Bob Matthews & I built 3 of these
models during the Winter of 2005 - 2006, spending approximately 700
hours total. That includes building the bases from our home-sawn cherry
wood and the cover boxes from 1/2" plywood. Although this project had
it challenges, we had definitely learned from the Vaughn project. This
one is close enough "to print" that almost any part could be replaced
by another made to the drawings, with a minimum of filing and
The engines are built from casting kits from Debolt Machine, Inc. out
of Zanesville, Ohio. Debolt can be contacted at 740-454-8082 (sorry, no
web page at this writing). They make some of the finest casting kits in
the business and are very easy to work with.
The engine is a bit unusual: It's Hit & Miss governed, with a
ratcheting cam instead of gears, inertia governor, ignitor
ignition, fuel tank in base with a fuel pump. All of these features
make for an engine that is very attractive, even to those who don't
know the difference between a steam and a gas engine. It starts very
easily and will sit there and run all day long. Our Vaughn model, also
from Debolt, is the same way, and is a very nice feature of Debolt's
models. All too often, we've observed models at shows that the owner
starts only when someone is looking at them seriously. his model is
quite large, being nearly 23" high, with 12" flywheels. The model, in
its box, weighs well over 100#.
Unfortunately, we took no In Progress pictures.
Here's a view from the Left front
From the Front, straight on
From the Right, front side
Closeup of the governor and cam
Closeup of the ignitor
With its transportation box installed
Some points of interest: We use Camp Stove fuel, such as Coleman or the
Wal-Mart equivelant, with 2-stroke engine oil mixed in at a 100:1
ratio. Lubricating oil is Mobil 1, 10W-30 synthetic. We try to adjust
the cylinder oilers so they last about 2 hours or a bit less. Ignition
is by a 12 volt rechargable battery that lasts about forever if it's
only running this engine. The ignitor has a Blockout or "spark saver"
that prevents operation except when a spark is actually required. The
Vaughn operates the ignitor every other revolution, even when it's in
the "miss" cycle.
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