Saturday, May 30, 2009

Re: [Electric Boats] Re: Electric power for over 30'



Thanks Keith:
My plans are to do some extended blue water cruising with my first
officer. (20 year old daughter)

The dual motor/dual controller I feel at this point is a safety issue.
So yeah.
I was looking at 2 of the 8 HP DC motors but will re-consider.

My 'Diesel Credit' in weight i have been told with V-drive is around
900 pounds. There's lots of 'stuff' hanging on that boat anchor. (Big boat)
With the removal of the Diesel Tank, there may be more room than i need
and may need to add ballast in addition to batteries.
-Tom-


In a message dated 5/30/2009 9:10:47 P.M. Eastern Daylight Time,
aweekdaysailor@yahoo.com writes:

What are your expected sailing conditions (winds, tides, chop, etc). It has
a lot to do with how you size the system.

Based on my experience (Hunter 30 9800lb disp) I would go with one of
those dual-motor/dual-Based on my experience (Hunter 30 9800lb disp) I would
go with one of those dual-motor/dual-<WBR>cont

Someone just posted on one for sale but I think the numbers (9KW @ 24V)
were wonky - that's probably the 48 or 72V max HP rating.

9KW is about 12HP - should handle most conditions just fine on your boat
as long as the batteries hold out. That's the real problem on larger boats -
your "diesel credit" in weight isn't much better than mine, but you need
more power, so you're either going to be heavy or have less range.

-Keith

--- In _electricboats@electricboatele_
(mailto:electricboats@yahoogroups.com) , "Tom" <iloveamercedes@ilo> wrote:
>
> Hello everyone!
> I know there must be a thread for powering sailboats over 30' with
electric motors. Can someone direct me to it?
> My sailboat is a Cal 35 Cruising. She is of 15,000 lbs. Displacement.
> I think this project would need around 35 hp. She has a 4-108 Perkins of
'Claimed' 50HP hahahaha!
> Anyway, with what little I know about this, I would need a bank of about
5 Golf Cart Batteries.
> I also want to utilize Solar Panels as well as a Gas Power Generator.
> So let me know how screwed up my ideas are so I can get an idea of where
to start here.
> Thanks
>

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