During winter outings to the country — to relax or for stashing the gifts of the garden — or in a tourist hike of the day can be a situation when you have to carry a heavy backpack. Pull it for yourself, going through the snow — enjoy unpleasant.
This single machine with “air cushion” created in the engineering laboratory of the Leningrad Palace of pioneers named after A. A. Zhdanov. One engine from the motorcycle, rotate the fan creates the necessary pressure under the platform, the second, of bike air screw located behind the driver. The device weighs only 45 kg; the test Read more…
Sharp and correctly sharpened tool was always a sign of the professionalism of its owner. However, it is important skill to master to bring their production tools to a working state. But the quality of the sharpening tool is a simple touchstone or elektrotochilo is not only long but also difficult. They are replaced by more productive equipment and machines of industrial or self-production.
What could be simpler than a rotating roller with teeth! Bumping clods of ploughed soil, he crushes them like a harrow. Peg line Ripper developed members Vorovskogo mug enemskoe school Rashid Salikhov and Adam laiuk. Young designers have made the main working bodies of two steel kolkovich a roller and a rake with long teeth. When you want a superficial loosening of the soil, has some rollers, driven by electric motor. Transport wheels at this time raised above. frame.
If you are tired continue to Tinker with the old battery that constantly has to be recharged at home. You might need to know all about what is on the market today the batteries before you buy a new battery.
Materialiter Mr-3-4 (motor cultivator, 3-I model, 4-rotor) is a result of long searches conducted by young inventors. The final version consists of engine, from chainsaws “Friendship” with a homemade step-down gear, the Whole mechanism is mounted on a frame supported on two rubber wheels of the kart. Handles are two section of water pipe; the spacer between them fastened pivotally with the front wheel which functions as a regulator of penetration.
The main parts of the design-balsa ribs, pine spars and foam sock. Working on the model (or, as happens most often, on a series of models) it is better to start with the production with the help of Thermaltake it socks. Construction of the “ball”, melkosortnogo packing or foreign blue foam on metal templates cut blanks length of about 500 mm. the Best material, it is necessary to recognize, is the blue foam. Although it is more expensive, its advantages are invaluable – in the cut he almost has no pores. Hence, the increase in the mass of glue when the wrapping paper will be lower. In addition, at low density and stronger than other varieties.
In the fields of student production teams s the collective farm named after civil war hero Peter Redneck way to find a car. With the appearance of the tractor as the tractor. But look more closely and you will notice a certain “teenage” awkwardness of his farms, more sonorous than the “adult” of the tractor, the voice of the motor. This is understandable: the car has an engine PD-10.
In 2007, No. 9 of our magazine was published an article by Muscovite Vladimir Aleshin on the invention of the Bicycle the hub of the rear wheel, capable of movement to choose the optimal torque and in a timely manner automatically shift gears depending on acceleration.
CAR — FOR WHAT? You need a car? What? This question confronts everyone who intends to buy a car manufactured in the factory. But as you know, choosing the right type of machine is limited. Even more urgent this question, if the car decided to build their runes.
