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TESH drive system. http://www.ideaconnection.com/invention-success/Re-inventing-the-Screw-Propulsion-Vehicle-00249.html
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TESH drive system of Alexis Burdin. https://www.youtube.com/channel/UCG23FECq14KLzBL5Zc54bhA
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TESH drive system of Alexis Burdin, now sponsored by Licota Tools. The helical inflatable tires allow the screw to roll on hard surfaces. When deflated, the screws are well suited for mud or swamps. Reported by Claude Cathala. http://www.diseno-art.com/news_content/2014/12/tesh-drive-transformable-screw-propelled-vehicle/; http://www.unusuallocomotion.com/pages/locomotion/screw-propelled-vehicles.html; https://www.youtube.com/channel/UCG23FECq14KLzBL5Zc54bhA
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Tyco Terrain Twister screw vehicle of Mattel Inc., 2004. The 2 pontoons could be not parallel and filled with foam. http://www.scale4x4rc.org/forums/showthread.php?t=55016; https://www.youtube.com/watch?v=gqFh9H-H4Vg
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ZIL 4904, amphibious screw vehicle. http://vk.com/wall-59999425?q=%23Альтернатива
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Home-made Screw Vehicle by Nic Kindrachuk. It is a very interesting and rare construction. Nevertheless, it seems pontoons should be larger diameter and chains should be protected against mud. Congratulations ! Long live the next model ! https://www.youtube.com/playlist?list=PLsB5wii8fITsdqHYeuzk5uWiRVzFnL7uv
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