RCV 60 £169.99 RCV 90 £199.99 RCV 120 £249.99

You can find much on site information on engine theory here.

How it Works

RCV Engines is the worlds largest manufacturer of rotating cylinder valve internal combustion engines. Their unique worldwide patented technology has been awarded the prestigious Millennium 2000 status by the United Kingdom Design Council.

The RCV 4-cycle engine has only one more moving component than a 2-cycle engine - the rotating cylinder itself. The cylinder is suspended between two bearings allowing it to rotate freely around the piston; the piston and crank are entirely conventional. A gear formed around the base of the cylinder meshes with a 2:1 reduction gear on the crank. As the piston reciprocates and the crank turns, the cylinder rotates around the piston at half engine speed.

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.

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.  A shaft attached to the cylinder rotates at half engine speed producing high torque and facilitating use of larger and quieter scale propellers.

Use of modern materials and the beneficial honing action between the piston and rotating cylinder minimises any internal wear. With no complex overhead poppet valves, the 4-cycle RCV engine design has proved to be inherently reliable.

All RCV engines have the following features:

• Streamlined Shape. The rotating cylinder is in-line with the axis of rotation of the propeller, producing an extremely streamlined shape and small footprint. The RCV fits within most small diameter cowlings.
• Behind Propellor Starting. The engine may be started from behind the propeller using a hand-held electric starter inserted directly into a socket located on the end of the crankshaft. This enables the operator to remain safely behind the prop at all times.
• 2:1 Output Gearing. Enabling the use of larger, quieter and more efficient scale propellers.
• Radially Mounted. No need for nylon engine bearers. Easy and accurate thrust line adjustment.
• Ease of Operation. The quality CNC machined RCV60-SP starts readily and is easy to tune.
• Low Maintenance. Few parts mean built in reliability. No complex valves and rockers to seize. Cleaning and reassembly is straightforward.
• International Guarantee via RCV. Manufactured to quality standard ISO 9000 all new engines are covered by a comprehensive 2 year international warranty.
• Choosing the right engine. RCV 4-cycle engines are direct equivalent of conventional 4-cycle engines. Just use the engine size as recommended by your model kit manufacturer.

Breakdown of main components

Use of modern materials and the beneficial honing action between the piston and rotating cylinder minimises any internal wear.  With no complex overhead poppet valves, the 4-cycle RCV engine design has proved to be inherently reliable.

Dimensions

Specifications

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