The simplicity of the “Arfa” design is probably unique. The vehicle has only six main parts: a frame with an engine, a rear axle, wheels, a ski with a steering rod, and a steering wheel. The snowmobile’s reliability and low maintenance match the very highest requirements imposed on a vehicle intended for autonomous runs across Read more…
One day I came across an article “Vitamin jack” (“M-K” No. 7 for 1985), where the author writes that when preparing juices he crushes apples with a wooden mallet in a small barrel. His argument in favor of such a technology — purely manual — seemed unconvincing to me. Therefore, I decided to share with Read more…
Original and practical designs by the Vinnytsia resident Oleg Andreyevich Ostapenko clearly appealed to the readers of our magazine. After a Central TV broadcast “This You Can”, in which the editorial office plays an active role, and a publication in “Fotopanorama” (see “M-K” No. 1 for 1986) of some developments by a self-taught designer, many Read more…
“My childhood fell on the hard postwar years,” begins M. I. Psaryov in his letter to the editorial office. “Back then, we made our own toys. Apparently, that is what planted in my soul a love for designing – all my life I have never parted with tools, metal, wood, and, of course, pencil and Read more…
Ambrosia… This noxious weed, widespread in the southern regions of our country, causes a lot of trouble for farmers. Rapidly spreading in the open, it severely depletes and dries out the soil, and in fields it chokes out cultivated plants. Ambrosia is a frequent cause of poisoning in domestic animals, and in humans its caustic Read more…
Is it really necessary to divide transport into urban, intercity, off-road? Wouldn’t it be better to create some kind of universal one that could be used everywhere? It must be said that there have been many such attempts throughout the history of technology. But life shows their failure. The search for something universal, suitable for Read more…
For a thrifty, handy owner, everything is always at hand. There may even be a homemade mini tractor, not to mention mowers-threshers and other motor and electric helpers. And this is quite understandable: with such equipment you really will not be at a loss anywhere. A worthy place here is occupied, helping to keep the Read more…
The proposed car model showed the best-in-class result at the European Championship in 1980, and in 1983 it reached a maximum speed of 252 km/h. The weight of the fully equipped racing car is 1250 g (limit 1500 g). This allows changing the load on the wheels depending on the race conditions by installing additional Read more…
— How to explain such a “hybrid” — a two-wheeled mini-tractor and a single-axle cargo cart on a rigid hitch? Doesn’t a mini-tractor have more capabilities with the same four wheels? — those who got acquainted with my mechanical assistant usually asked. The question is not idle: it reflects interest in the features of the Read more…
The chemical method of plant protection against pests, diseases, and weeds remains the main one today and for the foreseeable future. Most often, it is implemented by spraying agricultural crops with aqueous solutions of pesticides. The quality of spraying determines the effectiveness of the product, its application rate, and the level of environmental pollution. Therefore, Read more…
