Servo Specs, Reviews, & Comparison Tool
Cirrus CS-55 - Deluxe Standard Servo
Specifications
| Last Updated: | 2025-08-04 |
| Modulation: | (add) |
| Torque: |
4.8V: 42.60 oz-in (3.07 kg-cm) |
| Speed: |
4.8V: 0.20 sec/60° |
| Weight: | 1.60 oz (45.4 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: | Brushed |
| Gear Type: | (add) |
| Rotation/Support: | Bushing |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The discontinued Cirrus CS-55 is a compact and efficient analog servo that sits in the thin wing" category. It is specifically designed for installation in the slender wings of sailplanes and gliders where a standard-sized servo would be too thick and create unacceptable aerodynamic drag. The CS-55 provides a good balance of power and low weight making it ideal for actuating the ailerons and flaps on a wide variety of thermal and slope soaring gliders. Its slim profile allows it to be mounted internally preserving the clean efficient lines of the airfoil and maximizing the aircraft's performance.
- The key characteristic of the CS-55 is its specialized form factor. For the soaring pilot maintaining a smooth and efficient wing is paramount. The CS-55 enables a clean professional installation that is both lightweight and aerodynamically efficient. It is known for its reliable smooth analog performance providing the predictable control response that glider pilots need to sense and work with subtle air currents. It is a purpose-built tool that has been a favorite in the soaring community for many years.
- For roboticists and custom builders the CS-55's slim profile is a unique asset. It is an excellent solution for any project that requires an actuator to be placed in a narrow or confined space. It could be used to create the articulated fingers of a slim robotic hand to operate a mechanism within a narrow chassis or for any application where the vertical height of the servo is the primary design constraint. It enables powerful and compact mechanical designs that would be difficult to achieve with conventional servos."
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