McCulloch TSIR-5190

The TSIR-5190 is a five cylinder two-stroke radial piston aircraft engine developed for aircraft applications by McCulloch Motors Corporation.

Joe Crover and his father patented new technologies to complete development of the engine for production use. A pair of TRAD-4180s four cylinder diesels and a single TSIR-5190 from the Western Museum of Flight are in use for development.