MWfly SPIRIT SKY LINE non-cerified Aeronautic Engines are 4-cylinder horizontally opposed (boxer type) liquid cooled motors manufactured to the highest standards to meet application requirements in a wide range of LSA and experimental single-engine or twin-engine airplanes and other aircraft (STOL, helicopters, gyrocopters, hang gliders, seaplanes and drones). These engines have been designed for long-distance touring use and can be supplied with clockwise or anticlockwise rotation, both in tractor and pushing configurations. Rotation is designated by the letters "R" or "L" at the engine model code. The rotation must be specified at the time of ordering. Their large displacement, combined with the high torque values obtained at low rpm, guarantees great flight comfort and low fuel consumption.

SPIRIT SKY LINE engine models are offered with direct or geared drive transmissions (depending on the model) and deliver 100, 122, 135 & 140 HP. Other features include:

Run on unleaded petrol,

Water cooling,

Double electronic injection,

Gearbox with separate lubrication,

Integrated hydraulic governor (optional),

Overhead camshaft (S.O.H.C.),

CAN aerospace data line,

Compliance with ASTM certification,

High power / weight ratio,

Simplicity of installation.

MWfly SPIRIT SKY LINE and RED LINE engines come with many accessories as standard while additional engine accessories (sold separately) are also available (please refer to the Product Details section).

STANDARD ENGINE ACCESSORIES:

- Full redundancy ECU’s

- Full installed engine wiring loom

- Internal generator

- Voltage regulator

- Start relay

- Installed inductive coil

- Installed cooling circuit expansion tank

- Installed cooling circuit thermostat

- Engine mount dampers (8)

- Fuse & relay (electrical hub)

- Capacitor

ADDITIONAL ENGINE ACCESSORIES (sold separately). Please refer to the respectve presentation of MWfly SPIRIT engine accessories:

- Standard coolant radiator kit

- Front coolant radiators for STOL (2)

- Oil radiator kit

- Fuel pumps & filters module (2+2)

- Standard exhaust system

- EMS & sensor kit

- CAN aerospace interface

- Bed mounting adaptors (4)

- Engine-cockpit wiring loom

- Hydraulic VPP (constant speed) for SPIRIT Geared models  122, 135, 140 and 160 

- Aux generator for SPIRIT Geared models  122, 135, 140 and 160 

For additional information please refer to the attached brief presentation of MWfly engines, the engine comparison chart  or contact us for customized solutions to your projects.