Updated: 09-Mar-2017
Engine builder known as "Cleveland Aero Motor Co." OH.
-Walter Willard builds the "4" model engine in 1917. An air-cooled, 6-cylinder radial with 707 cu. in. of displacement giving 140/150 hp.
-It is a "barrel" type engine, but unlike what has been seen so far. It does not have an inclined plate but a series of planetary gears driven by individual crankshafts for each cylinder.
“Cleveland”
-As it has the planetary system of the same size, the reduction is done exactly in the middle. It has four valves per cylinder, two intake valves and two exhaust valves.
-They planned a range from 100 hp to 600 hp. The shown diagram belongs to model 4 that gave 150 hp.
Engines of CLEVELAND AERO MOTOR Co
Model: Model 4, 6 cils, barril, 150 HP
"Cleveland - barrel engine"