Servo Specs, Reviews, & Comparison Tool
Caster Racing C-9851 - Car Servo
Specifications
| Last Updated: | 2025-08-04 |
| Modulation: | Digital |
| Torque: |
4.8V: 111.00 oz-in (7.99 kg-cm) 6.0V: 138.00 oz-in (9.94 kg-cm) |
| Speed: |
4.8V: 0.15 sec/60° 6.0V: 0.12 sec/60° |
| Weight: | 2.10 oz (59.5 g) |
| Dimensions: |
Length:1.60 in (40.6 mm) Width:0.80 in (20.3 mm) Height:1.40 in (35.6 mm) |
| Motor Type: | (add) |
| Gear Type: | Metal |
| Rotation/Support: | Bushing |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The discontinued Caster Racing C-9851 is a top-tier digital servo that is purpose-built for applications demanding the absolute highest level of torque and holding power. While it shares the precise digital controller of its siblings, the C-9851 features a motor and a heavy-duty gear train that are optimized for pure strength. This makes it the ultimate steering servo for the most demanding vehicles, such as 1/8 scale race buggies and truggies, or heavyweight monster trucks. In these classes, the servo must have the brute force to turn large, high-traction tires against the immense forces of high-speed cornering and landing from massive jumps. The C-9851 is engineered to do this without flinching.
- The essence of the C-9851 is its immense power. Its ability to hold the wheels in their commanded position, even under the most extreme loads, is its greatest asset. This gives racers a feeling of complete stability and control, allowing them to drive more aggressively and consistently. In a long main event, a weaker servo can fade or struggle, but the C-9851 is designed to deliver its massive torque reliably and without compromise for the entire duration. The robust gear train, often featuring metal components, ensures that this power is delivered through a durable and resilient platform.
- In the world of advanced and heavy-duty robotics, the C-9851 is a formidable actuator. Its incredible torque makes it ideal for the most demanding tasks, such as the primary load-bearing joints of a large, heavy robotic arm or exoskeleton. It is also an outstanding choice for the steering system on a very large, heavy autonomous vehicle or a heavyweight combat robot. When a robotics project requires a standard-sized servo to deliver an almost unbelievable amount of force, the C-9851 is one of the most powerful options available.
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