Usually mention the proverbial fifth wheel. However, some automakers use a formula, reflected in the name of our material. They really believe the fourth wheel in the car superfluous. Judge for yourself: unlike a four-legged three-legged stool on an uneven base does not wobble (remember school: three points can be spend a plane, and thus only one). Consequently, the frame “trehalase” will be more rigid and the car will be more lightweight and durable (and hence cheaper).
On the roads of Kharkiv, there was one car with the familiar letters of the COI — “Club eternal”. The automotive laboratory of the centre of scientific and technical work is headed by the laureate of many competitions NTTM Valerie L. Taranukha. This time in the neighborhood of the letters KVP caused the index of the TX-200. And the car, unlike all previous is built via a three-wheeled configuration, using the whole back of the scooter T-200. In this part is the main “rational” of the new machine, created the “Club of the eternal search for” V. L. Taranukha, together with the candidate of technical Sciences Y. S. Hojnowski. Hence the index — TX-200.
On our market there are now a lot of imported bikes with a large (over a dozen) number of speeds. But fascinating these machines are, perhaps, only youths. Experts understand that to take full speed full still impossible: difficult even to choose the correct gear and often switch them on the go is not only tiring but also unsafe. Because switching is required usually in difficult driving conditions or cornering, when the hands should firmly hold the steering wheel, and one of them is necessary to manipulate the lever. As you know, the cars are only 4 — 5 speeds, and the drivers prefer to upgrade to automation.
Because of the diversity of karts, built by athletes and produced by the domestic industry, the most advanced in design and for a number of technical characteristics is currently cards KS-76 designed in TSKTB DOSAAF of the USSR and manufactured by the Leningrad production Association “Patriot”.
Innovators of the Moscow machine-tool plant named after Sergo Ordzhonikidze developed an unusual screwdriver, equipped with a booster with transmission ratio 1 : 6. This means that one turn of the handle of the screwdriver results in six turns of the tightening screw. Such a screwdriver can be successfully used in small-scale and serial manufacture installation and other operations on mechanical parts, fitting and mounting work with mounting screws when fixing various caps, visors.
In recent years, rakotomalala all levels are fond of a simple “building” material for flying model — plain paper. The journal “Modelist-designer” told you about the paper models on their pages. And if earlier to make the model only of paper required regulations, today this material is widely used “voluntarily”. The proof starts at the all-Russia competitions on the Cup of S. P. Korolev. About 40% of the participants in the classes SA and Ѕ6А used the paper model. Our story about the rocket champion in the class of parachute models (SA) Denis Gaganov (Sergiev Posad).
Have trace modeling particularly attractive trait: despite the relative simplicity of the models, they give space for the creative work of the children’s thoughts, development of design imagination. An illustration of this situation can serve as our mug on the car model “Stratos” (Fig. 1). Recently Moscow plant “Young technician” started to produce the engine of DP-15. He has two obvious advantages: its capacity is sufficient to move the model, and it is quite affordable. Another plus: when calculating gear, you can focus on the spur gear for electric shavers that are sold as a spare . parts. Cons — size and weight — when novice modelers can not be ignored.
The development of the untold wealth of the North, Siberia and Far East is impossible without specialized vehicles. Many more years will have to transfer the cargos to remote parts of the country in the most difficult off-road conditions, deep snow, hummocky ice, by freezing the swamps and reeds ducts.
First image of indoor model airplanes made of bird feathers, I saw in the years of the great Patriotic war, even as a boy. Father was at the front, and my mother and my younger sister and brother were among the evacuated from Moscow to Omsk.
The idea is to make readers Boer came to me in the following everyday situations: having descended into the manor house, did not have time before winter to conduct water from the well. Dig the same trench though not long (about 5 m), but fairly deep (about 2 m) in the frozen ground seemed difficult. Not to wait for the next summer, I decided to drill a little below the freezing depth of soil horizontal borehole (the borehole of relatively small diameter) for laying in it steel pipe in 3/4″ for the supply of water from the well through the underground to the house.