Currently in stores you can easily buy any necessary household products. At the same time, attention and creative efforts of Amateur designers more going on technically complex objects: tractors, ATVs, cars and even airplanes. Changing the homebrew approach to the implementation of the projects; they are not afraid of the need for self-production of complex and accurate parts, which moreover may be subject to strict requirements in terms of strength. One such typical elements present in almost all energy-intensive structures, are cylindrical helical extension springs or compression. In this regard, many of our readers will be interested and, hopefully, it is useful to get acquainted with the methodology developed by the Ukrainian engineer Vladimir Vinichenko, which will help the responsible production of springs with the required quality and accuracy.
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Not so long ago a Swedish doctor-hygienist B. Akerblom wrote the book on… of furniture, more precisely, about the simplest of its species on the chair. “Five thousand years of sitting incorrectly!” he argues, based on numerous anthropological and anatomical data. His insights not only interesting and practical recommendations for professionals. They indicate that the furniture is still little developed, and therefore, extremely exciting field of technical creativity.
Speed kordovye models are very popular among modelers of the USSR. According to the classification of models of the ships they are United in group a-and are divided into four classes: A-1 — speed cord model free design with internal combustion engines working volume of 2.5 cm3, with the propeller; class A-2 — speed cord model free design of the internal combustion engine up to a volume of 5.0 cm3, with the propeller; And-3 — speed control line model free design of the internal combustion engine up to a volume of 10.0 cm3, with the propeller; In-1 — speed cord model free design with internal combustion engines up to 1.5 cm3, with a propeller.
We left Royal Navy under development hollandska-Spirovska submarines of the first generation. This series of nameless boats revealed both advantages and disadvantages of the first Maritime powers of the world in a completely new shipbuilding. The first, of course, include the speed with which built submarines. Here, the shipbuilders of Britain showed their best side. Despite the fact that I had to produce a fundamentally new boats, the timing was very compressed and the quality is very high.
The reduction in the header is clear: GK — mower; unit refers to the width of one meter. So, without any complaints, called their machine with electric drive technology from a young city M. Volgograd region. “Our lawn mower, write the students last year at regional competition “Young innovators — the village” won first place, and at the all-Russian rally of student teams in Voronezh — the third”.
Complementary small-sized furniture because it can be used for different purposes. Have these qualities offer the German magazine “Praktik” (see pictures) segmental modules. The upper part is mounted on two perpendicular to each other by wooden panels.
The industry has already mastered the production of some basic parts from thermoplastics. This is an interesting and promising method for production of large series, however, for individual products it is of little use — complex technological equipment. But similar results can be achieved by using has long been utilized by modelers epoxy resin in combination with glass and carbon fibre.
Sean Hodgins (Hodgins Sean) loves building small electronic gadgets. One of them — a ring that turns body heat into light. The ring is made of aluminum — an excellent conductor of heat, which is necessary for the generation of electric energy. To convert heat into electricity is the Peltier module. The Peltier module converts heat that goes from the ring into a small voltage, and the circuit Board amplifies the current. Currently, the efficiency of the device depends on the temperature of the air, but Hodgins is developing a new scheme to make it work at any temperature.
