Something to think about, a heavy, slow speed, high torque electric motor, will likely cost less than an exotic motor like this one, which will need a heavy transfer box for a slower speed, high thrust prop.
A UAV will have a somewhat free cooling system, where a slow moving boat will require some kind of power robbing cooler system.
Any motion control catalog will show a good example of horsepower transfer, as compared to weight and mass of gears and shaft sizes needed to hold up to power applications.
This is what I think I have found to be consistently true, every time I thought I found some kind of loop hole. :)
It does look good and it beats the 10KW motor built for the GM Sunracer, which was the size of a soft drink can and weighed about 7 pounds.
Ron
--- In electricboats@yahoogroups.com, Ben Okopnik <ben@...> wrote:
>
> According to the company, they're not yet selling it on the open
> market: they've built a number of prototypes, but haven't yet done
> all the tests they need to. But it's an interesting-looking gadget
> nonetheless: 95% efficiency, 7HP with a motor that weighs 1.4 lbs.
>
> http://www.launchpnt.com/portfolio/aerospace/uav-electric-propulsion/
>
>
> --
> Ben Okopnik
> -=-=-=-=-=-
>
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