How much trouble tire demounting and mounting on passenger-car wheels causes for beginners (and not only them)! Bent rims, torn tire beads, tubes bitten by a tire iron, and even injured fingers are frequent companions of this work. That is why many car owners prefer to go to a service station and entrust it to Read more…
Historians claim that the sail appeared on land about four millennia ago! Fantasy? No — there is documentary evidence for it. In 1953, an Italian archaeological expedition excavating the temple of Ptolemy near the town of Medinet Madi discovered the remains of an ancient land sailer. It was designed and built under the direction of Read more…
For a long time I have been using a long-purchased single-axle hand utility cart (unfortunately, information about the manufacturer has not survived). But, as I recall, the cart’s passport listed the following data: load capacity — 25 kg, mass — 6.5 kg. The cart is made, as they say, conscientiously; the design is reliable, it Read more…
For a successful fishing trip it would be nice if good tackle were joined by luck, and also, as they say, “you have to know the places.” And while luck is an unreliable thing, I did know the places where fish could be found. Getting to them, however, was often difficult even for someone on Read more…
There are many rivers and lakes that can bring joy and pleasure to those who enjoy recreation on the water. But most bodies of water where you can boat are located far from populated areas. Leaving a boat in such places is unsafe. Therefore, today we invite DIY enthusiasts to get acquainted with a compact, Read more…
The automotive trailer discussed here was built by Dmitry Pekarev. In general, he is still a quite young man — he is 25 years old. In their family, which loves to spend summer vacations actively, there is an old VAZ-2101 car and a “Kazanka” boat with a motor. However, there was nothing to deliver the 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…
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…
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…
