RCV - Rotary Cylinder Valve Four Stroke Engine

Engine Overview:-
The RCV - rotary cylinder valve four stroke engine represents a major advance in model engine design.
Although its moving components (piston, crank, cylinder and rotary valve) are totally conventional,
they are arranged in a radically novel configuration to provide the aero modeller with several key benefits,
whilst having similar handling characteristics to other 4-stroke model engines:-

Design Features:-
The engine still uses RCV's unique rotary valve system - which has only one extra moving component to a 2-stroke and so is easy to maintain. Its ultra low profile, means the height of this engine is approximately 18mm less (compared to OS & Magnum) & the highest point is 14 mm further back which makes cowling much easier than with other engines.

Observations:-
Based  on my limited my limited experience with this engine I have concluded that this engine is a candidate for an on-board ignition system to prevent low throttle engine flame outs and the inevitable dreaded dead stick landing that comes with it. A close look at the manufactures instructions reveals that he highly recommends using an OS type "F" glow plug with this engine: something that I intend to try before going through the expense of installing the on-board ignition system. I have a plan to try this engine in an old-timer Red Zephyr that I have mounted on floats. This plane is a joy to fly but with its present OS 40 2 stroke it could do better with the extra power of a bigger engine, like this RCV.    

Specification	Imperial	Metric
Manufacture	Die Cast
Engine Type	4-stroke - Glow ignition
Displacement	0.58 cu inch	9.5 cc
Max Power (approx.)	0.85 bhp	0.64 kw
Weight (exc. silencer)	17.6 oz	500 g
Length	4.01 inch	104 mm
Height - centre line axis	2.64 inch	67 mm
Cowling Radius		R70
Propeller shaft diameter	1/4" UNF
Practical RPM range @ prop	2,400 - 12,000 rpm
Example prop sizes (2-blade)	10x6, 11x6, 12x6, 13x6
Recommended Fuel	10% Nitro / 15% Oil including max 6% Castor

Bench Test:-
http://youtu.be/QxteLIj4sfs

In Flight Video:-

Main Components

How it Works
At the top end of the rotating cylinder there is a single port leading to the combustion chamber.  This is surrounded by a fixed timing ring with three radially arranged ports; inlet, ignition and exhaust.  This simple valve arrangement serves the combustion chamber as the engine cycles through the conventional 4-cycles: induction, compression, power and exhaust.  Ignition is achieved through a standard 4-cycle glow plug exposed once only during each complete cycle.The rotating cylinder is effectively combined with the rotary valve in a single component hence - RCV - Rotating Cylinder Valve.	CD Cross Section View

Users Manual