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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | SPMSS6250 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
8.4V
382.00 oz-in
27.51 kg-cm
2.7 N-m
7.4V
339.00 oz-in
24.41 kg-cm
2.4 N-m
6.0V
271.00 oz-in
19.51 kg-cm
1.9 N-m
Average
|
| Speed |
8.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
7.4V
0.11 sec/60°
545.5 deg/s
90.9 RPM
6.0V
0.13 sec/60°
461.5 deg/s
76.9 RPM
Average
|
| Stall Current | ≤4.9 A≤4900 mABelow Average |
| Physical | |
| Weight | 2.10 oz59.5 gAverage |
| Dimensions |
L 1.61 in W 0.82 in H 1.18 in L 40.9 mm W 20.8 mm H 30.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless Brushed |
| Gears | Metal / Steel |
| Gear Spline/Teeth | 23 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Dead Band | 4 µs |
| Control System | PWM |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Water Rating | Waterproof |
| Idle Current | 0.010 A10 mA |
| Connectivity | |
| Connector | Z estimate |
| Wire Length | 200 mm7.87 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 62% of 1060 Digital Standard servos at 6.0V |
| Speed | Average Faster than 57% of 1045 Digital Standard servos at 6.0V |
| Weight | Average Lighter than 63% of 1880 Digital Standard servos |
| Stall Current | Below Average Lower draw than 28% of 570 Digital Standard servos |
Performance Analysis
| Shaft Power | 3.85–7.85 W |
| Power Density | 5.038 W/in³ More power-dense than 80% of 1768 Digital Standard servos |
| Torque Density | 4.5546 oz-in/g Stronger than 71% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 173.96 oz-in/in³ Denser torque than 75% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.12928 (1/sec·g) Faster than 61% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 35.23 Better balanced than 58% of 1034 Digital Standard servos |
| Current-per-Torque Ratio | 0.0181 A/oz-in More efficient than 34% of 331 Digital Standard servos |
| Torque Gain per Volt | 17.07%/V More voltage-responsive (torque) than 62% of 873 Digital Standard servos |
| Speed Gain per Volt | 18.53%/V More voltage-responsive (speed) than 72% of 874 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 56% of 1560 Digital Standard servos |
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Reviews (5)
Includes 5 reviews aggregated from around the web.
There are few reviews for this servo on the web. Owners who use it report good results: one runs two in crawlers with heavy brass wheel weights and has taken them on long trail runs and even submerged them with no problems, and a Losi Baja Rey owner says everything works great after swapping it in. One buyer reported a new unit not returning to center after installation.
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