our Readers probably know of noma abbreviation TX-200. It is the tan called autocritic original design created by the famous in the circles of avtomodelistov Kharkiv V. Taranukha, in collaboration with the candidate of technical Sciences Y. Hajnowski. Creative Union of theory and practice turned out to be quite fruitful. Today we introduce readers to one of the most interesting developments of this magnificent design of the Duo — car railroad layout, created with the extensive use of available and relatively inexpensive units.
For many years the rules of competition flying-th activities of the International Federation of air sports is a category microrocket with authorityrules descent. At the time, the athletes were given this technique a lot of attention, then about her for some reason for a long time seemed to be forgotten. However, there is now a surge of new interest in rotochutes—so among modelers athletes call missiles with authorityrules descent.
Created in our circle of control line speed model aeropittura school of a subclass with an internal combustion engine working volume of 1.5 cm3 the diagram is for a rarely used “asimmetrik”. In its construction—a number of technical solutions which allowed to improve starting (which is very important in the environment of the model newcomers) and performance. So to facilitate germination on a wave at lower than championship technique speeds the length of the nose redan decreased, while the angle of attack is his “sole” in the back work area a bit increased. Absolutely unconventional technique — Vegas the front edge of the redan on the corner about 8′ in the view of the model from the front. This solution ensures a reliable start, eliminating incorrect even with the cast time of the glider inside the running circle (hydrodynamic lifting force developed on the “sole” of redan, has a component directed towards the left side). In addition, an important factor of removal of spatter from under the redan on the right side, that is away from the disk rotation is offset to the left of the propeller power plant.
Lately becoming more popular competitions on water-motor sports. The exciting drama of racing racing colorful boats, iridescent splashes of water, enthusiastic audience! RC racing boat are not less popular among athletes of all ages. The design of such micropolygon simple. The model is quite well-known motor type “Mabushi-540” equipped with a two-bladed propeller with a diameter of 35 mm and a step 47 mm. To power the installed battery 7.2 V/1.2 A*h Nickel-cadmium elements. Management — with two-channel proportional equipment. The engine speed change by the speed controller and the direction of the path of movement of the steering machine.
Amateur Designers often used in the transmissions of their cars, the chain transmission. And sometimes faced here what problem: for the calculated gear ratio chain couples find it difficult to choose ready-made sprocket with the desired number of teeth. But them it is possible to make yourself using the jig, assembled on the basis of the gear closest to the desired amount. Suppose you need a sprocket with 26 teeth and pitch of 19,05 mm. will Select the gear with the same or similar number of teeth. For example, 27. (In this case, the gear ratio will change slightly by 4%.) The gear is hardened, has a thickness of 19 mm and a bore diameter of 20 mm.
Many models can be made to forgotten the method, by squeezing the sheet metal. Extortion is used for any thin-walled parts (e.g. fairings, cowlings, shrouds, wings, wheels, and similar). Often they are made of brass or aluminum alloys. The material is pre-annealed with a pair of scissors and cut the workpiece with considerable allowances. The tools serve as a mandrel, anvil and various hammers. The process of knockout s is the stretching of the material when its thickness decreases, and in the sediment, which implies an increase of the thickness. 
I suggest the owners of motorcycles IZH a simple design of the towing device is constructed as a single unit with a mounting bracket, a spare wheel. Despite the fact that between the sidecar and the bike is not too much space, “reserve” does not interfere with passengers on the rear seat.
