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The JT-5B is a homebuilt autogyro, designed and built by Jukka Tervamaki from 1969-1973. Initially developed from the JT-5, the the JT-5B featured a 100mm larger propeller diameter for better efficiency, and a lighter rotor head. The single prototype model was sold to Vittorio Magni in Italy the following year, in 1974. The design was later named 455MT-5 and M-5, with more the modern revision being crowned the Magni M20 Talon. <ref name="schematic">Tervamaki, Jukka. [http://www.tervis.fidisk.fi/JT5builders/jt-5/Drawings/JT-51update.pdf, "Schematic of the JT-5B"]</ref> | The JT-5B is a homebuilt autogyro, designed and built by Jukka Tervamaki from 1969-1973. Initially developed from the JT-5, the the JT-5B featured a 100mm larger propeller diameter for better efficiency, and a lighter rotor head. The single prototype model was sold to Vittorio Magni in Italy the following year, in 1974. The design was later named 455MT-5 and M-5, with more the modern revision being crowned the Magni M20 Talon. <ref name="schematic">Tervamaki, Jukka. [http://www.tervis.fidisk.fi/JT5builders/jt-5/Drawings/JT-51update.pdf, "Schematic of the JT-5B"]</ref> |