as oscillating steam engines are
the simplest of all model steam
engines to produce
for the novice model
engineer considering having a lack of the necessary machine
available to anyone new to this hobby. They come in many configurations
but mostly there are two types and these are covered in our offerings
of free wobbler steam engine plans.
that have an inlet and exhaust passing through the
same portway, or those where the inlet is at or near the top of the
with slots near the bottom of the cylinder to allow the spent steam to
atmosphere, that way making the construction easier to accomplish.
second is mainly used with single acting steam engines where
the power stroke is from one direction only as double acting steam
engines would need the
combined inlet and outlet at each end of the cylinder or a longer
piston assembly and a complicated crank arrangement.
varieties, but the simplest wobblers are
made as a flat sided tube with a
piston inside, with one end sealed and a single port drilled near the
top to allow the
gas transfer according to the position of the wobble. The cylinder is
pivoted along one side, midway along its piston movement inside the
cylinder, sitting flat on a face with the port sliding to and fro
with the wobble, opening
and closing the
inlet and exhaust passages
through the face the piston is pivoting on in turn
according to the crank position.
first-timers steam engines as they can be completed on a drill press,
or even without for very rudimentary models, although they do tend to
require high revs (according
to size of course) to produce any
servicable power in the smaller scales.
out the ones in the links on the left for a better idea.