Recently an increased interest among readers judging by the letters and calls to the editor, raise questions related to the bench scale models. It is caused, apparently, the increasing penetration of imported models to the Russian market. Hence the request to the editor: to tell you about a common, global scale bench models.
Public Design Bureau
TAKE FROM AEROSOL
If you use as “inflatable fuel tanks cuts rubber catheters are recommended… not to throw away spent cartridges from under aerosol mixtures. The fact that after cutting of the cylinder is possible without damage to remove from the mounts the valve with the housing. And the valve is the ideal adapter for the production of “inflatable” tank. From the larger diameter valve has a shoulder, as if
THE FLOAT – ON FOOT, BY OARS AND SAIL
Perhaps you will agree, that more accessible and useful for the health of stadiums than small and large rivers, lakes and reservoirs, and a large number are scattered all over the country, it is difficult to come up with. But today, they, unfortunately, are mostly deserted. In recent years, water a bit back from the sails of the windsurfers, but also this wonderful sport has not yet become widespread. Obstacles are the relatively high cost of the equipment and the small scale of its production.
FISSILE HANDLEBARS
Many modelers use in training a discrete instrument. Its advantages — low cost and high reliability. But from failures nobody is guaranteed, and discrete hardware problems can lead to jamming of the steering wheel in extreme position. To be able in any case to save the model, just need to modify the drive wheels, causing a few power elements (regardless of their type, whether electromagnets, solenoids, or the centrifugal machine with thrusters on the course or pitch) to work in a single wheel, and separately for half.
ON THE WAY TO THE RECORDS
In 1988 there was a serious prerequisite to the beginning of work on items for ignition, and primarily on spirals candles glow plugs of internal combustion engines. This was due to the currency problems, which almost completely stopped the flow of imported candles and candle-heads. Also affected by the desire to have a set of coils with different geometrical parameters (for fine-tuning of the engine).
IF IN TOW – GIVING
With the beginning of the summer season a long string of cars, “tired”, like their owners, in crowded cities during the long winter, at maximum speed mchu their owners to Sunny resorts. And more and more often on busy roads you can find cars with trailers, and in recent years — and intact houses-dachas on wheels. Many have thus successfully solve the difficult housing problem, getting rid of the problem of the presence or absence of free places in the campgrounds. Such structures are not repeatedly described in this magazine (see “M-To” № 6 73, № 7 75, № 7 77. № 5’79).
WINDROLLER IS A SAILING TRICYCLE
Sailing has always been considered a true male. And not by accident: this sailor has the necessary power and speed of reaction, physical endurance, ability to keep calm in even the most difficult circumstances. However, sailing there are two significant negative First — seasonality in our mid-latitudes means to do it can be no more than five months in a year. And second, the need fairly large areas.
SECRET CONE OF CONSOLES
It would seem, what can there be secrets? Many people use on flying models trapezoidal wings — it appears that the process of their manufacture is well established: two templates of the root and end of the profile fixed to the foam blank; two move the cutting filament thermolabile, watching the cutting speed by marking the length of the chords. However, to completely synchronize the movement never fails, which is clearly seen on the “waves” on the surface of the product.
TIMER WITH FOLDING WINGS
Timemay any flight models are, in fact, consists of two clearly differentiated stages. The first — motor climb. The main objective here is any means for a strictly limited time for a given mass model and power plant to raise timesnow for possible high altitude and to accelerate to maximum speed, allowing for a transitional land use kinetic energy for an extra lift transition point in the planning mode. The most logical way to achieve these requirements is the reduction of aerodynamic drag of the model in take-off configuration.
SCREW – ON COPIER
Fixture is used for manufacturing propellers boat on lathes Тb-4 and TV-7. Using the tool it is possible to produce propellers of aluminum alloy (D16T), brass and plastics. Moreover, the production of screw blanks of alloy D16T takes up to 10 minutes, and made of brass — up to 40 minutes. The diameter of the screws up to 50 mm Number of blades — 3. You can do two – and four-bladed screws, but this requires modification of the spindle and tracer. The fixture consists of a housing, which is attached to the copier. In case the spindle is inserted, it is secured to the arm and disc. In a lathe Chuck clamped to the mill.
