T-Pain Is On A Boat

Tuesday, September 1, 2009

Re: [Electric Boats] Electric Yacht system

The following web-site is claiming $3.50 per ah up to 100 ah with
built-in battery management: http://www.iloveebikes.com/batteries.html.
They are using a lithium iron phospate battery, and will build it to the
customer's specs. The web-site has a comparison chart with other types
of lithium batteries and appears impressive. Just would like a opinion
from someone who has used one. The battery is suppose to be capable of
up to 2,000 cycles.

Don

On Tue, 01 Sep 2009 17:53:02 -0000 "ewdysar" <ewdysar@yahoo.com> writes:

Don,

I am just beginning my project, my first post here was just a few weeks
ago, right about the time that I started doing my research into the
feasibility of going electric with this boat. I'm still working on
getting the old Yanmar SVE12 out of "Serenity".

Your 48v lithium for $600 may or may not be a bargain, it depends on the
AH capacity. I know that EV components http://www.evcomponents.com/ sells
a 48v 20AH battery with a built in battery management system (BMS) for
about $770 (US residents have a 10% surcharge to cover ocean shipping and
duties). you would need 4 of them to get to the same storage as your 4
group 27 wet cells.

I'm going to have similar kinds of problems with prop size, though with a
full keel and the prop in an aperture, I may be more limited than you
are. This configuration does simplify my system, because regen has little
chance of working, so I can skip that part of the drive system.

Fair winds,
Eric
Marina del Rey, CA

--- In electricboats@yahoogroups.com, postal6@... wrote:
>
> Eric,
>
> How far along are you in your conversion ? I too plan on a second bank.

> I have recently heard a 48v lithum can be bought for under $600, which
> would constitute a bargain. Scott will be sending a 100ib unit...

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Re: [Electric Boats] Electric Yacht system

Don,

I am just beginning my project, my first post here was just a few weeks ago, right about the time that I started doing my research into the feasibility of going electric with this boat. I'm still working on getting the old Yanmar SVE12 out of "Serenity".

Your 48v lithium for $600 may or may not be a bargain, it depends on the AH capacity. I know that EV components http://www.evcomponents.com/ sells a 48v 20AH battery with a built in battery management system (BMS) for about $770 (US residents have a 10% surcharge to cover ocean shipping and duties). you would need 4 of them to get to the same storage as your 4 group 27 wet cells.

I'm going to have similar kinds of problems with prop size, though with a full keel and the prop in an aperture, I may be more limited than you are. This configuration does simplify my system, because regen has little chance of working, so I can skip that part of the drive system.

Fair winds,
Eric
Marina del Rey, CA

--- In electricboats@yahoogroups.com, postal6@... wrote:
>
> Eric,
>
> How far along are you in your conversion ? I too plan on a second bank.
> I have recently heard a 48v lithum can be bought for under $600, which
> would constitute a bargain. Scott will be sending a 100ib unit...

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Re: [Electric Boats] Electric Yacht system

Thanks for the info. The prop clearance issue remains paramount to me
after reading your issues. The prop size determines the formula to set
up the controller. I will contact Scott and sees what he has to say.

I have just been reading about Lithium Iron Phospate (LiFePO4) batteries,
and was wondering if any one has used one for marine application ?

Don

On Tue, 01 Sep 2009 16:14:16 -0000 "acsarfkram" <acsarfkram@yahoo.com>
writes:

I have two banks of batteries for range and redundancy. So far (May '08)
in the real world I haven't needed the second set for range. As I've said
before I did have issues with a battery going bad in one bank and it was
nice to have a healthy bank while working through the problems on the
sick bank. By the way the sick bank is all better now.

Regarding the prop, I tried putting a 13" CDI Extendo on my E27 and it
was too long (would not clear the rudder because of the extension) I
think I have a 2" hull clearance with the 12" prop. When installing the
motor you might be able to slide the prop shaft back enough to fit your
larger prop or maybe get a longer shaft. But even at that I can't imagine
you will have the hull clearance you need.

Please keep me up to date on what you do, if you can get a 14" prop on
your Ericson 27 you might be able to motor around the world ;-)!

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Re: [Electric Boats] Electric Yacht system

I have two banks of batteries for range and redundancy. So far (May '08) in the real world I haven't needed the second set for range. As I've said before I did have issues with a battery going bad in one bank and it was nice to have a healthy bank while working through the problems on the sick bank. By the way the sick bank is all better now.

