Graupner Sailwinch 4 - Sail winch Servo

Specifications

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

Last Updated:	2025-08-07
Modulation:	(add)
Torque:	(add)
Speed:	4.8V: 0.11 sec/60° 6.0V: 0.08 sec/60°
Weight:	5.64 oz (160.0 g)
Dimensions:	Length:4.02 in (102.1 mm) Width:2.01 in (51.1 mm) Height:1.89 in (48.0 mm)
Motor Type:	(add)
Gear Type:	(add)
Rotation/Support:	(add)
Rotational Range:	(add)
Pulse Cycle:	(add)
Pulse Width:	(add)
Connector Type:	(add)

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The discontinued Graupner Sailwinch 4 is a powerful, heavy-duty sail winch servo designed for large and giant-scale RC sailboats. The "4" in its name often denotes the number of turns of its drum, providing an enormous amount of line travel for controlling the massive sails on these big boats. The Sailwinch 4 is a true powerhouse, engineered with a very high-torque motor and a heavy-duty gear train to handle the immense loads generated by the large sails of a J-Class or A-Class racing yacht, especially in a strong breeze. It is a servo for the serious giant-scale sailor who needs an absolutely powerful and reliable sail control system.
The identity of the Sailwinch 4 is its overwhelming, specialized power. It has the raw, unyielding strength to sheet in a huge genoa against a 15-knot wind, and the precision to allow for the fine trimming adjustments needed to get a multi-meter-long hull up to speed. It is a mission-critical component for these magnificent models, where the winch is truly the engine of the boat.
For industrial robotics and custom mechatronics, the Graupner Sailwinch 4 is a unique and incredibly powerful tool. Its massive torque and multi-turn capability make it ideal for a wide range of tasks, such as a theatrical curtain-pulling system, a powerful linear actuator using a ball screw, or any application that requires the precise, slow, and incredibly powerful rotation of a heavy object. It is a massive problem-solver for unique engineering challenges.