Servo Specs, Reviews, & Comparison Tool
EXI D121F Servo
Specifications
| Last Updated: | 2025-08-06 |
| Modulation: | Digital |
| Torque: |
6.0V: 111.10 oz-in (8.00 kg-cm) |
| Speed: |
6.0V: 0.22 sec/60° |
| Weight: | 1.31 oz (37.0 g) |
| Dimensions: |
Length:1.54 in (39.1 mm) Width:0.76 in (19.3 mm) Height:1.52 in (38.6 mm) |
| Motor Type: | Brushed |
| Gear Type: | Plastic |
| Rotation/Support: | Single Bearing |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The discontinued EXI D121F is a high-quality digital servo in the popular 9-gram class that is enhanced with a fast and smooth coreless motor. This servo is designed to be a premium, high-performance actuator for a wide range of sub-micro applications. It is an outstanding choice for the cyclic controls on a 450-class helicopter, where its combination of digital precision and coreless speed provides a very responsive and locked-in feel. It is also a superb servo for the flight controls on any high-performance park flyer or small aerobatic plane where a crisp, fast, and smooth response is desired by the pilot.
- The identity of the D121F is its role as a superior-quality, versatile sub-micro servo. The digital controller provides the strong holding power and accurate centering that is essential for precision flying. The coreless motor elevates this performance by providing a much faster and smoother transit, free from the hesitation of conventional motors. It is a servo for the discerning pilot who is looking for a significant, tangible upgrade in the feel and performance of their model's control system.
- In the world of advanced micro-robotics, the D121F is a highly capable actuator. Its combination of digital precision and coreless speed makes it ideal for building a fast and accurate small robotic arm or a dynamic walking robot that needs to move with both speed and grace. It is a premium component for any compact robotics project that requires a higher level of performance and a more refined motion profile."