The Starling P500 was made by Production Research of Minneapolis Indiana and used a 5 horse power Clinton engine.Produced from 1965 through 1968, it came as standard propeller or as a jet drive. The motor was red lined at 6,500 RPM but 5,000 RPM was recommended. I didn’t think much of the Clinton engine. It was just a noisy lawn mower in my book. Good Luck with it.
