REFLECTIONS

A Brief Word


| December/January 1994



Mietz & Weiss Engines

29/12/1A

Wilfred Mole

With this issue, GEM closes out its 29th year. As one of those charter subscribers back in 1966, we hoped that our hobby would enjoy at least a brief moment in history. How could anyone have predicted what would eventually happen? Today, the engine and tractor hobby has grown beyond every expectation. What's even better, there are many thousands of folks who have no great interest in collecting and rebuilding engines, but they do have a great interest in attending a few of the annual shows.

Thus, we once again renew a point made previously. That point is this: As long as we keep the younger people interested and inspired by our hobby it will continue to grow. Whenever we thwart that enthusiasm, it will start to wither. Congratulations to those numerous FFA groups and others who have set about restoring a tractor or two as a project! And thanks to the many collectors who are willing to lend a hand to a kid, whether 16 or 60, who doesn't know how to hook up a coil or set a decent blade!

In this issue we're including an engine data sheet from 1926 for the Fairbanks-Morse Type Z engines. There are great numbers of these engines, and we thought perhaps some of our readers might find something interesting in this compilation.

There are a lot of queries this month, so we begin with:

29/12/1 Mietz & Weiss Query Q. A fellow member of the South African Vintage Tractor & Engine Club has located an interesting stationary engine. It is a Mietz & Weiss hot bulb engine. We are advised that it is a two-stroke engine that runs on kerosene and has a steam injection system into the combustion chamber. Unfortunately the steam injection system parts are missing. We would very much like to receive further information on this engine and how it works. Wilfred Mole, PO Box 408, Halfway House, 1685, South Africa.

A. The Mietz & Weiss engines were developed about 1893 at New York. Steam from the water jacket was piped to the air intake in an effort to reduce pre ignition. This concept was continued by oil engine builders until Fairbanks-Morse built their first 'dry' engine about 1915. The steam also had the effect of washing the cylinder walls and this resulted in excessive cylinder, piston, and ring wear. Perhaps someone owning a Mietz & Weiss engine might be of assistance in regard to the operating details.