Hot Tube Ignition Follow-Up


| June/July 1990

  • Cylinder water jacket


  • Cylinder water jacket

115 C Audino Lane, Rochester, New York 14624

I am writing this as a follow-up to my article concerning hot tube ignition that appeared in the October 1989 GEM. I would like to thank everyone who wrote or called me concerning this article.

I received a very good letter from Mr. Henry Boutillette of Sussex, New Jersey, and I would like to share some very interesting comments and observations of his. He had a similar setup, as I described, for his 5 HP Bovaird and Seyfang engine, but when the engine drew in a charge, it would starve the hot tube torch, causing it to go out (a problem which I experienced, and never really fixed!). His first setup did not have an accumulator (or 'expansion chamber', as I mistakenly called it). His final solution was to 'chuck the accumulator', install a modified tee at the propane tank, and fit two pressure regulators, one to each remaining end of the tee. This supplies both the engine mixer and the hot tube burner from separate supplies that don't interfere with each other. I haven't tried this setup, but I'm sure that it fixes many problems with my setup.

Mr. Boutillette goes on to describe some other particulars of his setup. He used a #60 drill for his burner gas orifice, a ?' x 3' hot tube, and the center of his burner is 1? from the top of the cylinder head. His burner has two slots for air holes, and the gas orifice is 1/8' beyond the engine edge of the slot.



Again, I would like to thank Mr. Boutillette for his input.

My present project involves a hot tube engine, only this engine has a gasoline carb and burner. The engine was made by J.H. Mallinson of Utica, New York. I was told by the person I got it from (Pete Guydesen, of Lyons Falls, New York) that he got it from a man whose grandfather bought it. It was used on the farm until electricity came in 1906! After that it was used on an ice saw, the remains of which are still with it. The patent date on the brass Lunkenheimer carb is December 31, 1889. Hike to say it was made in 1895. It used to have a tag, but that disappeared. The only ID is the words, 'J.H. Mallinson Utica, New York', cast into the crankcase access cover. If anyone has a similar engine, or knows anything about it, please contact me. 



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