HOME Collection Mamod

Mamod SP3 Meccano steam engine


When Mamod stopped making the Meccano engine for Meccano (to be sold under the Meccano name) they renumbered it SP3, updating it with a solid fuel burner, water sight glass and whistle. Thay also changed the colour to metalic silver-grey.

The boiler is a fairly standard Mamod one. It has a chrome plated cover extending right over the top of the boiler, possibly at Meccano's insistance for safety reasons. The boiler is 1 3/4" dia x 4 1/2" long. It has a standard Mamod 1/4" safety valve, a water level sight glass and a whistle, but no steam dome.

The engine is a single cylinder, single acting oscilating cylinder type with a reversing lever which operates by shifting the trunnion. The crank shaft and flywheel are almost standard Mamod except that the shaft diameter is Meccano standard 5/32". The crankshaft was fitted with a Meccano standard gear wheel and chain sprocket, but they are missing from this example. There is a pulley turned into the boss of the flywheel.

The whole thing is riveted together, which would make restoration a bind. Fortunately, it is in reasonably good condition so I've left it as is.

Make Model Made Description Cylinders Cylinder Type
Mamod SP3 1979-84 Engine for Meccano 1 Single acting reversible
Bore mm Stroke mm Valve Type Boiler Type Fuel Mechanical Condition
8 20 Oscillating Cylinder (reversible) Horizontal Solid fuel tablets Good
Cosmetic Condition Paintwork Packaging Purchased Purchase cost Additional cost
Fair Original but damaged
? ?