| Sideshaft
Vacuum Engine
Plans |
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These
are
also known by some as "Fire
Eaters" or "Flame Suckers" but
technically, they are
"Atmospheric" engines.
My unique valve mechanism
operates from an oscillating
side shaft. The
engine is shown powered by one
of my Mini Propane Burners (a
separate
plans set) at the front of the
engine. You can run yours with
an
alcohol lamp if you like. A
belt driven fan provides some
air cooling,
it also adds considerable
interest to the engine. There
is no ignition
or carburetor to cause
problems. The engine can
operate from 200 RPM up
to 3,000 RPM or more! As
hot-air engines - not stirling
cycle - they
are unusual in that they make
a popping sound not unlike an
internal
combustion engine.
I built this engine 25 years
ago. It is easy to build, but
it is small
and has some small parts in
it. For a larger more refined
"atmospheric"
engine, see the "4-in-1"
Vacuum Engine below.
The plans set consists of 4
sheets of drawings and 1 sheet
of
construction and assembly
notes.
Specifications:
Flywheel Diameter: 2-3/8",
Cylinder Bore: .610", Piston
Stroke: 7/8",
Overall Length: 4-1/2" Experience
Level: 1
Materials
Set:
(1) Graphite rod to make
piston, (2) 3/16" ID x
3/8" OD x 1/8" thick
precision ball
bearings. Materials
set
sold separately.
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"Thanks
for the great tips
on your web site. I
have ordered plans
from you in
the past, great
quality, prices more
than reasonable.
Keep up the good
work." - Mike
Nay (West Valley
City, Utah)
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