Airtronics/ Sanwa 94739Z - Retract Servo

Specifications

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

Last Updated:	2025-08-03
Modulation:	Analog
Torque:	4.8V: 74.00 oz-in (5.33 kg-cm) 6.0V: 93.00 oz-in (6.70 kg-cm)
Speed:	4.8V: 0.42 sec/60° 6.0V: 0.34 sec/60°
Weight:	1.87 oz (53.0 g)
Dimensions:	Length:1.46 in (37.1 mm) Width:0.75 in (19.1 mm) Height:1.44 in (36.6 mm)
Motor Type:	(add)
Gear Type:	Hybrid
Rotation/Support:	Dual Bearings
Rotational Range:	(add)
Pulse Cycle:	(add)
Pulse Width:	(add)
Connector Type:	(add)

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The discontinued Airtronics 94739Z is a specialized 'Contest Proportional Retract' servo that is designed to provide reliable and powerful operation of retractable landing gear systems in high-performance aircraft. Unlike the non-proportional 94734Z, the 94739Z offers proportional control, allowing for the speed of the retracts to be controlled by the transmitter. This allows for even more realistic and scale-like operation of the landing gear. The servo's powerful 5-pole motor and durable gear train provide the torque needed to operate even the largest and heaviest retract units, ensuring that the landing gear cycles reliably every time. The servo's dual ball bearings on the output shaft provide a smooth and precise action, minimizing slop and ensuring that the retract mechanism operates smoothly and without binding.
The 94739Z is a purpose-built servo that is designed to excel at its specific task. Its proportional control allows for a level of realism that is not possible with a standard retract servo, making it the perfect choice for the most demanding scale modelers. The servo's robust construction and reliable performance have made it a trusted choice for competitive scale and pattern pilots who demand the best for their models. For those who are looking for a retract servo that can provide the ultimate in reliability, realism, and control, the Airtronics 94739Z is the perfect choice.