For most people, mentions of a dental drill bring unpleasant feelings. But for a skilled craftsman the attitude toward this equipment is different. Perhaps only this mechanism makes it possible to machine complex surfaces and hard-to-reach places in contoured parts. That is why, among other necessary fixtures and equipment, an electric rotary tool (dental drill Read more…
The design of this portable barbecue is convenient both for camping conditions (for example, for tourists, hunters, or anglers) and for a garden plot or a country house for quickly cooking shashlik or roasting vegetables, frying sausages, frankfurters, or fish. Its advantage is that this kind of barbecue can be taken apart and folded instantly, Read more…
We continue the story of the machines and mechanisms built by V. A. SVERBL — an amateur designer from the village of Zelenchukskaya in the Karachay-Cherkess Republic. In the publications “Walk-behind tractor — nothing superfluous”, “A reliable helper for the walk-behind tractor” and “A compact car with the character of an all-terrain vehicle” (“Modelist-Konstruktor” Nos. Read more…
“Butterfly” — that is the name of this sports dinghy. Thousands of similar little craft sail the waters of lakes and reservoirs in many countries of the world. Boats of this class are especially popular in Czechoslovakia and the GDR. These sailing boats are not monotypes, that is, they do not have a strictly defined Read more…
In clouds of snow dust, unusual machines rush down from a high mountain — they look like bicycles, only with skis instead of wheels. On the riders’ feet are slalom boots and skis as well — short ones, with rigid bindings. The outfit is a dense leather jacket, stretch pants, a hard protective helmet, thick Read more…
Two or three intense strength exercises can be more effective than prolonged unloaded gymnastics. A horizontal bar or parallel bars are good for this — equipment clearly not intended for an apartment. However, they can be successfully replaced by a simple device proposed by the Hungarian magazine “Ezermester”. It takes up little space, is versatile, Read more…
Some models of the bicycle electric generator, better known as a “dynamo,” have serious design flaws. For example, the plain bearings in which the rotor shaft rotates need periodic lubrication. And their design is inconvenient to disassemble. Once the lubricant is depleted, increased friction appears, along with wear of the bearing bushings and of the Read more…
The proposed design is a five-section three-seat boat with a carrying capacity of 320 kg. On tourist trips, once hauled ashore, it turns into a fairly spacious “tent,” especially if a piece of polyethylene film is thrown over the top. The boat is so simple that even a person unfamiliar with boatbuilding and having only Read more…
When designing this all-terrain vehicle, amateur designer L. Antokhov from the town of Kirishi in the Ryazan Region aimed to create an all-season, reliable and highly traversable machine with small dimensions and mass, fitted with a closed cabin for three people — a driver and two passengers. The result of the work was an ATV Read more…
Submersible vibration electric pumps “Malysh” and “Rucheek” are a common choice for autonomous water-supply systems of small households, including farms. They are compact, convenient to operate, and reasonably priced. But there is a problem: such pumps cannot cope with subzero temperatures. When the pump is switched off in winter, water is trapped in the supply Read more…
