large scale rc boat 80

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Here the thid test of my rc boat, finally after 20 years finished it with a brushless motor! The deck isn't finished yet, it will be a fire fighting boat. An brushless motor pump will be installed. - 2 meter, 80 kg - suppo 7035/9 brushless motor - fusion 120 A controller - for the test: 2 car batteries and 1 motorcycle battery. (36 V) Later i will install 3 AGM batteries - speed approx 18-20 km/h - drive with synchronous belt - propeller custom built 5 1/3"* 6 1/2"stainless steel