Working model of V6 engine is fully made of paper (only pistons side surfaces covered with scotch tape). The model runs on compressed air.
Gas distributing mechanism scheme: https://drive.google.com/file/d/0B0xqQIZvwhdieTJHN1otdE5nb3M/view?usp=sharing
LxWxH: ~ 80 x 60 x 40 cm
Shafts diameter: 2 mm
Piston stroke: 10 mm
Cylinder diameter: 9 mm
"Swept volume": ~ 3817 mm3
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