Opposed-piston engines were mainly built in the 30- 50s. The British Deltic and the Junkers aircraft engines were particularly interesting constructions.

Newer designs are OPOC, Goole, Pinnacle, Achates Power, Laukötter among others. Almost all engines were, or are, two-stroke diesel engines.

The presented model engine is a four-stroke engine with two cylinders and crankshafts which are connected by a toothed belt. The pistons run opposite to each other and therefore run smoothly.

Thanks to hardened pistons and cylinder liners the engine needs little lubrication; lighter gas is used as fuel and therefore the engine is almost free of exhaust gases. The piezoelectric ignition is driven by the camshaft or flywheel shaft. Starting takes place by rotation of the flywheel.

The engine consists largely of anodized aluminium and nickel-plated brass.



The model engine comes complete and ready to run. Gas is not supplied but it can run off any butane or propane source. Click here for a supplier of butane in the uk.
Technical data:

Speed regulation:	valve on the gas tank
Crankshaft:	2 ball bearings
Capacity:	1.5 CC (twice)
Number of revolutions:	300 - 1500 rpm (approx)
Height:	180 mm
Width:	230 mm
Length:	140 mm
Weight:	3.4 kg - with tank and baseplate
Running time:	approx. 10 min per standard gas refill
Flywheel diameter:	approx. 123 mm
Ignition:	Piezo crystal (no batteries required)

 Download the manual