Airtronics/ Sanwa 94780M - High Torque Servo

Specifications

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

Last Updated:	2025-08-03
Modulation:	Digital
Torque:	4.8V: 361.00 oz-in (25.99 kg-cm) 6.0V: 423.00 oz-in (30.46 kg-cm)
Speed:	4.8V: 0.19 sec/60° 6.0V: 0.15 sec/60°
Weight:	2.33 oz (66.0 g)
Dimensions:	Length:1.60 in (40.6 mm) Width:0.83 in (21.1 mm) Height:1.50 in (38.1 mm)
Motor Type:	Coreless
Gear Type:	Metal
Rotation/Support:	Dual Bearings
Rotational Range:	(add)
Pulse Cycle:	(add)
Pulse Width:	(add)
Connector Type:	Z

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The discontinued Airtronics 94780M is a digital, high-power servo that redefines the meaning of torque. At the time of its release, it was the highest-torque servo available in a standard-sized case, making it an absolute beast of a performer for the most demanding applications imaginable. This servo is the ultimate choice for the steering of 1/8 scale monster trucks and truggies, where its immense power can effortlessly turn the largest and heaviest of wheels with unwavering authority. It is also the go-to choice for the rudder of giant-scale, 27% and larger aerobatic aircraft, providing the holding power needed to handle the massive control surfaces of these incredible machines. For large, high-power jets, the 94780M is an ideal choice for all control surfaces, offering a level of power and reliability that is essential for these high-speed, high-stress applications.
The 94780M's incredible torque is generated by a powerful motor and transferred through a robust, all-metal gear train that is supported by dual ball bearings. This combination creates a drivetrain that is not only incredibly powerful but also exceptionally durable and precise. The servo's digital controller provides a high-resolution response that gives the user a truly connected and confident feel, even when dealing with the immense forces of these large-scale models. For the hobbyist who is looking for the absolute ultimate in torque and power, the Airtronics 94780M is in a class of its own.

BKoz559

January 23, 2021

Rating:

Application(s): 1/8 Monster Truck Steering

Comments: Using a 94780 for the steering in a Savage Flux XL. Cranks the wheels with authority and transit speed is just right for the size of the truck. Been using the same servo for over 10 years!
Turners dad

March 7, 2012

Rating:

Application(s): Highly modified Traxxas Slash, 1/8 th scale nitro truggy steering

Comments: This is a fast, very smooth servo. A whisper larger than stock but not an issue, enough power to crack walnuts with. I want to buy 2 more when I can.