Servo Specs, Reviews, & Comparison Tool
Blue Bird BMS-611MG Servo
Specifications
| Last Updated: | 2025-08-04 |
| Modulation: | (add) |
| Torque: |
6.0V: 116.00 oz-in (8.35 kg-cm) |
| Speed: |
6.0V: 0.09 sec/60° |
| Weight: | 1.58 oz (44.8 g) |
| Dimensions: |
Length:1.60 in (40.6 mm) Width:0.78 in (19.8 mm) Height:1.52 in (38.6 mm) |
| Motor Type: | 3-pole |
| Gear Type: | Metal |
| Rotation/Support: | Dual Bearings |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The discontinued Blue Bird BMS-611MG is a high-performance analog servo in the standard size class, specifically engineered to deliver exceptionally high speed. While sharing the rugged, all-metal gear (MG) construction of its siblings, the BMS-611MG features a motor and gear ratio that are optimized for rapid transit time. This makes it the ideal choice for applications where servo velocity is the most critical performance metric. A prime example is as a tail rotor servo on large .50 or .90 size nitro helicopters, or on 600-700 class electric helicopters. In this role, its speed allows it to make the lightning-fast corrections commanded by the gyro, resulting in a rock-solid, high-performance tail. It is also an excellent choice for the rudder on a large 3D airplane for executing violent, high-speed yaw maneuvers.
- The defining characteristic of the BMS-611MG is its sheer quickness. It provides an almost instantaneous response to control inputs, which makes a model feel incredibly agile and reactive. For a 3D helicopter pilot, this means crisp, clean pirouettes and precise stops. For an airplane pilot, it means a breathtakingly fast snap roll. The metal gears ensure that this high-speed performance is backed by the durability needed to handle the powerful forces at play in these demanding applications.
- Roboticists can harness this incredible speed for a variety of high-throughput or competitive applications. It would be an excellent choice for a large industrial sorting robot that needs to move with maximum speed to meet production targets. In competitive robotics, such as FIRST Robotics Competition (FRC), its speed could be used to create an ultra-fast intake or scoring mechanism, potentially shaving critical seconds off of cycle times. When a large-scale project needs to be fast, the BMS-611MG is a powerful solution.
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