Designers snowmobiles know that linking directly to the crankshaft of the engine and the propeller is unprofitable: too high engine speed do not allow to use aredigital optimally. To reduce the propeller revolutions Amateur designers use chain gear, ploskostopie belts, banded V-belt transmission. You can meet the most reliable and compact single-stage gear reducers. As a rule, however, they are quite complicated. The most simple design managed to develop one of the enthusiastic Amateur “aerosanitary” from the city of Tchaikovsky, Perm region M. Psarev. On the processability of the mechanism at least tells TC that he “produced” a kind of microseries — was repeated at least five times. Today we introduce you to drawings and manufacturing technology of the gear.
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Victor E. Marina from Rostov-on-don from a young age engaged in the construction of models of free flight. In recent time, leading a circle of aircraft modeling on obsut, he became interested in the structures with circular drainer, discreto. However, to achieve good results for a long time could not — flying “plates” were heavy, clumsy, and most annoying, bad flying.
About halfway between Moscow and Yaroslavl lies an ancient Russian city Pereslavl-Zalessky. He is known not only as the cradle of the Russian fleet, but, as it turned out, their craftsmen. Pereslavskogo the population of the district are mostly employed in the agricultural sector and in rural areas without mechanical aides can not do. To buy a tractor, even a small one, under the current rural income is almost impossible, so come to the help of savvy but hard-working hands.
Leafing through a binder of “Modeler” in 1975, I noticed an article in the No. 3 car, “rainbow,” built by young technicians from Tbilisi. Enjoy the car, I decided for their children to make such.
Over the past 3 — 4 years in the lists of winners of major Russian competitions in sport flying are increasingly common names “rocket scientists” of the Republic of Karelia. So, on superiority of Russia among older students, the 2008 champion in the class S6A became the student of Petrozavodsk Ilya Drats. And team the victory it celebrated, too, “the rocketeer” Karelia, which was represented by pupils of school № 45. Even in the same class S3A, they were third in the overall standings in fourth place, behind the team of Belgorod and Moscow regions and the Krasnodar territory.
A quick key. 
The car was built in the days when I realized that the promised “reformers” two cars in exchange for vouchers, not only to me but also most Russians have never get. While we had to work more, and life became worse. On the salary they were paid very irregularly, could not buy a car. But it was necessary to survive. The hope remained only on the earth-mother — only she could help. But the suburban area was far outside the city, and get to it there is nothing.
European champion 1979, on models of missiles in the category of S-6-A X. Ignota (Spain). In three rounds it model showed the best result, and the fourth, additional, — 3 min.
Almost all designs drive bikes have a common drawback that reduces their efficiency. This defect is uneconomical expenditure of muscular energy in the change efforts from one foot to the other during the passage of the pedals ‘dead spots’ (the vertical position of the connecting rod). A large part of the muscular effort at this point is directed to the axis of rotation of the pedals and not so much does the useful work, how much increases the wear of the bearings of the carriage. No wonder the cyclists before the withdrawal of the rods from the vertical position. As a result the course begins with partial loss of muscular energy, which causes premature fatigue of the cyclist.
The model is designed to compete in all-around in class F-3-B. Although the airframe is designed for domestic equipment ROOM-2, it can be successfully applied abroad.