MOTOR WITH… A TABLET | MODEL CONSTRUCTION

Difficult situation with a model micro-motors in our country, and also difficult to explain, but very attractive the desire of some designers and modelers around the world to provide their phones in unconventional engines sometimes lead to very interesting results. The journal “modelist-Konstruktor” tries to acquaint its readers with all the latest developments in this area. Tan, we have repeatedly published materials on perspective, today received universal recognition engines running on liquefied carbon dioxide. Don’t we go around the topic of steam machines, which, however, mainly engaged in ship modelers.

Today we introduce the adherents of the “steamers” with a very nice design, sketches, which the editor sent from the city of Simferopol V. Abramov, Methodist Crimean obl syut.

He built a steam machine is easily reproducible in almost any conditions. Its advantage — no complex, requiring precision machining and Assembly of elements of the distribution of intake and exhaust of steam from the cavity of the working cylinder. The basic requirements to quality of production of knots of the engine— the ease of movement of all moving parts, no jamming and good adjustment of the piston n to the working surface of the cylinder.

Especially careful to treat the lapping of the friction planes is soldered to the cylinder plate and the frame in the area of the inlet and exhaust ports. Here you can recommend the solution proposed in the book “Technical creativity” (publishing house “Molodaya Gvardiya”, Moscow, 1956), where he published drawings and a description of exactly this design (only a bit smaller and runs on compressed air). There the cylinder was napisales not just a plate, and a wedge having two relatively narrow, spaced along the height of the belt friction. It provides not only the improvement of grinding and lower mechanical losses, but also higher quality clamp areas, performing the functions of the valve and under the influence of the vapor pressure (the more pressure, the stronger must be compressed friction parts).

Piston steam engine with an oscillating cylinder:

1 — pipe steam inlet (copper pipe, solder in the hole In the part 2; a similar pipe to solder in hole G steam release), 2 — the frame engine (steel sheet thickness 4 mm) 3 — M4 nut,4 — spring pressure plate 6 to the frame of the 2.5 — axis swing cylinder (steel wire diameter 4 mm threaded M4), 6 — plate (bronze, solder on the parts 16), 7 — flywheel, 8 — axis crank (steel wire 4 mm in diameter), 9 — bronze sleeve-bearing, 10 — crank pin (steel wire 4 mm in diameter, extruding the part 11), 11 — cheek of the crank (steel sheet thickness 5 mm, extruding and riveting on parts 8), 12 — plate of the balancer 13, the piston rod 14, the lower cylinder cover with the guide hole for the piston rod (perform four holes of 2 mm diameter for purging podpolnogo space), 15 — piston (fit to size of the inner cylinder, to perform two sealing grooves in accordance with the drawing) 16 — cylinder (metal tube 16×1 mm diameter 50 mm length), 17 — a blind upper cylinder cover (soldering in the part 16 after Assembly as item 14).

Below shows a prism mounted instead of plate in accordance with the recommendations of the book “Technical creativity”.

This steam engine can be installed on ship models in any position, convenient for layout. The torque transmission rubber belts or with gears; depending on this, behind the flywheel on the shaft is fixed a pulley or gear.

This steam motor works fine when powered from soldered tins-boiler, the heated tablets of dry alcohol. However, it is necessary to strictly observe safety rules applicable to the steam generating installations of medium pressure.

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