Mirror polished and nickelplated boiler, diameter 45 mm, length 105 mm, boiler capacity 155 cm³, with water gauge glass, spring loaded safety valve, steam jet oiler. Vertically mounted reversible double action brass cylinder, with flywheel, flexible plastic pipe to connect boiler and engine assembly. Flywheel with a diameter of 70 mm with grooved pulley, stern tube with a diameter of 6 mm and shaft (length 260 mm), plastic propeller, diameter 50 mm. Brass universal coupling. Operating time about 15 minutes per fuel charge.