The Bailey Aviation V3-180 Engine Description
The Bailey Aviation V3-180 is an aviation engine designed to power ultra-light aircraft, hang gliders, paramotors, trikes and any other aircraft that requires an auxiliary power unit. As the first and only dedicated small capacity 4stroke aviation engine, it is ideally suited for use in lightweight solo applications, due to its exceptional fuel consumption, low noise, reliability and flexibility.
The engine is an air-cooled 4-stroke single cylinder SOHC unit, designed and manufactured in the UK by Bailey Aviation, with a capacity of 180cc, producing 18HP at 8000rpm. The engine is smooth and linear in its power progression, offering much improved NVH (noise, vibration, harshness levels) levels over a similar 2-stroke counterpart. The engine was designed from the outset to be used in either pull (traction) or push conditions, offering high versatility in its mounting and operation.
The Bailey 4stroke has bespoke CNC machined 6082-T6 alloy crankcases, with integral reduction drive support and four widely spaced engine mounts to reduce torque affect and offer maximum engine support. There is a single engine breather from the cam cover that must be vented to atmosphere.
The SOHC design features adjustable rocker arms and the high lift camshaft also drives the integral high-flow oil pump with strainer. The integral oil sump has a capacity of 500cc (500ml) and has been designed to allow inclination of ± 20 degrees from the vertical plane, with no affect on engine performance.
Reduction is by lightweight 6082-T6 pulleys (black anodised), featuring a Poly-V belt system with integral eccentric adjustment for belt tension. A number of different reduction drive ratios are available, to match alternative propellers designs and sizes. The main drive pulley is drilled for two popular propeller mounting PCD’s (Pitch Circle Diameter), 6 x M8x75mm and 4 x M8x63.50mm and is supplied with neoprene mounting gaskets and a suitable alloy clamp plate. Alternatively, we now also offer a quick release propeller system, see here.
A gravity-fed, pulse type mechanical fuel pump is used, with integral one way valve which is mated to a very small and neat fuel primer bulb to prime the fuel system. The pressure-compensating carburettor is a float bowl design and has been chosen as it offers un-paralleled AFR (Air-Fuel Ratio), which is optimised all the way from Idle (3000 RPM) to its maximum continuous revs (8000 RPM).
The high-powered Capacitive Discharge Ignition (CDI) system utilises an electronic flywheel magneto and alternator (with 8amp output) offering in-flight charging of attached 12v batteries. The robust starter motor is powered by a separate starter solenoid and our shielded wiring harness contains all the connections required to run to dedicated start and stop buttons, via a master switch.
All V3-180 engines are fitted with our Forced Air Cooling System , which is manufactured from carbon fibre. The Forced Air Cooling System is a shroud that fits around the engine mount side of the power unit and utilises a lightweight, high air-flow fan that is crankshaft driven to provide additional cooling over the cylinder head, reducing CHT temperatures.