开云体育

MotorGuide makes a 2 speed 22lb thrust for about
$80 that would propel your canoe at a top speed of
3.5-4MPH. I have devised a detachable rudder/electric motor
arrangement for canoes that's both attractive and functional
elimating the need for an ackward side mount. Contact me if
interested or if I can be of further help. Terry

Does anyone have knowledge of Where, When, How,
etc. of electric boat races here in the US? This is
something I'd like to get into, but am having trouble
finding out information on schedules, class requirements,
etc. Terry

I hae recently found information on a new type of
motor, the "electric wheel". It is sold by Solomon
technologies, David Tether, 301-274-4479.<br>It is designed so
that it will regenerate the batteries by letting the
prop turn while sailing. It sounds like it could be
just the ticket for the cruising sailboat. This unit
with a solar panel should not need any outside
charging. If your electricity usage is high, you may need
to add a wind generator as well. But, it sound like
you could go without any type of fossel fuel powered
generator to keep your batteries up. Has anyone else heard
about this?

Terry: In the recent past, there was some
high-speed racing in the Northwest U.S. with boats reaching
speeds in excess of 70 mph. I dont think they're doing
it anymore. Each year, Solar Splash, an activity for
college students, has races at Minneapolis. They do short
sprints and some timed distance racing. The boats are
specially built by the students and competition is limited
to them. The Electric Boat Association of the
Americas has tried some racing, but since the boats were
usually very different, there was no way to conduct a
fair competition. Usually, you could calculate who the
winner would be before they left the dock. The practical
solution, then, would be to come up with a one-design boat
which individuals could build to strict specifications.
Then racing would have more to do with seamanship and
skill than with battery size and number, prop size,
hull design, etc. etc.<br>I'm sure the group would
like to hear your comments on this.

Bill: I have talked with Dave Tether about the
electric wheel, and I am impressed by what he says. The
Electric Boat Journal ran an article about it last year
based on information provided by Tether. It's certainly
worth a close look.

kenmatthews - Maybe what the electric boat
industry needs more than racing events is some sort of
periodic expo where like-minded individuals could exchange
ideas and show off their own inventions. Speed is not
what electric boating is all about anyway. Or am I so
naive about the subject and this is already going on?

Ken:<br><br>Is it possible to get the old issues of the Electric Boat Journal? BTW I have sent you an application to join the EBAA, you should be getting it soon.<br><br>Bill

Has anyone done any experimenting on battery
recharging using a system other than solar or a gas engine
hooked up to an alternator? When a kid in the 50's I had
a small generator that attached to the frame of my
bike and turned by rubbing against my front tire
producing electricity to power my headlight. It seems to
me, something like that could be rigged up to
recharge a battery much like that of an alternator on an
auto???????? Terry

I am far from an expert, but the only motor that
I have found that would regenerate, that is
recharge the batteries as the prop turns due to sail power
moving the boat, is the Electric Wheel by Solomon
Technologies. The only caveat is that it will only regen at a
speed of 4MPH or greater. But this is readily
attainable in pretty much any sailboat with a decent wind.

Thank you, Bill, I'll look into it. I assume this
is the same Electric Wheel that's been mentioned
several times here recently. Haven't had time to read
everything. Don't happen to have an address or website to go
along with this information, do you? Terry

Phone# for Solomon Technologies is 301-274-4479. Speak with Dave Tether

1) I'm expecting some material,prices etc. for
the electric wheel, hopefully soon. I have spoken
with someone, who actually took a trip with the owner
on his sailboat, outfitted with the motor. He got so
impressed, that he decided to invest in the comp!<br>The
sailboat used for the trial run was 30-32' old
(and=heavy), and the reports was rather impressive. Lots of
details missing : how much battery storage, price, etc.
<br>I'll be back when I know some more details.<br>2)
recharging of batteries, I know of several options, apart
from the old umbilical cord:shorepower: Solar, Wind,
and at least one windgenerator manuf. AMPAIR, also
makes a dynamo outfitted with a propeller that is
either towed behind the sailing boat, or transom
mounted. Can be found somewhere under renewable energy on
the web. I don't know how effective this is, but have
heard stories about how sharks go for them...<br>I
remember well, how much drag on the bicycle these small
dynamolights put on, and how little light came out of them.
Technology should have improved a bit since our
childhood!<br>3) I've seen pictures of a boat w. el-motor, but in
that particular case the motor was connected to the
shaft via a belt. To me this seems a little flimsy, and
I don't like the sidewards pull on the shaft. Even
if triple-pulley is used (if one belt breaks, maybe
the other two will hold...)it still leaves the
problem w. the sidewards pull. The biggest advantage I
see with this system is, that you can get the motor
above spray and bilgewater-sludge...

