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Voltage is most often referred to on the sites as simply ‘Voltage’. We have noted it with an asterisk * when we have done this. IN THE TABLE, when no HP equivalent has been provided, we have used the continuous power and multiplied it by 1.3 to indicate HP equivalent.When manufacturers have provided an HP equivalent we have used that. As noted above, there is a lot of leeway in how this is interpreted. HP is ‘HorsePower equivalent’ so that you can get an idea of the power of the motor in comparison to a HP rating you might be more familiar with. We have indicated what the measurement is, although in the table we have used peak power as equal to input power and continuous as equal to output. Some quote only peak power or continuous power, some quote input power and output power. Power Ratings – measured in kiloWatts kW power rating quoted is taken from the manufacturer website. We have not given comparisons to Imperial/US measures except in ‘horsepower equivalent’, which is in itself not standardized due to how the power is measured by each manufacturer. The table can be searched with any keyword – manufacturer, for instance, or can be sorted by any of the columns: Peak kiloWatt power, Continuous kiloWatt power, estimated HP equvalent, Voltage, Dimensions (Length, Width, Height), Weight, RPMs, Type of motor and cooling system (air, liquid, water), and whether it is regenerative – capable of recharging when the boat is under sail propulsion.Īll measurements are in metric. If there are many models, we give a range from without lining the specs up with specific models. If there are 3 models in the line, we will give the specs for each model with a comma in between. For the specifications we have tried to make it a user friendly as possible. The motors are organized in alphabetical order by manufacturer, then by model line. If you are going to be using the table extensively the page is best viewed on a computer rather than smartphone or tablet. At the bottom of the page is a Sortable/Searchable Table that lets you compare motors easily.
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At the moment I think you can find solutions for up to 80-100 hp and limited range, though I might be wrong here.The top of this web page is an Illustrated Guide with photos of the motors and specifications to the right. There are a couple of websites that sell motors and all the other equipment for marine applications but their output is much much less that your 250 hp requirement. RPM and torque requirements are closely related to your propulsion drive, transmission and propeller but regardless your power source, for the same propulsion system and for the same performance, they should be the same.Įverything else, such as controllers, batteries, chargers will be determined by the motor manufacturers. 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 =