Nick_Karatzides Posted June 10, 2013 Share Posted June 10, 2013 1/18 scale Jukka Tervamäki Engineering JT-9T autogyro scratchbuild Having tried my (suicidal) virgin 40 minutes flight experience with a friend's homemade autogyro during my summer holidays with him on flight controls and me on the passenger's backseat, I can surely say that you really feel like a bird, sensing even the slightest airwave or gravity accelerating change straight in your floating stomach. As soon as I safely stepped on solid ground again and returned back home in one piece, I felt the iresistable temptation to try a 1/18 scale autogyro scratchbuild. The following article is to describe step by step the 1/18 scale Jukka Tervamäki Engineering JT-9T autogyro, designed by Mr. Jukka Tervamäki and currently flying by ultralight aviators around the world keeping the Mad Max II GyroCaptain's (aka Road Warrior) spirit alive! In the photo below, Mr. Jukka Tervamäki, with his latest (at that time) creation of the JT-5, which was a predecessor of JT-9, which I'll try to represent in scale. The basic JT-9 autogyro concept is about a tractor gyro design with good aesthetics and performance with fairly low power. A 1.7 m diameter 2-blades propeller is powered by HKS 700 or Hexadyne Aviation P60 diesel engines, both delivering about of 65 hp at 2400 rpm. The fuselage of the JT-9 is of normal steel tube construction covered with dacron fabric. On the other hand, the JT-9B model is equipped with an electric motor instead of a diesel engine, with only difference the 3-blades propeller and wider front cover to house the battery packs onto both sides of the fuselage. The model I'll try to build in 1/18 scale, is the two-seat trainer (as for the "T") JT-9T model, equiped with diesel engine & 2-blades propeller made by carbon fibers. Having the basic blueprint line diagrams in hand, it was easy to convert them into 1/18 scale with a photocopier and I began the scale model building, starting from zero using 0.25mm styrene card and plastic sprue. To make the construction look more interesting, I decide to build the model in a way that airframe should look like cutaway side opened and let cockpit detail be easily observed. In the following pictures, the real (one-seat) Alex "GyroBeast2" Lameko's autogyro JT-9, during the successive stages of building. Link to comment Share on other sites More sharing options...
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