| 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.
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 minimizes any internal wear. Without the need for complex overhead poppet valves,
the 4-cycle RCV engine design has proved to be inherently reliable. | 
$245.00
