Servo Specs, Reviews, & Comparison Tool
Arced D591 - Micro Digital Servo
Specifications
| Last Updated: | 2025-08-05 |
| Modulation: | Digital |
| Torque: |
4.8V: 18.10 oz-in (1.30 kg-cm) |
| Speed: |
4.8V: 0.09 sec/60° |
| Weight: | 0.30 oz (8.5 g) |
| Dimensions: |
Length:0.87 in (22.1 mm) Width:0.43 in (10.9 mm) Height:0.86 in (21.8 mm) |
| Motor Type: | (add) |
| Gear Type: | (add) |
| Rotation/Support: | (add) |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The discontinued Arced D591 is a versatile digital servo that serves as an excellent entry point into the world of high-performance digital control. This sub-micro servo is aimed at the hobbyist looking to upgrade from standard analog servos to gain the tangible benefits of a digital controller—namely, a faster response, significantly better centering accuracy, and much greater holding power. The D591 is a superb all-around performer, making it a great choice for the flight controls on a sport park flyer, as a responsive tail servo for a 450-class helicopter, or as a precise steering servo for a 1/18 scale car.
- The core identity of the D591 is that it delivers the "digital advantage" in a straightforward and affordable package. While it forgoes premium features like ball bearings, it focuses on providing the crisp, locked-in feel that transforms the handling of any model. The digital controller actively holds its position against external forces, which gives the pilot or driver a much more confident and connected feel. This servo represents a significant and noticeable performance upgrade that can help any hobbyist fly or drive with greater precision.
- In the world of robotics, the D591's strong holding power and accurate centering make it a very valuable tool. It is an excellent choice for the leg joints of a small walking robot, where holding a steady position is key to stability. It is also a great actuator for a small robotic arm, where its digital precision leads to more accurate and repeatable movements. For builders who need the performance benefits of a digital controller on a budget, the D591 is a fantastic and highly effective solution.