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
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--- In electricboats@..., 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
