BUILDING A MODEL CASE


| May/June 1974



Model ''D'' M M Shelter'

This picture shows us shelling corn with a Model ''D'' M M Shelter. Quite a few people came to see the little engine and sheller work. It did a beautiful job. We shelled about 750 bushes at about 200 bushel per hour. That is me standing by the engine. Cou

Grant A. Conboy

Route 1, Rock Falls, Illinois 61071

I am sending you some snapshots and a few lines about a one-half scale model Case 65 that I built. This engine is popular with model builders. Each time I see one in the Iron-Men Album I marvel at the finished product, for I know how much time and effort each person put into it. This goes for whatever make the builder uses for his model.

If one wants something bad enough and long enough he makes a way to get it. I always wanted a steam engine. It occurred to me if I built one myself it would not cost very much. The Case 65 is a well proportioned engine. It looked like it would be easy to build. It would be a one-half scale model.

The patterns were made from blueprints. To get the right contours and shapes to the castings, snapshots were taken at close range of everything on the full size Case 65. All parts were photographed several times from every angle possible. By using the dimensions from the blueprints and the pictures it was possible to form the patterns.

Making patterns and core boxes was new to me. If one part could not be made there would be no use going on. The cylinder with its ports would be the most difficult, as the steam ports had to be cored accurately. The cylinder block came from the foundry perfect for machining. The pattern for the engine frame was a bit of a problem, but, it too came from the foundry perfect. From then on the remaining patterns were fairly simple, although it did take a long time to make the pattern for the flywheel. The Cannon bearings, the wheel hubs, both front and rear, were cast from patterns. Everything cast on the engine is an exact duplicate of the full size engine.

Now about the boiler - I learned that a boiler has to be made by a licensed boiler maker in order to be state approved. About this time Iron-Men Album came out with a cover picture of Mr. A. C. Otto of Sandwich, Illinois, and his one-half scale model Case 65. This was in 1955. I went to see Mr. Otto but did not get the boiler at this time because I became involved with another project. Not until 1967 did I get Mr. Otto's boiler. It was a welded boiler built to exact scale and licensed for 150 pounds steam pressure.