The human neck is very perfect mechanism that performs many vital functions. However, it is very compact, flexible and surprisingly agile. All this allows to consider it one of the most wonderful inventions of Nature. The only thing that the neck is not calculated, so it is in opposition to those forces which man puts his own head knowingly. The musculoskeletal system of the neck, for example, does not tolerate sharp linear motion and rotational motion of the skull that occurs when different kinds of shocks and blows, especially in the chin or neck. Such effects usually lead to a concussion or intracranial injury.
RELIABLE HEAD PROTECTION
Mini-tractor must admit, I’ve built without any drawings (except the sketches of parts that he had ordered Turner), so to speak, to the eye, intuitive, having all components and assemblies as compact as possible and easier for the tractor. Then, the accumulation of operating experience, many times altered it. But more on that below. Built because I needed a mechanical servant, able to perform almost all the agricultural work on the plot. Such “abilities”, in my opinion, has tractor T-25 vladimirets. He was the inspiration when building my mini. Hence the nickname — “little brother.”
The owner of a light moped (or, according to modern classification — mo-led, i.e. motorbike), equipped with engine D-8, eventually notices that his two-wheeled machine is easy enough starts, sometimes not pulling uphill or bad overcomes the roads. And engine starting by using the Bicycle pedals, on the move, not too easy. However, a moped can be improved.
Repair of apartments are usually not restricted to pure cosmetics. Frequently time some alterations, additional equipment: build utility cabinets, replacement of cornices, hanging shelves, mirrors, hangers. And this inevitably confronts us with the eternal problem: how it is fastened to the walls? Everyone has experienced domogala my favorite techniques: someone drilling holes with a drill with pobeditovym a drill, others prefer carbide punch and hammer. Well, if you need to attach something to a thin wall – for example, the current incabin boxes or cupboards? Industry in this case offers nothing to the house master. For ordinary walls, you often need something more reliable than sagaydaka over time, the wooden plug or plastic plug.
For the last four years on the initiative of the heads of model aircraft clubs in the town of Zheleznodorozhny in the Moscow region competitions school students in the new class of resinator indoors. If you compare these models with others, participating in competitions, for example, a glider and a helicopter “Fly”, the proposed resonatory more complex. Therefore, it can be recommended for the manufacture of the guys visiting the club for the second year.