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At the risk of offending both ewhel and
donaldbaer please remember that this dialectic or collision
of ideas reveals advantages of both motors. Both
ewhel and donaldbaer are correct. The insufficient
words used to describe complex devices cannot convey
adequately the advantages that both ewel and donaldbaer are
really referring to. Some of us, your audience, need to
see diagrams (can either of you provide these?)
<br><br>I surmise that donaldbaer's totally enclosed motor
is not completely sealed/pressurized but that it is
vastly superior to regular motors that flow vast
quantities of air over the armature or windings for cooling,
and that it could be sealed up. I am particularly
interested in doing this with submerged motors in my
"electric log" boats, or by adding fins that contact the
outer surface of the boat hull for cooling. At the same
time, ewel's motor seems to be rather efficient and to
require less cooling, as well as less moving parts for at
least some function(s).<br><br>The market that we are
watching develop is (will be) very complex and fractured.
It is easy to believe that both motors are
absolutely perfect in different areas of that market.

OOOOps! I didn't mean to start a fight! I
appreciate ALL input and help, in this new and exciting
world (new to me, at least!) I do have problems
understanding why an electric motor for a boat should cost MORE
than a diesel replacement!<br>I would have thought
there were all kind of financial help and suppeot
available to developers of any device improving the
environment? <br>You guys: Why not get together and post good
links in this club to manufact. of motors, a page of
evaluations, what ever would help in the research for the rest
of us. Off course EWHEEL will will try to promote
his product, but an open and positive discussion
about available options would be more productive. All
manuf. I have heard from are making "the best" on the
market, and that leaves me more confused than ever! Right
now my only way of choosing is counting my pennies
and see what I can afford. Haven't even been able to
decide if it should be inboard, or if I should make a
well for an electric outboard! Or maybe I should just
get a pair of OARS!<br>If anybody in this club have
the knowledge, time and interest, I'd love to see a
good evaluation of products, including the biggest
secret: The price! That eval. could be the biggest
promotion of electric drives for boats, something all of us
are interested in.<br>It's a jungle out there, and
I'm getting lost and discuraged!

"I do have problems understanding why an electric
motor for a boat<br> should cost MORE than a diesel
replacement!"<br><br>Not a bad question, Kirsti. It doesnt have to. Mine
cost about 45% of the cost of a similarly sized
diesel.<br><br>Its easy to define your "needs" so that only very
expensive, limited production components can meet them.
Youve self-defined a very expensive system. If you can
define your "needs" to suit an already existing,
mass-produced technology you can save lots. <br>Are some of the
products and systems discussed on this list "better"? I
dont know for sure, but I certainly suspect so. But I
also believe the law of diminishing returns kicks in
pretty rapidly: 10% "better" may cost 100% more, 30%
"better" may cost 1000% more and that last little
increment of "best" maybe only the government can afford.
If you really NEED the little bit better, then you
will simply have to pay the hefty premium. But often
people confuse "desirable" with "necessary". <br><br>I
just bought a 38lb thrust (I think that works out to
about hp electricright?) electric outboard at Costco
for $134.95. How can they do that? Answer: thousands
of fishermen use these things and they are
mass-produced.<br><br>36V golf cart components are quite cheap up into the
6-10 hp. range. So are the batteries and accessories
that go with them. How come? Same reasonlots of
people wanting to use the same product.<br><br>So my
advice is to look hard at the existing, off-the-shelf
technology and look hard at what you realistically demand
from the system. A great many of us, I think, could
function quite happily with systems that are a fraction of
the cost of some of the more esoteric technologies
and those systems are more easily serviced, more
easily repaired and more easily replaced when the time
comes.<br>Larry

THANKS!<br>Kind of what I was hoping for: The
possibility to buy the "pieces" (whatever they might be) as
my economy would allow me. To me that looked like
another HUGE benefit of going electric...the chunk of
batteries one day, the motor another eehh...month, then the
controller e.t.c. instead of forking out $7-10.000,- for a
diesel, and:VOILA!<br>I've installed a diesel myself
once, and still don't know how I had the guts to do it,
but it went fine, was easy, and was only about a week
of sleepless nights. I had by my side two 3" thick
manuals, full of coffee-stains, but finally the thing
turned over and RAN. Stupid me, I sold the boat!<br>So,
here I am, having to do something similar to this
"new" boat...but very different! Because I won't have
those 3-inchers by my side to leaf tru when all the
questions pop up.<br>I have realized, that I'll have to
rely on somebody with electrical engineering
experience. Darn!<br>I feel a littel bit like an easy
mark.<br><br>Your advice is good, and looking back on 16 years of
cruising, several years of those with old Gray-marine
gasoline, halfway retired gasoline engine (that was the one
that got retired in favor of a new Yanmar) I don't
need much. It's a sailboat, and I'm in no hurry. I'll
heave to if I can't make port in daylight. It's nice
out there under the stars anyway! But I DO need some
little thing-a-majobby to push me into my slip. And it
WOULD be nice to know that I could flip a switch and
pull away from that reef not charted!<br>Modest
demands, I'd say.<br>What do you think?

Kirsti you may find this link of interest as it contains pricing on a couple of systems and a few interesting links.As a bonus they are cheaper than the diesel.<br><br>g'luck

Hi Gary,<br><br>Just joined, but have been following this thread. Where's the link?

Hi Gary.<br>Couldn't find the mentioned link- please try to post it again.<br>kirsti

Sorry about that my isp shut down just as I posted that message.So w'ell try again. <br><a href= target=new></a> hope that worked.