Servo Specs, Reviews, & Comparison Tool
Cirrus CS-3 - Micro Joule Servo
Specifications
| Last Updated: | 2025-08-04 |
| Modulation: | (add) |
| Torque: |
4.8V: 7.00 oz-in (0.50 kg-cm) |
| Speed: |
4.8V: 0.14 sec/60° |
| Weight: | 0.11 oz (3.1 g) |
| Dimensions: |
Length:0.79 in (20.1 mm) Width:0.24 in (6.1 mm) Height:0.24 in (6.1 mm) |
| Motor Type: | (add) |
| Gear Type: | (add) |
| Rotation/Support: | (add) |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | JST |
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Notes
- The discontinued Cirrus CS-3 is an ultra-lightweight pico-class analog servo, renowned for being one of the smallest and lightest servos ever mass-produced. Weighing in at just a few grams, it is a highly specialized component designed exclusively for the most demanding indoor and micro RC aircraft. The CS-3 is the heart of many record-setting indoor duration models, "penny plane" type flyers, and intricate micro-scale projects where the weight of a standard pico servo would be considered excessive. Its sole purpose is to provide basic proportional control with the absolute minimum penalty in weight and current consumption, enabling the creation of models that truly push the envelope of lightweight flight.
- The identity of the CS-3 is its extreme minimalism. Every aspect of its design is optimized for weight reduction. It provides just enough power to move the tiny control surfaces of a feather-light model in the calm air of an indoor environment. For the dedicated group of builders and pilots who compete in indoor disciplines or who simply enjoy the challenge of building the lightest possible aircraft, the CS-3 is a legendary and essential tool. It represents a commitment to the art and science of micro-aviation.
- For the advanced robotics researcher or hobbyist, the CS-3 opens up possibilities in the realm of pico-robotics. It is a critical component for building bio-inspired robots that mimic the size and weight of insects. It could be used to actuate the legs of a miniature walker, the wings of a micro-ornithopter, or the sensor whiskers on a tiny exploratory robot. When a project's scale is so small that every milligram matters, the CS-3 provides a solution for adding motion.
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