Greetings! I have some questions that I'm hoping
some of you might be able to answer.<br>My intent is
to use one or two submersible electric motors, e.g.,
Minn Kota RT 70, 24V, to propel a smaller boat that
will have ample room for two people and two large
dogs. There are ready-built displacement hull launches
available, but they are "pricey" and the layout is not ideal
for our situation. I'm considering an aluminum
fishing boat with a planing hull (e.g., a Lund) as these
have the entirely open layout that I desire with high
freeboard and lots of room for the sea dogs.<br>I
understand the loss of efficiency compared to a displacement
hull compounded by the fact that electric motors are a
bit under powered. Does this make the idea
unworkable? Does weight play a factor? The aluminum runabout
would not weigh nearly as much as the fiberglass
launch.<br>I need to consider initial cost vs. usability. I
can carry extra batteries for cruises of six to eight
hours if necessary. Another possibility is the
"expedition" type canoe of long ago. The hull would work
better, but I also need stability as there is coastal
cruising (New England, primarily CT and RI)
involved.<br>Speed is not critical -- the boat will obviously not
plane with electric propulsion. Am I loony or this idea
worth looking into? I would appreciate any comments,
from anyone who has done anything even remotely
similar or anyone who has any suggestions.
Thanks!<br><br>Doug<br>taliesin@...

I guess this message is primarily aimed toward
those members who are builders or experimenters, but
anyone interested can enter into the conversation or
possible events. <br>I've been encouraged by a staff
member of the IEB to research the feasibility of having
events whereby builders and other interested parties
could show-off their latest innovations in electrical
boat propulsion. Not racing, since speed is not really
what electric boating is all about, but some sort of
competition to make the events interesting and fun.
Ideas,comments?????

Doug,<br><br>I'd look into sailboat
hulls,particularly catboats,as they are extremely wide for their
length and are true displacement hulls. In the size
you're after, I'd suggest a Marshall Saunderling. Try
www.catboats.org..... a classified listing.<br><br>Maybe you'd better
not mention your plans! Some sailors are "anti
powerboat"!!!!!!!!!<br><br>Good luck..........Frank

Do you have any idea about how much electric boat
info will be a the St. Michaels get-together?
<br><br>Do you think there will be an inwater
display?<br><br>My electric boat I discribed in message#20 is about
ready for display. It is running nicely now. I am
running at 4 knots (1/2 power) for about 8-10 hours and
5.5 knots (full power) for 3-4 hours. It handles
great and rides very well. <br><br>Hope to see you in
St. Michaels.

It looks as though there will be at least six
electric boats on display -- in and out of the water -- at
St. Michaels.<br>A workshop on electric boats will be
held on Oct. 2 at 10 a.m. Many of the most
knowledgeable EBAA members will be there, four of them on the
panel leading the discussion.<br>There will be plenty
of time for everybody to talk about his or her own
particular interest during the three days of the event.<br>I
hope you can come and bring your boat.<br>You can
pre-register with the Chesapeake Bay Maritime Museum (c/o John
Ford) at 410-754-2916.<br><br>Hope this
helps.<br><br>Ken Matthews

I am impressed!<br>The prices of electric motors
are something else....<br>If I'm going to get one
(and I'd love to....) I'd expect it to at least be
competitive with a new diesel.<br>Not so!<br>Anybody have any
suggestions on sites/companies?<br>To me a price over
$8,000.- for just motor and controller is
rediculous.<br>Then comes batteries, charging,installation,
etc.etc.<br>hope to get some hints.......

Try EV america , talk to Bob.
EVAmerica@....<br><br>Yoe didn't say whom you got that price from, but i
would guess that it was Elco. They don't seem to think
that ther is any other compition out there. EV America
is primarily an electric car group but they also do
boats. Have you gotten a price from Solomon technolgies?
If their price seem high remember that this is brand
new technologies, and with the recharge capablities
extras such as generators are not needed at all or a
much smaller one can be used. This will save quite a
bit of money. Also, fuel is a constant expense. And
finally, I don't know why you what to go electic, but for
me it is a quality, reliblity, and packaging issue,
not a price one. Hey, all you lurkers out there what
do you all think?<br><br>Bill

I would add KTA Services to the list of places to
check: (909) 949-7914.<br><br>I recently purchased all
the propulsion system components, except batteries
and charger, for my 23' fantail from them. The cost
was just over $2200 and that included LOTS more than
just the motor and the controller--right down to the
cabling and crimping tools, and the connectors.<br><br>I
did find that the more power your application
requires, the more specialized (and the more expensive)
everything becomes. A 38' boat is BIG.<br><br>One other
general point--you have to keep in mind that once those
batteries are installed you not only have a major portion
of your propulsion system but a major portion of
your operating costs as well. You can recharge the
batteries at a fraction of the cost of pumping $1.50/gal
diesel into those tanks after each outing.