In 1946, the Thunderbird was advertised as the only miniature engine with a genuine supercharger, “just like the big ones!” Supercharging increases atmospheric pressure in the engine to produce more horsepower. The engine is 6”-long, 3”-wide, and 6”-high.
The ad described the engine as, “the perfect racing engine for airplanes, cars and boats.”
Scott Motors, Inc. was located at Sky Harbor Airport and manufactured the mini Thunderbirds in the 1940s. It was owned by John Connelly and Leland Hayward. Connelly ran the aircraft overhaul facility at the airport and Hayward had some connection with the airline industry. The company was named after Connelly’s son, Scott.