“LIGHTNING” FROM THE BATTERY

Most of the photographers prefer flashes with battery. Such pulsed lamps serial production get a charge from the battery “Molniya” or the inverter low voltage dry cells in the high. But “Lightning” is rarely for sale and is kept short. Batteries do not save enough — the kit is barely enough to shoot two narrow films. So we have Willy-nilly “attached” to a wall outlet.

GOAL – ZENIT

GOAL - ZENITToday we want to introduce readers passionate about rocket modeling, with interesting design, developed and applied with success in competitions Czechoslovak athlete Joseph Rihoy. In 1983, the model helped him to achieve high results: in the championship of Czechoslovakia, he was a silver medalist, to become the first it was allowed only an unfortunate accident — the parachute didn’t open in the last round, it happened because of moisture on the dome at the last landing in the wet grass. It should be noted that the champion of the competition used the model of such a scheme.

Read more

MINI-MOKIK: SCHOOL OF DESIGN

MINI-MOKIK: SCHOOL OF DESIGN

Small cars and motorcycles always aroused great interest among Amateur designers. This is understandable: a vehicle having a small size and weight, low fuel consumption, well fit into the traffic flow of city streets, convenient to maintain and repair and durable enough, can not to attract attention, and, of course, primarily a teenager.

VOSKHOD-SNOWMOBILE

The idea of Snowmobiling came to me as soon as I moved to live in the village Belushi Nenets Autonomous district. A large part of the year it’s winter here. And in honor of such a transport which can carry people and cargo on the road. Snowmobiling I decided to make a bike “Voskhod-3”, which was bought in the summer to use it for its intended purpose. Therefore, in the design of the bike changed only suspension.

Read more

“SWALLOW’S TAIL” AND OTHERS

Connection of wooden panels with various kinds of spikes with the twofold goal. First of all, getting hard articulation of the various parts of the structure, such as parts, shelves, drawers, or walls, the sidewalls of the bed frame or sofa and similar items of furniture. The second equally important task is to improve the mechanical properties of flat wooden parts: correct connection can prevent a warpage, curvature of the product.

FOR THE BEST EXAMPLES

BEST EXAMPLESTo design a proposed “bouzouki” we came after a careful viewing of many descriptions and schemes of modern models class F2D. Reasoning that the current “fashion” for rough terrain foam machines is justified, decided to retreat and in General repeating the technique of elite athletes. As a result of the sketches turned out to be a promising model, the construction of which is possible with minimum consumption of balsa. We managed to get rid of complex operations on internal relief foam brackets: with fuzzy selection of this material imminent significant leashes and distortion of the profile of the wing ready. Relief parts due to the through-holes allowed to keep a lot of “frame” (and in the end, the flight properties of the model) to the desired level.

DRYER, NOT OVEN

If your summer cottage is still no Russian stove, to dry for winter mushrooms do not worry — the unit, a metal box with holes in the side walls, and a few wire rods, collected in shown in figure the installation will solve this problem. According to the magazine “Popular Mechanics” (USA)

PUMPS-GEMINI

PUMP TWINUsing pumps made by residents of the city of Kostanay Alexander Asinim and Paul A. Kolesnikov, it is possible to wash the vehicle, treat it the underbody rust inhibitor, wash a clogged radiator, to spray the bushes and trees or to water the beds in the garden.