This is Fred Weinberg from Detroit.

-He is credited with manufacturing a special two-cylinder engine and a 9-cylinder, 350 HP rotary radial engine, without further details.

-As a radial engine, it had some differences, which we translate below:

-“It is actually a two-stroke engine because the fuel-air mixture enters through the lower ports, aided by the centrifugal force of the rotation.

-The ports are uncovered by the piston when it reaches bottom dead center (BDC).

-Meanwhile, a driven exhaust valve is located in the cylinder head.

-This valve is quite large, approximately two-thirds the diameter of the cylinder head.

-Ignition occurs simultaneously in both cylinders.”

-Manufacturing took place at the Michigan Co. factory.