Still, the vast majority of models of submarines with rubber motor class EL-500 (500 mm in length) are built on the same scheme. However, the adopted version with the detachable bow and stern parts of the hull has a number of disadvantages. No matter how carefully manufactured parts, the line connectors on the polished surface of “skin” still stand out, which spoils the appearance polyopia. Students involved in a circle of the second year (namely, they calculated the design of class-EL), not under force independently to build the model without the constant help of the leader of the group.
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The electronic device described in mi readers, you can install on the toy, equipped with a separate drive for each caterpillar: tank, lunar Rover, Lunokhod. The model moves with headlights on in a darkened room, and set PA her the photodiodes capture the reflection of the headlights from obstacles. The appropriate commands to the drive engines on the basis of the received data takes the logical unit. Here’s how it works.
Each individual Builder wants his house was not only beautiful it’s durable, but cheap. Design and materials of the walls is about a third of all costs. Is there the possibility of saving? I propose to make the wall monolithic, lightweight concrete-filled; the role of the formwork perform asbestos-cement sheets, they also then have to serve as a lining. The cost of these walls is lower than the brick, and the use of lightweight aggregates (sawdust, slag, reed) will improve their thermal insulation properties. In addition, they can be more subtle and light. In the end, will reduce transport and construction costs.
Regular readers of our magazine are already familiar with the Kaluga Amateur designer V. N. Arkhipov, author of easy and productive tillers (see “M-K” № 6, 1982). However, Valentin Nikolaevich considers that it is not so simple as it may seem: to walk on the plowed land, driving a two-wheel tractor and trailer at the same time, is quite tedious and is not for everyone. That’s why Arkhipov undertook the construction of a mini-tractor with four wheels that “ride” him: to various agricultural work, while not on m itself. The attempt failed, and the light appeared a kind of chair on wheels — tractor “Kaluzhanin-14”. Not so long ago, the author had submitted it to the popular TV show “you can” and received the approval of the competent jury Today at the request of viewers and our readers the journal publishes drawings on which you can build the same “iron horse” helper of your household and garden plots.
Every year the competition is less you can see modelers who runs the micro internal combustion manually, without the aid of special starter. Often using mechanical devices, electric starter with battery to use is not very convenient — too heavy batteries, and to recharge them is not always possible in “field conditions”.
In No. 1 of 1982 of the journal in the article “Truck changes his profession” was told about one of the most simple designs of garden carts on Bicycle wheels, with enough capacity and good duct patency. If you already have a similar truck, without much difficulty, you can quickly turn it into a bike trailer. So, first take a section of pipe with a length of 80-100 mm, with a diameter of about 30 mm. at one end drill a hole that matches the thickness of the seat tube of your bike, and the other perpendicular to it make two holes for M8 bolts and saw out through the groove. There insert a rubber strip (as shown in figure 1), for example, old tires, size 50×150 mm, both sides of which must be the same opening as the coupling device and the drawbar of the cart. Now assemble the hitch and reinforce the seat tube.
By the spring of 1943 in the fighting at the front emerged a qualitative leap in improving the combat capability of the German armored vehicles. There are new tanks Pz.Kpfw.VI “Tiger” with the 88-mm gun and a PZ.Kpfw.V “Panther”, which had 75-mm gun. For tanks T-34 and KV-1 to the red Army’s main opponents on the field of battle were T-IV with short-barreled 75-mm gun. 80-mm frontal armor easily able to get our armor-piercing shells.
