Hmmm. I just checked the Hunter website and it says the Hunter 27 waterline length is 23'7". But that's just a minor detail... It doesn't change the general results much.
But we're obviously on the same page. BTW, the Elco drive certainly looks sturdy, I wonder how much that unit weighs. There's a picture on the ELCO 27e brochure that is linked to the Hunter 27 spec page on the Hunter US website.
Eric
--- In electricboats@yahoogroups.com, David Goldsmith <suntreader@...> wrote:
>
> I love it when you lay it out for us. I'd like to throw in a few points
> however. The Catalina 30 actually has a shorter waterline, its listed as
> 25', while the Hunter 27 has a full 27' waterline and the Hunter's
> displacement is listed as about 7,600 lbs, while the Catalina weighs in at
> 10,200. The current Hunter 27 really isn't in the same class as the older
> Hunters of that length or the Catalinas. Its more of a stretched 25 footer
> than a roomy cruiser.
>
> Those other numbers won't dramatically affect what usually works out to a
> lot of factors like how the boat is loaded, the condition of the batteries,
> and the weather and sea conditions. I wouldn't put it past them to be
> quoting range and speed that assume you're sailing down hill:)
>
> I would assume, but take this with a grain of salt, that Hunter and Elco
> would have this set up very well optimized and worked out. They've both got
> extensive experience and complete control over every component so they
> should be able to make a good show of things. We'll know as soon as someone
> on the list buys one, any takers?
>
> David
>
> On Wed, Nov 24, 2010 at 3:26 PM, Eric <ewdysar@...> wrote:
>
> >
> >
> > David,
> >
> > I ran some quick numbers to see if 20 miles at 6kts is reasonable from that
> > battery bank.
> >
> > 214Ah @ 72V = 15.4kWh
> > 80% depth of discharge = 12.3kWh usable...
> >
> > So I would believe 20nm @ 4.5kts from specific info that you posted from
> > Hunter. That is very good performance from an electric conversion of this size....
> >
> > Of course, these are all estimates based on experience collected here and
> > with other electric conversions. Hunter's results may vary, the only
> > effective way to find out is to put one of their 27e's through its paces.
> > Let's hope that someone here buys one and gives a detailed performance and
> > efficiency report.
> >
> > Fair winds,
> > Eric
> > Marina del Rey, CA
> >
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