4 inch scale replica of the Robinson hot air engine. The original engines were normally coal-fired and used for pumping and light machine duties. This is a well-made engine in good running order. The displacer is water-cooled by an integral tank under the power cylinder.
Power cylinder 1 3/8 bore x 1 inch stroke
Displacer 2 1/4 bore x 7/8 inch stroke
Flywheel 4 1/2 inch diameter
Overall height 7 1/2 inches
