Based in Alameda, CA., engine builder Stanley V. Hiller made several models of aviation engines. (see Hiller-Kelsey-Binger and HKB).

-The engine he made in 1910 is of an unknown type. In 1911 he made a 2-stroke rotary radial with 6 cylinders that gave 30 hp.

-In 1912, he designed another six-cylinder radial rotary but with 60 hp. This engine was built by C.R. Kelsey of San Francisco.

-In 1913, a 90 hp engine has also remained as an unknown type.

-This company in Alameda, California made the rotary engines we show below.

“Three Hiller engine views”