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Marklin 4105 6 1/2


This was my first Marklin engine. I'm not 100% sure about the model number but it appears to be a 4105 or something very similar. The badge is marked with "6 1/2" but this is a size designation (=boiler diameter in cm) rather than a model number. A small and simple engine, by Marklin standards.

The boiler is a vertical type with a single centre flue. It is 97 mm high x 65 mm diameter. It is fired with a dual wick meths burner, but I don't think the one that came with it is original. The boiler is fitted with a chimney, which is also not original, a safety valve, which looks too new to be original, and a whistle. The steam feed pipe exits from the side of the boiler very near the top.

The steam pipe goes directly to the rear of the port face of a single acting oscillating cylinder; 6 mm bore x 20 mm stroke. The crank shaft has a 73 mm diameter flywheel.

The whole sits on a cast base with square corners.

It is in pretty good condition, both mechanically and cosmetically. The paintwork and the boiler bluing appear to be original.

Make Marklin
Model 4105 size 6 1/2
Made c1920
Description Stationary steam engine
Cylinders 1
Cylinder Type single acting
Piston Diam mm 6
Stroke mm 20
Valve Type Oscillating cylinder
Boiler Type Vertical with centre flue
Fuel Meths
Mechanical Condition Good
Cosmetic Condition Good
Paintwork Original
Purchased 23/2/2016
Purchase cost 130
Additional cost