It all started with the fact that we are a young childless family bought two “Kama” and became interested in Cycling. With the birth of his daughter had to solve the task: how to travel together? Did a little chair, and set it on the rear trunk. It has served us faithfully for several years But the daughter grew up, and sit in the car seat she was cramped, uncomfortable, the idea of creation of easy folding, durable enough trailer stroller, quickly attachable to the bike.
Associate Professor of the Department “Technology of mechanical engineering” of the Mari state technical University M. L. Popov, having a great experience with Bicycle sport, sent a letter to the editor which described and theoretically substantiated his view on the problem of improving the reliability of the bearing unit of the carriage. Today we publish only constructive and technological proposal of the author. More than 20 years of experience continuous all-weather and all-season operation of my bike model-542 “Sport” issued in 1974, the total mileage of which amounted to about 100 thousand km, as well as analysis diary entries have led to the conclusion that the bottom bracket for reliability is in fourth place after floreina, driven sprocket and drive chain.
“Passenger car” combined with cargo trailer is an extremely convenient vehicle. However, it is not without flaws, which sometimes nullify all its advantages. In particular, significantly reduces the maneuverability of the car and it becomes almost impossible to reverse because the motorists unlike professional drivers a bad maneuver composite vehicles. Low passing “the Zhiguli” or “Zaporozhets” with a massive “tail” at the country and field roads. So, you need a simple and inexpensive malogruzovaja type scooter “Ant”, but with a closed cabin and higher payload. And best of all — based on motorcycle components and assemblies: this will allow you to register it as a cargo motor transport funds. Moreover, motor units are much cheaper car.
Limitless Russian expanses, but in winter their snowy immensity had become impassable for virtually all vehicles. That is why with the advent of powerful internal combustion engines, the designers started thinking about creating machines that are able to easily overcome this “snow-covered vastness”. The choice of propulsion device for a snowmobile vehicle, it was a small caterpillar, wheel Yes auger. In combination with the supporting pillars, mostly with skis – at the beginning of XX century was built a lot of all kinds of snowmobiles. However, such machines did not have either the terrain or speed.
The boats, which we would like to introduce to the readers, it can be attributed to the category of small vessels. And how else to call a couple of universal self-propelled floats, which are easy to use and as gidroliz, and double pleasure catamaran. As can be seen from the drawings, each of the floats is a miniature boat with a power unit including battery, motor and propeller. Displacement of one float is about 140 kg, which allows not only to equip its power plant, but also allows for “skier” when you need to rely only on a single float, not fearing that he will go under water.
This small aircraft drew more attention to themselves at the Tushino international salon in June 1995. It differed from other such somewhat unusual layout. In conversation with its creators revealed that this design decision was made as a result of deep theoretical and experimental work conducted by the authors in the field of aerodynamic interaction of the wing and the propeller trikes. Learn more about your child we asked one of the designers of the project “Comet” and the pilot S. Sitdikova.