Regarding the prop, I tried putting a 13" CDI Extendo on my E27 and it was too long (would not clear the rudder because of the extension) I think I have a 2" hull clearance with the 12" prop. When installing the motor you might be able to slide the prop shaft back enough to fit your larger prop or maybe get a longer shaft. But even at that I can't imagine you will have the hull clearance you need.

Please keep me up to date on what you do, if you can get a 14" prop on your Ericson 27 you might be able to motor around the world ;-)!

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[Electric Boats] Wye Island Marathon, Oct 2, 2009

The Wye Island Marathon, 24 mile electric boat race/cruise is scheduled for October 2, 2009. It starts and ends at the Miles River Yacht Club, St. Michaels, MD. The course tours the beautiful waterways around Wye Island, one of the highlights of the Eastern Shore of Maryland.
For details, Google Wye Island Marathon and you will find the event website.

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Re: [Electric Boats] Electric Yacht system

Eric,

How far along are you in your conversion ? I too plan on a second bank.
I have recently heard a 48v lithum can be bought for under $600, which
would constitute a bargain. Scott will be sending a 100ib unit. I doubt
I will exceed half an hour of "juice" on one sailing outing. It takes
about five minutes to clear the slips and catch the first breeze, and the
return is the same. My initial testing will be done on the two blade
prop until the three blade arrives. Taking the old engine out, gas tank,
and miscellaneous paraphernalia is very time-consuming. Not to mention
the fiberglassing of the old holes where history was started, and making
the engine compartment a showroom for the future of electric.

On Tue, 01 Sep 2009 03:59:42 -0000 "ewdysar" <ewdysar@yahoo.com> writes:

Don,

I'm familiar with Electric Yachts and was wondering which of their
systems that they recommended for your boat. I assume it was either the
100ib or the 130ib and that you'll be running 48v. I see that you're
planning on using 4 group 27 batteries which should give you about 2.3
kWh usable storage. You may find that you get less than an hour at 50A
before you're down to a 40% charge. The good news is that if you add
another battery bank in parallel, your effective range more than doubles
because each bank is getting hit with half the amps and batteries have
more capacity at lower discharge rates.

My plan is to get my boat running with one bank and add another one after
some of the kinks have been worked out. It also will give my wallet a
chance to recover a little before the second round.

I'm looking forward to hearing about your actual results.

Fair winds,
Eric
Marina del Rey, CA

--- In electricboats@yahoogroups.com, postal6@... wrote:
>
> Eric,
>
> Look up electricyacht.com. The site will give you a breakdown of the
> system, motor, controller, switch, fuse, etc. I will be hooking it up
> to four wet cell batteries, because I already had two and just adding
two
> additional. I am also in the process of replacing all interior/exterior
> lighting with LEDs to reduce the draw on house electrical needs.
>
> I am also awaiting the delivery of a three blade 14 X 12 prop. I have
> looked at all the other systems, which include chain drive versus belt
> drive, as well as a gearbox versus belt drive, and settled on Scott's
> assembled belt drive package. He is pleasant to deal with and has the
> electrical background to put it all together, and a thousand dollars
> under the Solidnav unit. If you have any further questions, please do
not
> hesitate to call.
>
> Don Swanson
> (619) 424-9800
>

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[Electric Boats] Re: newbie

--- In electricboats@yahoogroups.com, Larry Gwynn Gwynn <larrygwynngwynn@...> wrote:
>
> My first day on this forum. My name is Larry Gwynn. I live on an island off the coast of Georgia. My desire is to built something like a Redwing 18 electric boat so that I can ply the waters of the Altamaha River and its Sound. I'm retired so have plenty of time to get in trouble. Don't have enough knowledge to ask intelligent questions so I'll go into lurk mode for a while. Thanks.

Larry, Couldn't help but notice your post. I'm building a Redwing18 now and hope to use electric. Put it on a lake the other day with a 160lb. lenco system and ,was very pleased with the proformence. Used Hydrilla Hacker props. My concern is how it will act in current and windage?
>
>
>
>
>
> [Non-text portions of this message have been removed]
>

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T-Pain Is On A Boat

Tuesday, September 1, 2009

Re: [Electric Boats] Electric Yacht system

Re: [Electric Boats] Electric Yacht system

Re: [Electric Boats] Electric Yacht system

Re: [Electric Boats] Electric Yacht system

[Electric Boats] Wye Island Marathon, Oct 2, 2009

Re: [Electric Boats] Electric Yacht system

[Electric Boats] Re: newbie

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