Sunday, January 26, 2020

Re: [electricboats] Solar Electric Boat Thoughts

I have a 20' aluminum pontoon powered by a Minn-Kota eDrive (2hp) 48 volt four 12 vdc lead acid batteries. I haven't measured the speed, but at one-half throttle on the speed control, the motor draws 11 amps. I would describe the speed as a "brisk walk". At full throttle, the motor draws 39-40 amps and there is certainly not a doubling of speed. Like others, you notice a lot more noise and splash around the stern. Note, I have no idea what the specs on the stainless steel propeller are, but the pitch is very shallow. With lead acid batteries, endurance at half throttle is about 7 hours, full, 1.5 hours.
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