John,
I've been toying with that "pivoted oscillating fin" idea as well, sort of like a sculling oar in reverse. Haven't got around to building a prototype yet, but it might be something worth pursuing.
Jim
--- In electricboats@yahoogroups.com, "John Green" <v_2jgree@...> wrote:
>
>
> Hi, Ben, I agree, a real winning piece of thinking - I have to admit
> that 'no' was my first thought too re a water powered version.
> However, as water has greater mass, the 'belt' could be extremely
> smaller, and the stroke maybe larger (or not) to span multiple coils
> maybe, and possibly not be a belt at all, but a pivoted oscillating fin.
> The original idea seems very applicable to boats, in that it would be
> safe to leave unattended, and hopefully would be fairly silent, added to
> which, one frame could support several belts.
> Footnote- As for ram pumps, I lived in a UK hamlet that had one, and the
> clicking noise was heard a mile away. So, don't even go there :-)
>
> John
>
> 2.4. Re: Low cost wind turbine
> Posted by: "Ben Okopnik" ben@... pectus_roboreus1
> Date: Sat Nov 26, 2011 5:43 pm ((PST))
>
> On Sun, Nov 27, 2011 at 01:22:05AM -0000, luv2bsailin wrote:
> > It's nice to see young folks thinking outside the box. They are the
> > future! That "fluttering belt" concept is ingenious! I love it. I've
> > been toying with various ideas for power harvesting over the years,
> > and never thought of that one. Maybe the concept could be applied in
> > flowing water as well...
>
> Just off the top of my head, the answer is probably "no". Air has little
> mass but (usually) moves faster than water; the windbelt leverages that
> speed to generate power. With water, the mass is usually the key factor
> - i.e., water wheels, dams, ram pumps (*there's* another brilliant and
> dirt-simple device for you!), etc.
>
> But hey, don't let me stop you. Great discoveries usually happen because
> someone didn't believe that "you can't do that." :)
>
>
> --
> Ben Okopnik
>
>
> --
> http://www.fastmail.fm - Email service worth paying for. Try it for free
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