Blue Bird BLS-1704

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-10

Identity
Brand
Product Number	BBR-BLS-1704
Category	Hobby
Performance
Torque	8.4V 269.47 oz-in 7.4V 237.52 oz-in 6.0V 191.68 oz-in
Speed	8.4V 0.03 sec/60° 7.4V 0.04 sec/60° 6.0V 0.05 sec/60°
Physical
Weight	2.70 ozBelow Average
Dimensions	L 1.594 in W 0.787 in H 1.535 in
Drivetrain
Motor Type	Brushless
Gears	Metal
Gear Spline/Teeth	25 T
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Neutral Position	1500 µs
Dead Band	1 µs
Refresh Rate	333 Hz
Control System	PWM
Electrical & Environment
Operating Voltage	4.5–8.5 V
Power Source	2S Li-Po / 2S Li-Fe
Connectivity
Connector	JR (Universal) estimate
Origin
Country of Origin	Taiwan

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Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Weight

Below Average

Lighter than 18% of 1902 Digital Standard servos

Performance Analysis

Shaft Power	7.09–16.61 W
Power Density	8.625 W/in³ More power-dense than 95% of 1759 Digital Standard servos
Torque Density	2.5056 oz-in/g
Torque-to-Volume Ratio	99.54 oz-in/in³
Speed-to-Weight	0.26144 (1/sec·g)
Speed-Torque Trade-off	9.58
Voltage Range Width	4.0 V Wider voltage range than 93% of 1539 Digital Standard servos