Public Design Bureau

FLIGHT ELECTROLET

Categories World of models

AEROBATIC ELECTROLET

Judging by the letters from our readers, the interest in the model aircraft with electric motor is not reduced. Comes a lot of questions about the challenges of producing interesting flying machines and development of specific projects. One of them we want to acquaint the followers of electroperu. Very effective control line aerobatic model created by A. SUHANOVYM from the city of Astrakhan. In addition, they built “nilotica” interesting minimal use balsa, which gives the possibility of playing in almost any conditions. If necessary, balsa items without much damage to the mass of the model can be replaced made of lightweight Linden (in this case, TopMenu blanks should be reduced in half to two times).

TWO FIGHTING WING

Categories World of models

TWO FIGHTING WINGDeveloped in the circle of aircraft modeling station of young technicians of the city of Berezniki of the Perm region and the following proposed model of “air combat” is designed for mid-level athletes. They are distinguished by a good performance, sufficient strength and manufacturability. But for some modelers who do not have experience with foam lomikami or do not have access to the material of the required quality, it may be advantageous to use as the main material lime veneer (which, as a rule, can be made independently). Both bouzouki built on a “flying wing”, dominant in the Junior class and sports the “air battle” of the last decade.

ERSATZ FUEL “CALLOC”

Categories World of models

SUBSTITUTE FUEL

Search methanol for glow motors have always been a big problem. The situation is slightly simplified Pope the publication of interesting material about the ersatz fuel in the “M-K” № 6, 1986. However… was not so easy to find and required for its preparation the solvent oil-based paints. Finally the problem was solved after the publication of a number of other recipes fuel mixtures in the “M-K” n b star 1990. Of all the options the most simple mixture based on gasoline And-76 and AI-93. However, there is little difficulty. On a mixture of perfumes work well only with a special selection of glow candles. But this possibility is not at all.

GENTLE TRUNK

Categories Auto Moto Service

GENTLE TRUNK

There are many clamps to secure the roof rack of the car. However, quite comfortable and no unsightly gutters on the roof I did not have to meet. Offer readers the “M-K” I developed the design of the locking mechanism of the trunk. It was developed with the proviso that in the manufacture of trunk with such clamps can only use the locksmith tools.

TANDEM FOR TWO, THREE, FOUR

Categories Design

TANDEM FOR TWO, THREE, FOURFor a basis we took the road bike (with “women’s” frame), set on it a longitudinal beam of the two aluminum profiles-“parts” and fixed on the beam two seats with backs so that the first rider was able to pedal the front wheel drive and the second conventional chain drive the rear wheels. So we got a double bike with the same dimensions that and serial single. Sitting in the front seat rotations”t pedal for more drive, located in the center of the front wheel, supports the balance, and also serves as the driver. The second rider works the pedals, resulting in the rotation of the rear wheel while sticking the handles on the back of the front seat.

DESIGN GYROPLANE DAS-2M

Categories Design

DESIGN OF A GYROPLANE DAS-2M

The fuselage truss, tubular, collapsible design. The main element of the fuselage is a frame consisting of horizontal and vertical (pole) pipes ø 75X1, made of steel 30KHGSA. They are mounted towing hitch with lock and receiver air pressure, the dashboard, the pilot seat, secured with seat belt, control unit, tricycle, with a nose steerable wheel chassis mounted on motorhome power unit with a pusher propeller, stabilizer, keel with rudder ball joint to the rotor. Under the keel mounted auxiliary tail wheel with a diameter of 75 mm. together with the Pylon struts d 38X2 length 1260 mm, tubular beams, the main wheels d 42X 2 with a length of 770 mm, made of titanium alloy VT-2, and braces d 25X1 length 730 mm of steel 30KHGSA forms of spatial power frame, the center of which is the pilot. With the horizontal tube of the fuselage and the ball joint of the main rotor pylon connects with titanium rails. In the installation of the scarves in the tubes is established the bougies made of aluminum В95Т1.

TRACTOR “WORLD ON A STRING”

Categories Small-scale mechanization

THE TRACTOR

To make myself a mini-tractor (MT) is a dream of many. But they sometimes stop because of the difficulties in acquiring scarce nowadays powertrains, gearboxes with the right gear ratio, differential gear and other parts. Other (basic this beginners homebrew) deterred by the complexity of intricate drawings and manufacturing technology design. A longtime subscriber of our magazine, the author of a number of original designs of small tools V. Boldyshev offers not to despair and peculiar to each natural nous braver to do things. How! Technology, which sometimes intuitively come to many of the homebrew, collecting in a single structure existing units and details “at the place of installation”, doing virtually no daunting drawings. A “deficit” around, taking advantage of opportunities Vtorchermet… or lowly of the landfill, which sometimes careless business executives charged fuses good.

MOKIK ON THREE WHEELS

Categories Design

Easy tricycle Lama, apparently, ‘ will be the perfect means of transport for many — including for people who have lost mobility, deprived of the ability to walk normally. It is stable, develops a moderate speed — up to 30 km/h, and its one door body, made with simplified technology, well protects the driver from the vagaries of the weather. But most importantly — mokik with the engine up to 50 cm 3 and such a low speed in accordance with the rules of the road vehicle is not, and therefore can be made without a license and without registration in GAI.,

HOW MANY IN THE TANK!

Categories Auto Moto Service

HOW MUCH IN THE TANK!

How much fuel in the tank! This question always concerned the driver of the car, and the motorcyclist and the pilot of the trike. And if the vehicle with varying degree of accuracy to this question can be answered, then the rider or the pilot of a light aircraft to make it much more difficult. Offer device DPJ alarm on the minimum remaining fuel in the tank based on reed switch contacts, operating on the circuit. As you know, under the influence of permanent magnet on the reed switch contacts are closed they are to be used to enable the audible signal and warning light.