Today we want to introduce the adherents of model shipbuilding with the successful development of Czechoslovak athletes. Interestingly, they have created a small motor boat “Smaragd” is designed based on the highly successful hull of sports “train” subclass E7 (construction of which our magazine introduced to its readers in No. 5 of 1992). I hope you will be interested to know how the target pure sports car can turn into a spectacular polyopia. By the way, except for the external transformations, the new model simultaneously received and other power equipment much more affordable for the average modeller. Long-term experiments allowed the authors to find the optimal combination performance.
As in a purely sports version, most body parts are made from balsa. The use of scarce wood is justified, because at small speed model each saved gram mass of the shell can be transferred to mass energy (batteries). For those who can not find the balsa, we can recommend technology vyklicky power shell housing made of fiberglass, is well known among modellers. However, the properties of the body, the more close to the balsa, can be achieved with the available materials conventional paper or cardboard. Because balsa is very light, only by itself: most of the advantages of this wood is lost after finishing the internal and external surfaces. In the case of, for example, the use as plating pre-glued with liquid epoxy resin panels of two layers of paper of average quality you get from the material is not only water resistant (resin impregnates the paper through), but are ready for painting without additional putty and sanding. Not only saves weight, but also dramatically reduces the complexity of the model as a whole. However, similar advantages have and fibreglass body. However Vilana technology is very demanding on the professionalism and experience of using it, and make full advantages of fiberglass are manifested only when high precision compliance of the subtleties of the processes (which, unfortunately, in the practice of modeling the average level is almost impossible).
Based on the foregoing, when reading the recommendations for the production of model boats you will be able to make their own adjustments on the materials used. We give the original description zelenoborskoe option.
The housing is assembled on a flat Board bench on the classic version of the “keel up”. Frames one through five and fore end are cut from regular plywood with thickness 2.5 mm. the Frames connect to the keel rail cross section 2×6 mm and four stringers cross-section of 4×4 mm (pine). Between the frames 2 and 3 are also spacers of strips 3×3 mm. the nasal cavity of the housing until the fourth frame is filled with foam. Finished the frame body is sheathed with sheet balsa 2 mm thick. Outer surface of the plating is polished, and the whole interior, including parts of the carcass, after removal of the housing from the slipway covered by a two-component synthetic varnish. At the upper edge of the sides is glued on the casing rail (RUB rail) section of 2×4 mm.