Hot Tube Ignition Follow-Up
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
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.