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Bluebird BMS-2109 ( Titanium Gear Coreless Digital Servo )

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Product Description

At TDRC we are proud to present the new sleeping lion of the high torque servo world! High quality, specs that cannot be competed with, and the best price period! 373 ounces at 8.4 volts and under 50.00 a servo!

Particular Specification

Electrical Specification (Function Of The Performance)
Torque At 6.0V 19.2 kg-cm / 266.7 oz-in
Torque At 7.4V 23.3 kg-cm / 323.6 oz-in
Torque At 8.4V 26.8 kg-cm / 372.3 oz-in
Speed At 6.0V 0.076 sec / 60°
Speed At 7.4V 0.061 sec / 60°
Speed At 8.4V 0.052 sec / 60°
Apply Environmental Condition
Operating Voltage Range 6.0V ~ 8.5V ( 5 ~ 6 Cell Ni-MH or 2S Li-Poly / 2S Li-Fe )
Control Specification
Control System Digital Controller / 12-Bits ( 4096 Steps )
Dead Bend Width 0.001ms (1us)
Mechanical Specification
Ball Bearing Dual
Type Gears Titanium Alloy Gears
Motor Type Premium Coreless Motor
Horn / Gear Spline 25 Teeth (Same as F-Type)
Outline Drawing
Dimension (mm) 40.5 x 20 x 39 mm / 1.59 x 0.79 x 1.54 in
Weight (gram) 72.0 ± 1 grams / 2.54 oz

Product Picture /
Dimension Sketch


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Product Reviews

  1. Unbelievable servo for the money 5 Star Review

    Posted by on 4th Jul 2016

    These servos are amazing so far. It took a 55CC Extra that was loose and just flied sloppy and turned it into a very tight and precise plane. The speed is amazing and their center is predictable every time. Absolutely recommend them.

  2. great servos for a reasonable cost 5 Star Review

    Posted by on 9th May 2016

    I really haven't had the chance to really put the servo to the test as I am attempting to put the electronics together in this 35% YAK 54 from Pilot. but I am very excited about the quality and performance that I have found from running it on my servo tester. I need 4 servos in the wings 2 in the elevator. Then I would like some advice on rudder and throttle.
    Am excited about the quality and avaialabillity of these servos

  3. best servos on the market 5 Star Review

    Posted by on 15th Feb 2016

    No one can compete withe the price and specs these put out. They are accurate, center well, and have brute holding power. A+
    Also gotta love these come with a hex head socket cap spline screw i stead of the usual crappy Phillips head screws. Delivery was super fast!

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