Near the base camp in the district of Tsugaru passes along with the tourists, I have built mini-hydroelectric power plant with a capacity of 15 W and voltage 220 V. This is sufficient for night camp lighting energy-saving lamps or LEDs. Day also can charge batteries of cameras and camcorders that can connect a radio or tape recorder.
Mini-hydro — damless type. Scale rotor blades — 1700 mm, width 800 mm, height -250 mm blades rotational speed of 14-16 rpm. The multiplier transmitting rotation from the rotor to the generator (tractor DT-54) — three-stage V-belt transmission with a total gear ratio i = 130. 220×8 transformer In a power of 250 watts.
A. POPKOV, item Psebay-1, Krasnodar Krai
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To lengthen the crib grown daughters, made a back flip. It turned out — a double benefit: in the daytime daughter is using her piece as a table for drawing, sculpting. V. SADAKO, Donetsk
RIVER BOAT
This model can successfully build students 4-5 classes. Best to start with the housings. It can be done chiselling from a block of wood or stacked. If the housing is stacked, panel it...
