Reversing Entropy · video

What this video covers

Paulo converts the diesel-powered sailboat Starry Night to a diesel-electric hybrid system to provide redundant propulsion, reduce engine wear during short maneuvers, and lower fuel consumption.Watch The DIY installation adds an electric motor to the existing propeller shaft via a pulley system, controlled by a custom-programmed motor controller, a touchscreen interface, and a potentiometer throttle.4:06 The total cost for components—including the motor, controller, touchscreen, and pulleys—remains under $1,500.4:58 The system allows for both electric propulsion and regenerative charging while under sail.0:40 During testing on the Rio Guadiana, the electric motor provided 3 knots of speed in 40-degree Celsius heat without heating the cabin, while drawing power supplemented by 400 watts of solar input.9:22 The controller includes an automatic standby feature that prevents battery overcharging once voltage reaches 27.5 volts.8:21 Future upgrades include water cooling for both the motor and the controller to improve efficiency.10:39 The electric propulsion successfully maintained vessel maneuverability during previous diesel engine failures.1:56

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