After finishing the Heinrici engine in the gamma type version, the beta type
was still left to be built. The original engine was built in eigth different
sizes in Zwickau by Louis Heinrici about 1910. Today you can still find them in
museums and at model exhibitions. I found this engine in the exhibition of the
Heinrichshütte in Wurzbach. I took of the engines dimensions from the smallest
original version and reduced them scaled 1:3 (it can't be helped if one only has
small machines ..). The base of this model is made from bent and hard-soldered
plates instead of cast iron. The cylinder is made from a small shock absorber,
the piston consists of graphite, which makes the displacer piston rod run very
smoothly. Both cylinders consist of one piece. A rectangel cooling jacket
surrounds its upper part and makes possible an evaporative water cooling. The
flywheels are soldered, consisting of hub, stokes and outer rings. Typical for
the Heinrici engine is the special control mechanism of the displacer piston.