Children in a hurry. They are in a hurry to become adults. This children’s line for the purpose of education first used, perhaps, to A. S. Makarenko. He loaded the boys a real job and turned irresponsible brats to serious people, proud of themselves and their work.ON A BIKE FOR… SKIERS
Attempts to combine a bicycle with skis have been made before. However, the resulting snowcat designs could only be used to ride down hills. Our reader and engineer L. Gurfinsky, along with his friends, managed to construct a simple reciprocating mechanism that transforms the snowcat into a ski-bicycle: now it can be ridden both downhill Read more…





Snowmobile, manufactured by V. I. Shadrin is not motonarty. The author of the design set out to make winter “Rover” of the Izhevsk motorcycle plant with minimal alteration to improve performance on snow-covered path.
At school, for more than 40 years, engaged in the construction of various mechanisms to facilitate workplace and at home. (In the journal “Inventor and rationalizer” was placed in my article “power saw and pump”, which caused a lot of queries.)
(The end. Beginning at No. 10, 1973) In the tenth issue of the magazine, readers got acquainted with the General layout of the three-wheeled micro-car, only “Friendship” design Bykovskiy, G. Malinowski and B. Horev. Today we talk about refinement and alterations to the factory components and parts that have been applied in the construction of this interesting machine. Remember that to make their own does not make sense. Even with the appropriate machining equipment it will greatly increase the cost and complicate the work, not to mention the fact that the quality of parts made in primitive conditions, much lower than factory.
After publication in No. 5 of our magazine for 1972 article “Three wheels instead of four,” we received hundreds of readers ‘ letters with a request to send or publish drawings of three-wheeled micro-car, only “Friendship”, built in auto-design circle school No. 200 Timiryazevsky district of Moscow on the project of teachers Bykovskiy, G. Malinowski and B. Horev. No less — if not more — it’s letters directly to the school, where he created the first micro-car, only “Friendship”. The interest of young technicians of our country to this machine was so great that many specially came to Moscow to the Exhibition of achievements of national economy of the USSR, where it was exhibited.
No one ever sought to do so, he was chasing passers-by and deliberately crushed them. But also special requirements, stipulating it is the safety of the car, there was very little. Most of them belonged to the lighting devices Projecting the remaining components and assemblies of the vehicle, the designers were free to think about anything: power, speed, carrying capacity and so on. Safety in calculation were not accepted: the problem, as it did not exist. And of course, speech could not be about the complex constructive activities, designed to perform only one function: to provide security.

The world’s oceans! Nearly four-fifths of our planet’s surface is covered by water. Always changeable and movable, water as a mysterious living being for thousands of years attracted people. Ancient water roads people overcame space in the water to search for food, striving to penetrate into the underwater world and to know him.

Amphibious vehicle design N. M. Purtova. Doesn’t that sound nice, getting up early in the morning, roll the boat out of the garage, lay a tackle, get in, press the starter and… to take the highway directly to the river. And there go into the water and swim myself to favorite places to fish.