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 cm
3, with the propeller; class A-2 — speed cord model free design of the internal combustion engine up to a volume of 5.0 cm
3, with the propeller; And-3 — speed control line model free design of the internal combustion engine up to a volume of 10.0 cm
3, with the propeller; In-1 — speed cord model free design with internal combustion engines up to 1.5 cm
3, with a propeller.
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Wheeled Buer, beach sailing, sand yacht, metromobile… All these terms refer to the same Tina of vehicles using the movement force of the wind. Designs of such “petroholod” — a great many, from year to year are added up — three wheels and four, with Latin sail and with the Bermuda arms, hard planes, reminiscent of an aircraft wing, and even with a horizontally positioned fan-like impeller anemometer.
A simple device developed by members of the self-similar circle of Ufa city Palace of children’s creativity, shoal be useful to many tracks. It makes it very easy to create a miniature race track for sea trials models. We have seen this, having tried it, in fact: “digging,” grooves on a track is accelerated many times over.
No matter how much we have seen this picture every time it will amaze and fascinate with their uniqueness: easy flick of a switch — and just as silently as it stood, the car started and ran, picking up speed. The heart of this design — the electric motor. To it again drawn the attention of automakers and even in connection with energy problems. Do not stand aside from these searches, and Amateur designers, some of their works have been highlighted on the pages of our magazine. Today we introduce the electric car of formula D — baby, built by our reader A. Logvina from the city for his daughter called “Alyonushka”.
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”.
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.
I’m a physics teacher and a faithful subscriber of the journal “modelist-Konstruktor”. Write and assemble a binder began while still a student in 1980. Thanks to him I became one of those whom the people called “avid homebrew”. One of my first designs was a mini-tractor “Gerez”, built together with the guys from the circle of technical creativity, which was led by part-time. Mini tractor took first place in the Republican review of technical creativity of pupils. Engine — motorized С3Д installed across; the gearbox from the car GAZ — 51, rear axle — from “UAZ”, shortened. At the mini-tractor 20 gears: 16 forward and 4 backward speed from 1 to 52 km/h. Its own mass of 500 kg can pull the truck with load up to 1200 kg.
The smaller the cubic capacity of the engine performance, the more stringent the requirements for its design, manufacture, Assembly. Speed, cord of 1.5 cm3, which we offer, fine-tuned for many years, takes into account the shortcomings of previous designs and new directions in creating “polutorachasovom”.
This model has for many years successfully “replicated” by the modelers. The secret of its popularity are the simplicity of design and good flight qualities. And despite the immutability of the size of the “serial” model, in various instances were established micro-motors a working volume of from 2.5 to 4 cm3 in the compression and glow options. But the most often used are widely known for KMD-2,5 and equipped with a propeller diameter 220×120 mm Length of cord, generally used for runs close to the standard value of -16 meters. For the manufacture of parts of the model mainly applies to non-deficient materials.
The unusual technique of grafting of trees was proposed by I. V. Michurin, and in the book N.Verzilina “Travel with house plants” describes this original method of obtaining cuttings from living branches directly on the tree. He was “surrounded” branch vessel with water and gave them the roots of the old branches of the pear and Apple trees, cuttings from which the ordinary by not okorenyayutsya. Most clearly such an experience to spend with oleander: its cuttings are particularly well give the roots in water (about a month).