Blue Bird BMS-990DMG

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Compatible Hardware

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*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-07-28

Identity
Brand
Category	Hobby
Discontinued	Yes
Performance
Torque	6.0V 125.00 oz-in 4.8V 100.00 oz-in
Speed	6.0V 0.09 sec/60° 4.8V 0.11 sec/60°
Physical
Weight	1.59 ozAbove Average
Dimensions	L 1.598 in W 0.827 in H 1.00 in
Drivetrain
Motor Type	Coreless
Gears	Metal
Gear Spline/Teeth	25 T estimate
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Rotational Range	120°
Pulse Cycle	250 ms
Neutral Position	1520 µs
Control System	PWM
Electrical & Environment
Operating Voltage	4.5–6.5 V
Connectivity
Connector	JR (Universal)

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Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.

Compatible Hardware

Amazon eBay

*Spec is estimated from brand data.

Class Comparison

Weight

Above Average

Lighter than 74% of 251 Digital Low Profile servos

Performance Analysis

Shaft Power	1.68–2.57 W
Power Density	1.943 W/in³ More power-dense than 28% of 215 Digital Low Profile servos
Torque Density	2.2222 oz-in/g
Torque-to-Volume Ratio	75.67 oz-in/in³
Speed-to-Weight	0.20202 (1/sec·g)
Speed-Torque Trade-off	11.00
Voltage Range Width	2.0 V Wider voltage range than 29% of 223 Digital Low Profile servos