In recent years, foam catamarans have begun appearing on the water bodies of the Urals. They are unsinkable, convenient to operate, durable, and simple to manufacture. The figure shows the design of such a catamaran. Its dimensions: 3750X1600 mm, plate thickness from 40 to 150 mm, float height 200 mm and width 400 mm. The Read more…
This wheelbarrow was designed (if you can call it that—the process of thinking through the design and estimating dimensions) and built in a few hours after my brother and I received a message from our father in the village asking us to help him build an access road to the house. It was clear that Read more…
It’s hard to imagine urban and rural life without running water nowadays. Well, if there’s no centralized water supply and a well is nearby, the simplest solution is to use an electric pump to lift water. However, that’s only half the job. A home water supply system should include a storage tank, automatic pump control Read more…
When descending on alpine skis, as soon as the transverse or longitudinal load exceeds the set value, the binding automatically releases, freeing the foot from the ski. The detached ski often rushes down the slope, which threatens many troubles: having accelerated, it can injure another skier, and when hitting an obstacle (stone, tree) it can Read more…
“Potatoes are often called the second bread. But this bread is not easy to come by. Especially without using prohibitively expensive tillers and mini-tractors, relying only on a shovel and a hoe. About a year ago, “Modelist-Konstruktor” decided to help, publishing a good development about a tracer-potato planter made from water and gas pipes. But Read more…
For remote monitoring of the serviceability of stop-light lamps in a car, transistor electronic («Modelist-Konstruktor» No. 6’2000) or relay-transistor devices are usually used. The latter is part of the standard electrical equipment of some cars as relay 4402.3747 and represents a design of magnetically controlled HERmetically sealed CONtacts — reed switches («Modelist-Konstruktor» No. 7’91, 4’98, Read more…
Many youth technical clubs and stations (КЮТ and СЮТ) have karting sections. The small machine not only helps kids learn the general concept of how a car works and master the basics of driving, but also paves the way for many of them into big-time motorsports and reveals their potential in technical creativity. The karting Read more…
Few car owners do not try to improve their consumer qualities. The most extensive field of activity for auto-rationalizers is the power plant. From time to time, publications appear about gaskets, attachments, or additives that increase engine life, optimize fuel consumption, reduce exhaust toxicity… Our Ukrainian reader proposes an aerodynamic attachment for the carburetor. He Read more…
Every DIY enthusiast regularly faces cutting sheet metal and non-metallic materials. Using hand shears is inefficient (especially for large sheets): with high labor costs, the cutting quality leaves much to be desired. At one time, I used factory-made lever shears for metal. However, unfortunately, they had a not very reliable design, and when trying to Read more…
To obtain hot water in a bathhouse, a tank-register on the stove pipe (or a boiler in the stove itself) and an external tank in the washroom are often used. Water circulation between them is carried out by natural convection due to the difference in specific weight of hot and cold liquid at temperature differences. Read more…
