Servo Specs, Reviews, & Comparison Tool
Blue Bird BMS-706 - Hi Speed Low Profile Servo
Specifications
| Last Updated: | 2025-08-04 |
| Modulation: | Analog |
| Torque: |
4.8V: 65.00 oz-in (4.68 kg-cm) 6.0V: 73.00 oz-in (5.26 kg-cm) |
| Speed: |
4.8V: 0.13 sec/60° 6.0V: 0.11 sec/60° |
| Weight: | 0.92 oz (26.1 g) |
| Dimensions: |
Length:1.65 in (41.9 mm) Width:0.85 in (21.6 mm) Height:0.87 in (22.1 mm) |
| Motor Type: | (add) |
| Gear Type: | (add) |
| Rotation/Support: | Dual Bearings |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The Blue Bird BMS-706 is a high-performance digital servo specifically designed for the demanding role of tail rotor control on 450-size and larger electric helicopters. It builds upon the legacy of speed-focused tail servos by incorporating a precise digital controller. This digital interface allows the servo to respond more quickly and with greater accuracy to the signals from the gyro. It also provides significantly more holding power, which helps to prevent the tail from being pushed around by aerodynamic forces during fast forward flight or maneuvers. The BMS-706 is engineered from the ground up to provide a rock-solid, high-fidelity tail control system.
- The defining characteristic of the BMS-706 is its combination of digital precision and high speed. The result is a tail that feels incredibly locked-in and responsive. The servo can make the minute, high-frequency adjustments needed for a perfect hold, but also has the raw speed for breathtakingly fast, yet precise, pirouettes. For a helicopter pilot, the quality of the tail servo is one of the most important factors in the overall feel of the machine, and the BMS-706 is designed to deliver a truly top-tier experience.
- For roboticists, the BMS-706’s performance profile is ideal for applications that require extremely fast and precise closed-loop control. It would be an outstanding actuator for a high-speed, vision-guided tracking system, such as a gimbal that needs to keep a camera perfectly aimed at a moving target. It would also be well-suited for haptic feedback devices or force-feedback systems, where the servo's ability to respond quickly and hold position against an external force is a key requirement. It is a specialized tool for high-speed, high-precision robotic control.
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