Graupner DES 577 BB

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-08

Identity
Brand
Product Number	7944
Category	Hobby
Performance
Torque	6.0V 72.33 oz-in 4.8V 58.33 oz-in Bottom 10%
Speed	6.0V 0.15 sec/60° 4.8V 0.20 sec/60° Below Average
Physical
Weight	1.27 ozTop 10%
Dimensions	L 1.555 in W 0.768 in H 1.535 in
Drivetrain
Motor Type	Brushed
Gears	Karbonite
Gear Spline/Teeth	25 T
Rotation/Support	Single Bearing
Control & Signal
Modulation	Digital
Rotational Range	90°
Pulse Cycle	5000 ms
Neutral Position	1500 µs
Control System	PWM
Programmable	Yes
Electrical & Environment
Operating Voltage	4.8–6 V
Idle Current	0.006 A
Connectivity
Connector	JR (Universal)

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Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Bottom 10% Stronger than 6% of 1043 Digital Standard servos at 4.8V
Speed	Below Average Faster than 11% of 1041 Digital Standard servos at 4.8V
Weight	Top 10% Lighter than 97% of 1902 Digital Standard servos

Performance Analysis

Shaft Power	0.54–0.89 W
Power Density	0.486 W/in³ More power-dense than 3% of 1759 Digital Standard servos
Torque Density	1.6203 oz-in/g Stronger than 13% of 1036 Digital Standard servos
Torque-to-Volume Ratio	31.82 oz-in/in³ Denser torque than 5% of 1042 Digital Standard servos
Speed-to-Weight	0.13889 (1/sec·g) Faster than 65% of 1033 Digital Standard servos
Speed-Torque Trade-off	11.67 Better balanced than 17% of 1031 Digital Standard servos
Torque Gain per Volt	20.00%/V More voltage-responsive (torque) than 79% of 850 Digital Standard servos
Speed Gain per Volt	27.78%/V More voltage-responsive (speed) than 98% of 871 Digital Standard servos
Voltage Range Width	1.2 V Wider voltage range than 14% of 1539 Digital Standard servos