.4 N-m
8.4V
755.00 oz-in
54.37 kg-cm
5.3 N-m
7.4V
625.00 oz-in
45.00 kg-cm
4.4 N-m
6.6V
505.00 oz-in
36.36 kg-cm
3.6 N-m
6.0V
425.00 oz-in
30.60 kg-cm
3.0 N-m
Above Average
|
| Speed |
12.0V
0.10 sec/60°
625.0 deg/s
104.2 RPM
8.4V
0.13 sec/60°
451.1 deg/s
75.2 RPM
7.4V
0.16 sec/60°
379.7 deg/s
63.3 RPM
6.6V
0.17 sec/60°
359.3 deg/s
59.9 RPM
6.0V
0.17 sec/60°
346.8 deg/s
57.8 RPM
Below Average
|
| Stall Current | 3.5–8.4 A3500–8400 mABottom 10% |
| Physical | |
| Weight | 3.21 oz91.0 gBottom 10% |
| Dimensions |
L 1.57 in W 0.79 in H 1.61 in L 39.9 mm W 20.1 mm H 40.9 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 125° |
| Mechanical Limit | 125° |
| Pulse Cycle | 3.03 ms |
| Pulse Width | 800-2200 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 330 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 6–12 V |
| Temperature | -10–50 °C14–122 °F |
| Water Rating | Water Resistant |
| Connectivity | |
| Connector | JR (Universal) |
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 86% of 1040 Digital Standard servos at 6.0V |
| Speed | Below Average Faster than 23% of 1024 Digital Standard servos at 6.0V |
| Weight | Bottom 10% Lighter than 1% of 1882 Digital Standard servos |
| Stall Current | Bottom 10% Lower draw than 5% of 553 Digital Standard servos |
Performance Analysis
| Torque Density | 4.6703 oz-in/g Stronger than 72% of 1034 Digital Standard servos |
| Torque-to-Volume Ratio | 212.83 oz-in/in³ Denser torque than 85% of 1039 Digital Standard servos |
| Speed-to-Weight | 0.06352 (1/sec·g) Faster than 4% of 1018 Digital Standard servos |
| Speed-Torque Trade-off | 73.53 Better balanced than 90% of 1014 Digital Standard servos |
| Current-per-Torque Ratio | 0.0198 A/oz-in More efficient than 31% of 317 Digital Standard servos |
| Torque Gain per Volt | 18.82%/V More voltage-responsive (torque) than 73% of 851 Digital Standard servos |
| Speed Gain per Volt | 13.37%/V More voltage-responsive (speed) than 36% of 852 Digital Standard servos |
| Voltage Range Width | 6.0 V Wider voltage range than 98% of 1545 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0014 Finer dead band than 54% of 489 Digital Standard servos |
Similar Active Servos
Reviews of Promodeler DS905BLWR
Be the first to review!