thank you, thank you for your kind words.
Jan from what I have read the plane with two propellers are contrarotatorias project but in a three-blade engine test was that the material was not very reliable and was breaking the actuator bearing blade so was limited to two double helices not I'm very set in push or in physics of aviation but I remember that this double helix having a drive and makes the other breaks the turbulence produced by the propeller plane making the air more easily cut and gain speed, stall and be more economical in terms of fuel consumption but technically very complicated and easier to maintain than a breakdown occurs in operation.
paul what kind of salt is sea salt for you? Here the salt we eat is all we have a marina very coarse grained it is to cook (especially fish) and table salt can be fine salt or table salt, which is a medium grain but that if table salt must be iodised if not iodine dissolves very quickly, I always use table salt and half the fat, then also has to pull the paint in very thin layers of past and fast to paint such a wing of this device I gave 5 coats of paint, then I gave her 3 more to make the detailed equally fast, if it builds much the paint is dissolved salt, place the soy salt makes the salt is dissolved take the soy, but if we throw two coats of paint, but the first has dried will dissolve even the soybean, as well as table salt, iodine, salt, soy, hand paint fast and light to the whole and also review fast and light.
charles I'm told and here is a generalized line dictated by the scholars of the subject tube japan not very good painting and only with the mere fact of giving the contact of the engine fell and painting, I have not read that in any writing book or memory but I am just an amateur plastic paste-regional division of 3 cadets, no one, as the father of my wife, my father Andalusian him "Naide" I will not put in doubt, then uncataloged people and treat of illiterate, sad but true.
the fact is that from what I've seen this plane when the test tube ATAIU-SEA was a very regrettable, before being taken to scrapping.