Hi Andrew,
This sounds like it could generate an accurate performance prediction. Can you walk us through the process with an actual example? Let's say that I wanted to convert a Newport 28, how big of a motor should I be looking for? Try to keep it simple, since we provide these calcs to assist people that have little to no technical background that are coming here for the first time.
Thanks,
Eric
--- In electricboats@yahoogroups.com, "Andrew Gilchrist" <andrew@...> wrote:
>
> Watts per ton figures are a bit academic unless you use torque per ton which is far more relevant for slow speed projects.
>
> However, the first stop is to establish how much thrust you wish to generate and the speed at which the boat will travel.
>
> Once you have those figures you can make an informed guestimate about the motor which will run efficiently while providing the torque you need; to turn the prop at the rpms required to produce the desired thrust.
>
> Then you can estimate what sort of battery bank capacity you will require to run the time/distance you desire.
>
> Andrew Gilchrist
>
> www.fastelectrics.com
>
> 612 4982 5481
>
> Australia
>
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