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%.
ELLIPSE VS CIRCLE
In the journal “modelist-Konstruktor” has repeatedly published materials on how to make stained glass for Windows or doors. All these methods are very effective; however, I managed to develop, I think, not less interesting.
Typically to achieve the necessary alignment of heavy fighting model of the micro retracts in the cutout of the front edge of the wing. This leads to some loss of strength and complication of manufacturing technology, and access to the engine for maintenance is much more complicated. So I had the idea to implement the idea of forward-swept wing is given in the “M-K” № 7 for 1988. Front and rear edge of the wing of the new models are made by gluing pine veneer (thickness of 2-1. 5 mm) on the mandrel with the subsequent cutting on a lathe to the required edge thickness. The bonding is conducted on the PVA. Mandrel is more practical to manufacture of chipboard, and in the mounting position and clamp the veneer pack to apply a lacquer coating to facilitate removal of the part after drying.
Process modifications and finishing of the photograph necessarily involves pruning. It is also necessary when a label image on a piece of cardboard for participation in exhibitions. The operation itself is simple. But if it is executed carelessly, it may decrease the impression of a photograph, despite its artistic merit. Truly “a spoon of tar spoils a barrel of honey”!
What tents are not released industry! Single and multi, winter and summer, canvas and nylon… nevertheless, tourists continue to actively develop and produce their own versions. And this is understandable: after all, a good, comfortable tent will not only protect from the weather, but also allow you to fully relax, to rejuvenate after a hard day transition.
We continue to acquaint readers with the simple designs of garden furniture offered by Polish magazine “Prob myself.”
Morning gymnastics, running, lignite winter and summer Hiking trips, Cycling is an effective means of health promotion.
If you are on a family Council have decided to allocate the child in the new apartment though the smallest in area, but still separate room, then take the time to make it familiar to an adult wardrobe, a couch and a Desk. Try starting with a look at children in the eyes of a child and determine what he expects from his room. A comfortable bed or a large wardrobe! This, of course, important. But…
Readers rezinomotornaya a replica of a historic aircraft “Moran-G” in which famous Russian pilot P. N. Nesterov first in the world made air RAM .The model was created in two versions — “full” copy with a boxy fuselage and polyopia with a contoured fuselage. To achieve a satisfactory flying qualities, had to go to small deviations from the proportions of the prototype aircraft. The models are made entirely from common materials, the main of which was melkosortnyj packing foam density of 0.05—0.06 g/cm3, chopped termolabil for plate thickness 0.5—1.5 mm. By weight parameters of the model are comparable to the best balsa models. To make their students of 6-7 grades. Choosing a simple plane as a prototype to copy allows to make emphasis in students ‘ work and not to simulate individual elements, and the manufacturing quality of the device.