All wheelchairs domestic production have a primitive manual transmission.“LETRAN” COMES TO THE RESCUE
All wheelchairs domestic production have a primitive manual transmission.Design
All wheelchairs domestic production have a primitive manual transmission.ELLIPSE VS CIRCLE
To use a bike instead of round sprocket Ellipso suggested in 1892 Professor V. Prusakov. He decided to put the rods along the minor axis of the ellipse that has allowed more efficient use of the power of the cyclist. Experiments have shown that even an inexperienced rider on a machine with the elliptical sprocket expends energy approximately 30% lower than on moving with the same speed filemashine with a round sprocket. And according to the American engineers, the use of oval zubchatki increases the average speed of a cyclist by about 14%.
TRUCK TENANT
Transform an old truck motorcycle IZH-type I was going for a long time. At first I wanted to make something like a scooter “Ant” (like the truck, by the way, once told a “M-K”). However, the design was unreasonably heavy and bulky. And besides, it needed a massive differential or, in extreme cases, overrunning clutch, and to build all this in the country, in a home workshop, it was pure utopia.SCHOOL AIRCRAFT (PART 2)
In the previous issue of the journal “modelist-Konstruktor” readers acquainted with the design of the aircraft “Cree-Cree” of Michel Colomban, who received a truly worldwide fame. According to many aviation experts, aircraft types “KRI-KRI” close to the limit of miniaturization, while some Amateur designers are trying to create models of even smaller size. However, when reducing the size of the aircraft becomes more dynamic, increasing its angular speed, the movement becomes korotkoperiodnye, causing reduced reaction time of the pilot action on the rudder. And at some point it may be insufficient for normal driving.“YAUZA” – PASSENGER CAR FOR CITY
“I intend to build a car for wide use. It will be large enough so that it will fit the whole family, but small enough that one person could operate it. It is made of best material and designed in the simplest methods possible in modern technology. Despite this, its price will be so low that every person receiving decent content will be able to buy a car to enjoy with your family, relax in the open fresh air.”
What does a mini-tractor “Ant”? What lies behind the pleasing to the eye successful?START INTO THE WIND
Mount klementieva in Koktebel — a place special and wonderful in their own way. Fans of soaring rightly consider it the cradle of Soviet gliding, nascent in our country in the distant twenties, and hang gliding, the appearance of which happened before our eyes in the seventies. Today, at the turn of the new decade, the slopes of the legendary mountain was chosen by fans of the new aerial sports — paragliding: so, relay the makers of ultralight aircraft continues.ON “WIND” WITH THE WIND
Little micro-car “the Breeze” was created three years. It was conceived as a double jeep with a canvas roof, flat windshield, three doors, the side from which the glasses had not. A year later, the car was put on upgrades.A WINDSURFER… WITH OARS
Board sailing has gained enormous popularity. More reservoirs in the summer “bloom” her bright triangles. However, in calm weather, the wind and their sails are on the coast are mostly idle. And then athletes should remember about one more wonderful kind of water sports — rowing.
“JEEP” FOR THE TWINS
The “toy” industry is developing in exactly the same way as “adult”, and tries to use it to create new and new designs of many of the achievements of modern science and technology. This applies particularly to those machines, who can carry a small car owner.
