With all the advantages of fiberglass hulls for model rockets the traditional process of production is highly labor-intensive and unsound. Meanwhile, the conversion gave the modelers a new and very interesting material is heat resistant fiberglass gasket STP-4. It is used widely and, having a small official shelf life, often charged and often goes to the shops “Junior technician” or “Do it yourself”.
AVOIDING THE CURVATURE
A roll of soft rags or foam rubber, emery paper wrapped, simple and perfectly working device for sanding curved surfaces, whether wood or metal. And the same skin in combination with two plates in it, fortified at a right angle to each other, help out in cases when you need to sand the surface of Read more…





Developed in the circle of aircraft modeling






Firm “Gather of waggonfabrik” (better known as just “goth”) at the end of the 1930s, released the first batch of ten-seat amphibious gliders DFS 230 was developed in the German Institute for the development of gliding (Deutches Forschungsanstalt für Segelflug, abbreviated DFS) under the direction of G. Jacobs. At the plant “goth” production of the DFS 230 was engaged in engineer A. Kalkert. Taking a series of DFS 230, Kalkert thought on creating a larger glider capable of carrying 20 soldiers with full equipment, and oversized cargo. He had to have a large hatch with size approximately equal to the cross section of the fuselage, and upper wing. The cargo hatch designer decided to make a hinged tail of the fuselage, as the nose of the glider could get damaged when landing (which often happens). This entailed the use of twin-boom tail. This layout was previously known, but was first applied to aircraft of this size.
For a basis we took the road bike (with “women’s” frame), set on it a longitudinal beam of the two aluminum profiles-“parts” and fixed on the beam two seats with backs so that the first rider was able to pedal the front wheel drive and the second conventional chain drive the rear wheels. So we got a double bike with the same dimensions that and serial single. Sitting in the front seat rotations”t pedal for more drive, located in the center of the front wheel, supports the balance, and also serves as the driver. The second rider works the pedals, resulting in the rotation of the rear wheel while sticking the handles on the back of the front seat.