Blue Bird BMS-631 - Super Fast Standard Servo


Modulation: Analog
Torque: 4.8V: 69.00 oz-in (4.97 kg-cm)
6.0V: 86.00 oz-in (6.19 kg-cm)
Speed: 4.8V: 0.10 sec/60°
6.0V: 0.08 sec/60°
Weight: 1.80 oz (51.0 g)
Dimensions: Length:1.60 in (40.6 mm)
Width:0.80 in (20.3 mm)
Height:1.50 in (38.1 mm)
Motor Type: (add)
Gear Type: Metal
Rotation/Support: Dual Bearings
Rotational Range: (add)
Pulse Cycle: (add)
Pulse Width: (add)
Connector Type: S
Blue Bird BMS-631
Brand: Blue Bird
Product Number: (add)
Typical Price: 11.76 USD
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Reviews of Blue Bird BMS-631 (2)

  • Rating:

    Application(s): Tamiya Lunchbox and DT01

    Comments: Its a budget servo that performs like a beast.

    Replaced an aging servo in my dt01 with one of these and was super impressed.
    Its that impressive that I got another one for my lunchbox. Replacing a Savox 0251mg. Its been taking a huge beating and not one glitch. Super fast and accurate.

    Can highly recommend. Will buy more for future projects.

  • Rating:

    Application(s): I use the servos in 60 size (5-7 pound, 600-850 sq inch) sport and aerobatic models.

    Comments: They mount where the previously held Hitec HS425BB was without modification.
    The street price is $12.95 at a popular internet supply site.

    I feel entirely confident using these after 3-4 hours of bench and flight time.

    I give this a 5 star rating not because of pure quality (they're very good), but because the performance for the cost is superb (value).

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