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Cyldon 13/3 stationary engine

c1940's








The 13/3 is similar to the 13/1 but with a metal base instead of wood. Both are simple oscillating cylinder models - very conventional in style. Typical of Cyldon, all major parts are made from non-ferrous materials - brass, aluminium, copper and mazac; the only exceptions being small parts like screws, springs etc. The only painted part is the mazac flywheel.

The brass boiler is 1 3/4" diameter x 4 5/16" long. It is fired by a brass cylindrical three wick meths burner. This was missing but I have fitted a new reproduction. It has a safety valve and a separate filler plug and overflow plug. It has a dummy chimney, which was missing but has been replaced by an almost identical Mamod one. The boiler is held onto the aluminium firebox with a single brass band (this being original despite the appearance that there should be two).The copper steam pipe exits from the bottom of the boiler inside the firebox, thus getting a very small degree of superheat.

The steam is fed directly to the back of the port face of the oscillating cylinder. The brass cylinder is 5/16" bore x 3/4" stroke. It is a single acting oscillating type. The crank shaft is one of the few steel parts, with a brass disk crank at one end, a small pulley at the other and mazac flywheel in the centre. The simple brass engine bracket is fixed to the aluminium base plate; which has a rubber foot at each corner.

The bottom photo shows on the left shows the engine as I got it; in poor condition, with missing chimney and with a non-original burner. I have fitted a chimney from a Mamod SE series engine which just happens to be identical shape and size. The mounting method is different in that the Mamod chimney is screwed directly to the boiler whereas the original Cyldon chimney clipped onto a small bracket fixed to the boiler. The metalwork has been cleaned up (but not highly polished). Most of the paint on the flywheel came off during cleaning so I repainted it.

Make Model Made Description Cylinders Cylinder Type
Cyldon 13/3 mid-late 1940s Stationary 1 single acting
Piston Diam mm Stroke mm Valve Type Boiler Type Fuel Mechanical Condition
8 19 Oscillating cylinder horizontal Meths Good
Cosmetic Condition Paintwork Packaging Purchased Purchase cost Additional cost
Fair Restored
14/6/2011 32.00