The proposed design is a four-section, three-man boat with load capacity of 320 kg In tourist trips she, being dragged to the Bank, turns in a fairly spacious “tent”, especially if you throw on top of a piece of plastic film. The boat is so simple that it can make even a person unfamiliar with shipbuilding and have only basic skills working with wood. To manufacture do not need special equipment and space, the whole boat is going in the room of a city apartment. It is made from widely available materials that can be Purchased in stores construction And household goods. The cost is Approximately 20-30 rubles (in passing it should be noted that for the registration of boats is necessary to keep all checks and receipts).
Read more
I created the all-terrain vehicle (developed design and manufactured a working model) is designed for movement in cross-country. The Rover has a two-piece articulated frame and wheels in the form of hemispheres. The turns are produced by the simultaneous “turning point” of the frame and tilting of the two axial pairs of wheels, and therefore the maneuverability of the Rover is almost the same as that of tracked vehicles.
Unfortunately, experience manufacturing propellers for the Amateur designs with rare exceptions not worth repeating. And perhaps the main cause of failures in the inconsistency of the parameters of the propeller with the engine performance. Often Amateur designers create too “heavy” in the wind against the propellers, causing the engine not developing full power and thrust is insufficient.
When my grandson Grisha began to grow and stopped paying attention to previously favorite toys-rattles, the home began to notice that he started to show interest in different instruments and even mechanisms. Then I decided to make him a little electromobility-Quad, where in good weather you can ride on the street, and bad — Yves room. And not only that the child received pleasure from riding — mastering the driving skills he was introduced to technology, getting acquainted with its device.
In the “M-K” have already talked about manual cultivator with fibronogen developed by members of the glee club VOIR (see “M-K”, 1976, No. 12). Further development of this design, in which muscular effort is minimized, was the tiller.
Letters a lot. One of them is to “brand” the forms of various enterprises and institutions, others on pieces of paper torn from a student notebook. But the questions are all about the same: the readers are interested in where, when and how you can get comprehensive information about gliders and hang gliding. We started in 1968 talking about a new kind of motorless flying has generated huge interest and gained the scope is truly inclusive. This, in our opinion, quite natural and not surprising: the level of technical training of young people is now high enough that even at home to build their own full-fledged glider. A shortage of necessary materials also does not stop enthusiasts of hang gliding. Difficulties in other: there is good, detailed and accurate drawings, which could produce details of the glider and the lack of experience and technological skills very often negates the attempt to make a dome (the sail). Reach extremes. In a letter to the seventh-grader Vladimir Nikitin of Sumy region photography barefoot boys. He flies with a small hill on a hang glider, made of spruce and covered with pieces of old red slogan.
Rigging centerboard yacht “salute” consists of two sails (mainsail and headsail), mast, standing and running rigging. Mast are called wooden parts of weapons (“Salute” sail type “Guara” is the mast, boom and gaff). Standing rigging — forestay and shrouds, running — Director the jaw-Gardel (tackle for lifting Hafele), boom-mainsheet and the jib sheets (the ends that serve to control the sails). They are made usually of hemp rope (tight entourage or the special weave) thickness 10— 12 mm. Drawings of parts of the mast and their sizes are shown in figure 1.
“Fly higher, farther, faster!” This aircraft is the slogan became the motto of hang gliders. In our picture the glider master of sports M. B. Gokhberg. The front part of the dome is raised above the spar and forms a profile line, which significantly improves the aerodynamic efficiency of the machine. This glider Hochberg flew competition gliders Moscow area and became the absolute champion of the sum of three exercises.
Diverse and numerous family water bikes, but they all have a major flaw: transport them by land very difficult. Another thing – “ampipe”, on land he feels as confident as on the water. The secret to this versatility in the propeller – crankshaft with propeller wheels when traveling on the roads is the leading “front axle”.