The Type B "Modified" Loyal Cycle Engine

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What is a "Loyal cycle" engine?

This is a unique engine that runs on an unusual cycle from the 1870’s. Called the "Loyal cycle", it operates as a 2-stroke engine with exhaust, intake, compression & expansion in one cylinder with no valves & an open crankcase. It differs from a regular 2-stroke in that there is no external "charging or purging" of the cylinder & it’s also somewhat of an Atkinson cycle engine in that its expansion stroke is longer than the intake. It has no gears, cams or pushrods & can run either direction without changing anything. It’s either hit & miss (by ignition) or can be run as a throttler. (Controlled by changing ignition timing, fuel or restricting the exhaust.)

Casting kits available;

*Fine-grain, ductile-iron castings,

*7/8” bore x 1-1/8” stroke, 5-3/4" diameter flywheel & 10-1/2” tall,

*Speeds from 150 to 3000 rpm,

*Detailed nameplate with individual stamped engine serial #,

*IT’S A HEMI

Above: The RMC "type B" Loyal cycle

-Casting kits for the the modified Loyal engine are $170 each + $10.95 (flat rate) shipping to anywhere in the US. Casting kits include full machining plans & a CD filled with pictures of machining setups, finished parts & engines. There's also extra literature on the original Loyal cycle engines. *These are fairly simple engines but still require at least a small lathe & mill to machine.

-Very few, if any, finished & running engines will be available at any time. (E-mail rowland@willard-oh.com for more information)

-Wooden "RMC" logo show boxes are also available at certain times. (see pic below)

rowland@willard-oh.com