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- Blue Bird Servos
- BMS-555MG
Blue Bird BMS-555MG - Slim Wing Servo
Specifications
Source: Most data comes from the manufacturer but some data is sourced from our loyal community.
Last Updated: |
2025-08-04 |
Modulation: |
Analog |
Torque: |
4.8V: 57.00 oz-in (4.10 kg-cm)
|
Speed: |
4.8V: 0.15 sec/60°
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Weight: |
0.81 oz (23.0 g) |
Dimensions: |
Length:1.18 in (30.0 mm)
Width:0.39 in (9.9 mm)
Height:1.33 in (33.8 mm)
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Motor Type: |
(add) |
Gear Type: |
Metal |
Rotation/Support: |
Single Bearing |
Rotational Range: |
(add) |
Pulse Cycle: |
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Pulse Width: |
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Connector Type: |
(add) |
Brand: |
 |
Product Number: |
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Discontinued? |
Y |
Typical Price: |
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Notes
- The discontinued Blue Bird BMS-555MG is a powerful, low-profile analog "wing" servo, valued for its reliability and strength. It is designed for installation in the wings of larger aircraft, such as .60-size sport planes, medium-sized sailplanes, and scale models where a standard-sized servo would be too tall and create excess drag. The analog controller provides smooth, dependable operation, while the all-metal gear (MG) train ensures that the servo can handle significant loads without risk of stripping. This makes it a very popular and cost-effective choice for actuating ailerons and flaps on a wide variety of larger models.
- The main appeal of the BMS-555MG is that it provides a robust, low-profile solution without the premium cost of a digital or high-voltage servo. For the sport pilot or scale modeler who needs a reliable wing servo that can handle the loads of a larger airframe, it is an excellent choice. It has earned a reputation as a dependable workhorse, known for its long service life and its ability to resist developing slop in the gear train. It provides the strength and durability needed for safe and enjoyable flying with larger aircraft.
- In the robotics field, the BMS-555MG is a very useful component for builders of larger projects on a budget. Its low-profile design allows it to be used in applications where vertical space is limited. Its high-torque analog performance is more than sufficient for many tasks, such as operating large grippers, moving the heavy components of an animatronic display, or for the leg joints of a large walking robot where extreme precision is not the primary concern. It’s a great way to get a lot of power in a compact and affordable package.
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