E-Sky EK2-0505 - Helicopter Servo

Specifications

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

Last Updated:	2025-08-06
Modulation:	Analog
Torque:	4.8V: 18.05 oz-in (1.30 kg-cm)
Speed:	4.8V: 0.12 sec/60°
Weight:	0.28 oz (8.0 g)
Dimensions:	Length:0.90 in (22.9 mm) Width:0.45 in (11.4 mm) Height:0.82 in (20.8 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 E-Sky EK2-0505 is a specialized, fast micro servo, most famously used as the tail rotor servo on many of E-Sky's fixed-pitch helicopters like the Honey Bee FP. Unlike the standard cyclic servos, the EK2-0505 is designed for higher speed to work in conjunction with the helicopter's heading-hold gyro. Its purpose is to make the rapid adjustments needed to counteract the main rotor's torque and keep the tail stable. As an OEM part, it is perfectly tuned to the response of the E-Sky gyro and electronics, providing the best possible tail performance for these classic beginner helicopters.
The defining characteristic of the EK2-0505 is its role as a high-speed tail specialist within the E-Sky system. For a beginner learning to fly a fixed-pitch helicopter, a stable tail is absolutely critical for success. The EK2-0505 provides the speed necessary for the gyro to do its job effectively, resulting in a more predictable and easier-to-control helicopter. For owners of these models, it is the essential component for maintaining proper tail authority and achieving stable flight.
While specialized, the EK2-0505's speed makes it an interesting component for robotics. It is a very low-cost way to get a high-speed micro servo. It would be a great actuator for any project that requires a quick, repetitive motion, such as a small sorting mechanism or a rapid triggering device. It offers a unique performance characteristic at a price point that is hard to beat."