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Four Cylinder Axial Piston Gas Engine

The four cylinder axial piston gas engine with “tumbling spider” engine is based on the model of aeroplane engines tested in the 1930s and 1940s. These engines were of interest because they took up less front space than radial engines.

The piezo high voltage ignition system built into the base is propelled by a drive belt from the engine shaft. The ignition, or rather, ignition point is controlled by a central distributor. Gas and rotation speed control is achieved via a valve on the gas tank with pressure gauge. 2 sprockets fasten the tumbling spider. Ball and socket joints connect the tumbling spider and pistons.

The elegant motion sequence of four cylinders is especially accentuated by the open construction design. The counter-rotating parts – tumbling spider, pistons, crosshead and push rods – present an intriguing mechanical interplay while operating. The engine runs at a pleasantly deep pitch.

Would you like to buy the engine?
Place your order by e-mail:
assembly instructions and technical drawings (PDF)
the price includes the VAT
kit out of stock
ready to use complete engine € 1,150
model four cylinder axial piston gas engine MM-6
rotation speed control via valve on the gas tank
tumbling spider 4-fold ball bearing mounted
cylinder capacity four times 1.5 cm³
rotation speed 200–1,000 rpm
running time 10 min/tankful (idling mixture)
flywheel diameter 123 mm
ignition piezo high voltage ignition
height × width × length 240 mm × 180 mm × 280 mm
weight 3,200 g (with tank and mounting plate)