Eric, those hydro generators that we discussed a couple of months ago are expensive as you said, but the idea is a good one. The same unit (close anyway) is used on several peddle powered water bikes and are quite efficient for propulsion. With some modifications the unit could be modified for a retractable hydro generator... worth some thought, better than $7/10 grand. The cost on the assembly is around $7/800 dollars... it's worth a look if someone wants to keep the generator portion out of the water...
Dave K
From: Eric <ewdysar@yahoo.com>
To: electricboats@yahoogroups.com
Sent: Fri, June 3, 2011 8:38:51 PM
Subject: [Electric Boats] Re: Siandra unplugged
Hi Richard,
We discussed those hydro generators a couple of months ago in this Yahoo group. I agree that they seem pretty cool. The two price references that came out of that conversation were either $7,200 or $10,000 per generating unit. At that price, they seem to be out of the reach of most of the people here.
Fair winds,
Eric
Marina del Rey, CA
--- In electricboats@yahoogroups.com, "Richard" <rwsandersii@...> wrote:
>
> Here it is, I hope the link works.
> http://www.velux5oceans.com/#/ocean-sprint-4-news/brad-hydro-power-sustainability/1902
> Richard
>
> --- In electricboats@yahoogroups.com, "Richard" <rwsandersii@> wrote:
> >
> > Mark,
> > I think the problem may be trying to use the propulsion propellor for the electrical generation. Brad Van Liew did a segment on his hydrogenerators for La Pengouin on the Velux 5 oceans race website. Let me see if I can find a direct link to it.
> > He has these small propellors that have a small hydraulic system to adjust the pitch. This may be too complicated and expensive for the average cruiser right now and the speed of these boats is very different, but there may be some applicability in the future.
> > Richard
> >
> > --- In electricboats@yahoogroups.com, "acsarfkram" <acsarfkram@> wrote:
> > >
> > > Hey Mike,
> > >
> > > I couldn't agree more, for me it would be depressing to go back to diesel or gasoline. Regen is a weak point(so far) and it seems a prop in an aperture is even more of a challenge. I can't shake the idea of a hydro-generator for regen on an electric auxiliary....
> > >
> > > Mark
> > > Santa Cruz
> > >
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