Thanks, Jim. That's what I thought too. These kids should be congratulated.
From: luv2bsailin <luv2bsailin@yahoo.com>
To: electricboats <electricboats@yahoogroups.com>
Sent: Fri, Nov 25, 2011 5:13 pm
Subject: Re: [Electric Boats] Low cost wind turbine
Jim
--- In electricboats@yahoogroups.com, Bruce Gillett <affordableacadia@...> wrote:
>
> Let's see. We're comparing a wild idea about powering a boat with
> electricity with one using stinky throat choking diesel because diesel or
> diesel hybrid is better for people with big sailboats who want to make the
> transition to something sort of, kind of, less destructive to our planet.
> Or what? Our problem with range, weight and charging should be seen as
> bumps on the road. We will get there. Those of us who set up the electric
> systems with all their imperfections realize the answers will come. In the
> mean time we will use our boats to the extent we will be able without
> whining about shortcomings. Those who try to sell these systems to the
> general public should instruct them that they need to be ready for a wild
> ride.
> On Tue, Nov 22, 2011 at 4:13 PM, Nanci <nancishouse@...> wrote:
>
> > **
> >
> >
> >
> > http://www.news-journalonline.com/news/local/east-volusia/2011/11/08/embry-riddle-students-develop-low-cost-wind-turbine.html
> >
> > Nanci
> >
> >
> > -----Original Message-----
> > From: Mark Lockley <lockleymark1@...>
> > To: electricboats <electricboats@yahoogroups.com>
> > Sent: Sun, Nov 20, 2011 2:41 pm
> > Subject: Re: [Electric Boats] Re: pulling the plug...
> >
> >
> > Hi Eric,
> >
> > do you feel a hybrid system - battery bank and small diesel D.C. generator
> > is inneficient or innapropriate for a 40ft power catamaran - lets say for
> > the relaxed extended cruiser market that want to be less dependant on
> > diesel fuel and have the ability to sit and wait between passages ?
> > obviously a paower catamaran will have a larger roof area available for
> > location of solar especially if it was originally designed around the
> > hybrid concept. your comment appreciated.
> >
> > Thanks Mark
> >
> > *From:* Eric <ewdysar@...>
> > *To:* electricboats@yahoogroups.com
> > *Sent:* Monday, 21 November 2011, 5:54
> > *Subject:* [Electric Boats] Re: pulling the plug...
> >
> >
> > Hi Kristine,
> >
> > I saw your first post, but I didn't respond because you're discussing a
> > project that is vastly different from the projects that I have been
> > involved in. Unlike many online forums, most of the people here don't just
> > make up answers, they will only try to answer questions that they have some
> > background in. I figured that you were more interested in experienced
> > answers rather than armchair conjecture.
> >
> > Over the yeas here, I have posted a few times about my opinion that
> > battery powered electric drives are rarely suited for power boats (very
> > slow speed canal boats and "narrowboats" are an exception). When hybrid
> > systems are suggested to overcome the lack of range, I have stated before
> > that I don't really see the benefits of adding so much extra cost, weight,
> > and complexity to a regular diesel system.
> >
> > As a strong proponent for electric drives, even beyond boats, I feel that
> > they are only appropriate for certain use cases. In some situations, they
> > can be an excellent answer and in many situations I feel that they are not
> > worth the considerable compromises. I my mind, battery electric drive is
> > well suited for sailboats because the auxiliary engine is only needed
> > occasionally.
> >
> > So I'm not a sailboat snob, but in this forum, they represent a very
> > different set of requirements. When I read your original post, I thought
> > that it would be better for you to hear from people that might support
> > parts of your plan, rather than me picking the plan apart, piece by piece.
> >
> > But basically for an electric drive system, I feel that stern drives,
> > saildrives and regular marine transmission all add too much driveline drag
> > and will decrease the efficiency of a marginal system significantly. I
> > would always recommend a straight drive shaft. Props seem to work much
> > better if they are exposed, away from hull turbulence. I think that the
> > availability of a 72V alternator is the least of your worries.
> >
> > The one type of hybrid that does make some sense to me, if one has the
> > money to execute it, is to power the boat with an approriately sized diesel
> > system. Then for slow speed "silent running" install a completely seperate
> > outboard based electric drive using Torqeedo products. I don't know how
> > well a pair of Torqeedo Cruise 4.0s would push your 40' boat, but that
> > would be my personal line of investigation. This plan would allow one to
> > experiment and collect objective electric performance data. If the electric
> > drive ended up not meeting your expectations, the entire electric drive
> > system could be sold at a small loss to someone with a completely different
> > project, leaving your boat with a completely effective diesel drive system.
> >
> > So it's not thet we're ignoring you, it's just that you brought up a
> > project that is a long ways from most of the experience on this board.
> >
> > Fair winds and smooth seas,
> > Eric
> > Marina del Rey, CA
> >
> > --- In electricboats@yahoogroups.com, "Femm" <femmpaws@> wrote:
> > >
> > > About a week ago I made a post asking a number of questions about
> > setting up a system on a power boat.... And just like with most sail
> > boaters no one said a thing. Not even a "Hey nice idea" or "Gee that's
> > lame." Over the years of working on fishing boats and owning a power boat,
> > sail boaters show us the finger... TILL they need help in a hurry.
> > >
> > > I understand this group is made up of mostly sail boaters and I see you
> > are no different than the ones I have had to deal with out on the water.
> > >
> > > I use to work at Marine Service Center in Seattle Wa for a number of
> > years and any boat I worked on I gave the same level of detail to each one
> > to make sure all repairs I did were done right. I didn't care if they were
> > a sail boat or a power boat things had to be done right.
> > >
> > > So I see no need to stick around this group. Later.
> > > Kristine
> > >
> >
> >
> >
> >
> >
>
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