Graupner HVC 660 BBMG

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-26

Identity
Brand
Product Number	S4063
Category	Hobby
Discontinued	Yes
Performance
Torque	7.4V 131.94 oz-in 6.0V 111.11 oz-in 4.8V 97.20 oz-in Below Average
Speed	7.4V 0.12 sec/60° 6.0V 0.15 sec/60° 4.8V 0.18 sec/60° Below Average
Physical
Weight	1.34 ozTop 10%
Dimensions	L 1.378 in W 0.63 in H 1.378 in
Drivetrain
Motor Type	Coreless
Gears	Steel
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Control System	PWM
Programmable	Yes
Electrical & Environment
Operating Voltage	4.8–8.4 V
Connectivity
Connector	JR (Universal)

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Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Below Average Stronger than 17% of 1055 Digital Standard servos at 4.8V
Speed	Below Average Faster than 21% of 1038 Digital Standard servos at 4.8V
Weight	Top 10% Lighter than 96% of 1872 Digital Standard servos

Performance Analysis

Shaft Power	1.00–2.03 W
Power Density	1.700 W/in³ More power-dense than 37% of 1762 Digital Standard servos
Torque Density	2.5579 oz-in/g Stronger than 34% of 1048 Digital Standard servos
Torque-to-Volume Ratio	81.26 oz-in/in³ Denser torque than 32% of 1053 Digital Standard servos
Speed-to-Weight	0.14620 (1/sec·g) Faster than 71% of 1031 Digital Standard servos
Speed-Torque Trade-off	17.50 Better balanced than 29% of 1029 Digital Standard servos
Voltage Range Width	3.6 V Wider voltage range than 85% of 1552 Digital Standard servos