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https://www.rd3d.cz/trkac/ Presentation of the prototype of the new Czech racer. Technical details, gadgets and operational experience. Chapters: 00:00 introduction 00:35 materials 01:47 patterns and patterns of runners 03:45 description of the knock valve 04:57 turning the water supply 05:38 aeration taps 05:48 connecting pressurized water 06:15 draining the working water outside the runner 07: 32 flooding of the nozzle 09:15 first launch and tests 10:47 demonstration of power regulation 11:28 demonstration of aerating the wind turbine 12:42 launching of the suction hole 13:01 connecting the waste elbow at the outlet 13:26 demonstration of aerating the Novotný rake 14:20 watch out for frost 15 :22 noise