Mighty Atom model airplane engine 1934

This little engine is considered by some to be one of the ten finest ignition engines ever made. Its design was commissioned in 1939 by the Polk Brothers (then and for years to come, one of the bigest names in model aviation supplies and promotion) and executed by Ray Arden (who would later father the glow plug). Manufactured by "Microdyne Engines" NY, the engine was unusual for it's small size at the time of its inception. A patent application for the design (#115974) was lodged on May 13, 1939. The original "Mighty Atom" contained several innovative features such as: front rotary intake from a fixed fuel jet combined with a variable air supply; bypass via a piston valve; ball and socket little end, and the nicest snap-action timer you've ever seen. All this at a weight equal to the coil it would need to run it!
Ray Arden mighty atom model airplane engine glow plug Microdyne Engines Bomberguy
