GWS S777FCG 6BB Servo

Specifications

Source: Most data comes from the manufacturer but some data is sourced from our loyal community.

Last Updated:	2025-08-07
Modulation:	Analog
Torque:	4.8V: 361.00 oz-in (25.99 kg-cm) 6.0V: 431.00 oz-in (31.04 kg-cm)
Speed:	4.8V: 0.12 sec/60° 6.0V: 0.10 sec/60°
Weight:	6.70 oz (189.9 g)
Dimensions:	Length:2.56 in (65.0 mm) Width:1.26 in (32.0 mm) Height:2.77 in (70.4 mm)
Motor Type:	(add)
Gear Type:	(add)
Rotation/Support:	(add)
Rotational Range:	(add)
Pulse Cycle:	(add)
Pulse Width:	(add)
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The discontinued GWS S777FCG 6BB is a high-performance, giant-scale servo from the premier S777 line, with the ""F"" designation indicating it is tuned for ""Fast"" transit speeds. It combines this speed with the incredible smoothness of a six-ball-bearing (6BB) supported gear train and the durability of Carbonite Gears (CG). This servo is engineered for giant-scale applications where a rapid response is just as important as high power. It is an outstanding choice for the large ailerons on a 25% to 35% scale 3D or aerobatic aircraft to achieve a very high roll rate. It is also a fantastic rudder servo for enabling crisp, fast snap maneuvers.
The character of the S777FCG 6BB is its agile, giant-scale performance. It allows pilots of very large aircraft to have a control system that feels nimble and responsive, not slow and heavy. This can completely transform the flying experience of a large 3D plane, making it feel much more reactive and capable. The 6-ball-bearing gear train ensures that this high-speed performance is delivered with the precision and accuracy that is essential for confident, aggressive flying.
For roboticists, the GWS S777FCG 6BB's combination of size, speed, and precision is very valuable. It would be an excellent choice for the primary joints of a large but fast-moving robotic arm, or for any large-scale automation task where cycle time is a critical factor. It enables the creation of large robots that can move with surprising speed and agility."