![]() power at max RPM given by their manufacturers. Motors (electric or diesel or whatever) generated their max. So if your boat, given an operation load achieves your desired speed with 250 hp outboard at the shaft (this is shaft-horse-power or SHP) you should generating 250 hp at the shaft with your electric motor based propulsion system. Converting between them is fairly simple (you can google it): 1 hp equals 0.7457 kW or 1 kW equals about 1.34 hp. Power can be measured in horse-power (hp) or watts (kW). In other words power is power whatever the source. The crucial part is that power generated by an internal combustion engine (gas, diesel, kerosene, whatever) is exactly the same as power generated by an electric motor. I am truly sorry if I bombing you with so many questions but I could not find any other source of information’s. ![]() What about the controller, batteries, charger, e.t.c. The torque, rpm stays the same as the diesel or gasoline (inboard or outboard) engine? or only from the calculations to convert from one type of engine (diesel or gasoline and inboard or outboard) to another (electric) I am safe. You gave me the type so I can estimate the kW of themotor from the horse power of the diesel or gasoline (inboard or outboard) engine.ĭo I need to estimate all that : a) The weight of the boat, b) the space where it moves (the sea) which has different composition than the road, c) the waves, e.t.c. My question is the following, does these mathematics types are the same and for the EV Boat conversion? Ah per mile * miles per charge needed * 1,20 = ah batteries pack at 144 Volt. I am sorry for the delay of my answer and thank you for your help.įrom my search I found these mathematics calculations for an EV Car Conversion:ġ) Calculate the motor: N = /1000 = Kw.Ģ) Calculate the HP: HP = Volt*Amps controller / 746 = ![]()
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