Zip Eaton A Star Of Broadway

Zip Eaton

Content Tools

Zip Eaton, retired jeweler who has one of the best equipped and maintained home workshops we've ever seen, is a star of Broad way he lives at 1605 Broadway, Helena, Montana.

His latest achievement is the construction of a two inch scale working model of a 65 HP 1915 Case steam traction engine, which can serve as an example to others who would undertake a similar venture.

Zip, who is a reader of IMA as well as Home Shop Machinist, earlier built a small steam engine that ran on compressed air, as well as hit and miss gas engines, and a four-cylinder gasoline engine from castings bought from Coles. He did the machining himself.

'I remember the J. I. Case as a kid,' he told us. 'My father was a grain buyer and had done some threshing when he was a kid. He was a personal friend of the chief of the board and the CEO of J. I. Case Company.

'I bought the castings and plans from Coles. I made a lot of wheels and made the spokes for the wheels with reverse castings. I made the governor myself. The castings are for the main parts but everything had to be aligned and honed and reamed. I had the small gauges.

'It took 1,000 to 1,200 hours. I enjoyed it so much it didn't make a lot of difference.

'My granddaughter, Chris Purcell, of Helena, is the artistic type, very exacting, and she painted it. She's a Montana State College student at Bozeman.

'It runs like a top. Everybody is amazed. I've shown it in motion to children, and to friends such as Al Brown and John Baucus and other people. When I fired it up I just had to tighten the clutch a little.

'It weighs 150 pounds with water in it. Bill Bradford gave me invaluable help in figuring the horsepower. He said you use PLANPressure, Length of stroke, Area of piston and Number of revolutions; you multiply them and divide by 33,000. That comes to 3 HP, a lot for so small an engine.'

Zip became an IMA reader when given a subscription by John Baucus, our cousin by marriage. We had lunch with Zip, Al Brown and John Baucus while visiting the Baucuses in Helena. Zip's workshop is about as complete as a home workshop can be, and he's a very good house keeper.