Nash gas engine


| July/August 1974


Highlard Drive, P.O. 246, Elfers, Florida 33531

First Two pictures are of the Nash model and the third picture is the 'Novelty' that I built.

With reference to the Nash gas engine shown on the Nov.-Dec. 1973 issue of G.E.M. I would say that I have a book, 'Gas, Gasoline & Oil Engines' dated 1898 in which the Nash engines are fully described. The smaller sizes, such as shown in G.E.M. are two cycle engines, the gas/air mixture being admitted to the crankcase through a port in the cylinder wall opened and closed by the lower edge of the piston as in a modern three port engine.

The unusual feature is that the charge was transferred to the combustion chamber by means of a cam and push rod operated valve. The exhaust was three ports in the lower end of cylinder in the usual way. In an effort to obtain more even running at idling speeds, many years ago, I designed and built an engine on a similar principle with the idea that the gas mixture would be close to the spark plug, thus assuring ignition even at low throttle.



I afterwards found that Nash engines embodied this feature 75 years ago! [See photos of this engine].

Also - photo of a two cycle engine which I built from castings supplied by the Novelty Mfg. Co. of Cincinnati, Ohio in 1912. This engine originally had a spoked flywheel and a 'wipe' contact and buzz coil, but during W.W. 2, I made some changes; fitting a Bosch magneto and added counterweights to the crankshaft. My son used to ride to work on a scooter fitted with this engine.














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