ADVANCE MODEL


| November/December 1972


Moscow, Idaho 83843.

A one-inch scale model of the Advance traction engine, which I have been building in spare time for some three years.

The model is 'scratch-built,' except for the cylinder, governor and hand valves. The boiler was rolled and flanged from sheet copper, and silver alloy brazed. It has a diameter of 3 1/8 inches and is 16 inches long (corresponding to the 38-inch by 16 foot dimensions of the prototype). The rear wheels are 6 inches in diameter, and each is composed of 97 separate parts, brazed and soldered together. The front wheels and flywheel (also built-up) are 4 inches in diameter. The bore is 7/8-inch and the stroke 1-1/8.

My dimensions were arrived at from information in the 1912 Advance catalog and from examining and measuring three engines that are parts of collections in the area around Moscow. It is scaled-down 30 HP, which I suppose will develop about three kitten-power.



To give credit where it is due, I should say that supplies and fittings were obtained mostly from Cole's Power Models, Ventura, California, and Charles V. Arnold, Junction City, Oregon.

I would also like to extend my greetings and best wishes to all good steam men (is there any other kind?); particularly to Joe Fahnestockas one who has also derived great benefit from the Cayce information.














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