HOME Collection Burnac

Burnac Vulcan stationary engine


This engine is quite small, the height being 230mm with a 95mm diameter base.The base is a solid alloy casting, with "A Burnac Product made in England" cast into the bottom. The vertical boiler is 63mm diameter x approx 90mm. The barrel of the boiler extends down to form the firebox, so the position of the bottom of the boiler is not visible from outside. This gives a clean and uncluttered appearance

This example has a copper boiler barrel and firebox with brass ends. However, other examples have been seen with various combinations of copper, brass and steel.

The boiler is a single flue vertical type with the burner gasses exiting through the chimney (but not the steam exhaust). There is a safety valve on top of the boiler. The water gauge glass is of the "U" tube type behind an all-round brass protector.

Steam exits the top of the boiler through a union nut and via a short pipe to the engine block. The single acting oscillating cylinder is 8mm diameter x 14mm stroke. A screw exhaust throttle valve is built into the engine block.

The crankshaft is fixed horizontally to the firebox side. It has a disk crank at one end and a 47mm diameter flywheel on the other.

When acquired by me, the engine was dirty and somewhat corroded, and the paintwork was virtually nonexistent. There were just enough traces to determine it's original colouring, to which I restored it approximately. It had probably been dropped at some time because the firebox and engine frame were bent (see last photo opposite). Surprisingly, the water gauge was intact and everything that should move did so. The boiler rattles when shaken but I'm assuming that's the remains of the old safety valve spring.

Make Model Made Description Cylinders Cylinder Type
Burnac Vulcan c1946-49? Stationary 1 single acting
Piston Diameter mm Stroke mm Valve Type Boiler Type Fuel Mechanical Condition
8 14 Oscillating Cylinder Vertical Meths fair
Cosmetic Condition Paintwork Packaging Purchased Purchase cost Additional cost
restored restored
10/10/2010 51.09 5