This model locomotive was scratch-built without castings at a scale of 3/8”:1’. It has two double-acting cylinders that have a 7/16” bore, and a piston stroke of 3/4”. Mr. Kouhoupt’s locomotive runs on G-scale, or Gauge 1 track (45 mm track gauge), and is alcohol fired. The train is on display along with dozens of Rudy’s scratch-built rail cars.

One of the first large donations to the Miniature Engineering Craftsmanship Museum was the collection of famed model engine builder Rudy Kouhoupt. After retiring as a chemist, Rudy had a second career building engines and writing magazine articles documenting the process. Many people have built his models, but we have the honor of displaying all of his original prototypes. Rudy’s collection includes scale model engines, locomotives, tractors and more. Additionally, thirteen of Rudy’s model steam engines are hooked up to run on compressed air to demonstrate their function. 

Exhibit added: November 16, 2023 - Last modified: February 5, 2024

Presented by The Joe Martin Foundation for Exceptional Craftsmanship