Friday, February 20, 2015

[Electric Boats] Re: 47' Catamaran Project

 

HI Craig , I have seen your hubcap motors, they are very interesting, try a sevcon controller , they have come a long way with their design.
Brian D. HAll



ThunderStruck Motors, LLC
2985 Dutton Ave. Ste 3
Santa Rosa, CA 95407
Tel: (707) 578-7973
Fax: (707) 581-1860

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Posted by: Brian Hall <mainfuse@gmail.com>
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Re: [Electric Boats] 47' Catamaran Project

 

Gunboat is now using the Oceanvolt electric saildrives on their G4. The Oceanvolt saildrives are very state of the art and high quality - so is the G4. If you haven't looked at Gunboat's site, do so. That boat is crazy fast! 

Sally Reuther


On Fri, Feb 20, 2015 at 6:46 AM, Steve Dolan sdolan@scannersllc.com [electricboats] <electricboats@yahoogroups.com> wrote:
 

The Tang Electric System was put together by Dave Tether who built and developed the Solomons System I have on my boat. Last I heard Dave was not doing it any more but his site is still up.

 

http://www.electricmarinepropulsion.org/Index.html

 

Don't be afraid of higher voltages (Mine is 144V) on board. This is just like working on an Electric Panel in your house, don't stick your fingers in a place you're not sure of. When working on my pack I break it down to 48V's when I'm doing maintenance. All the High Voltage equipment and connections are in well protected boxes and I know to prepare for going into them.

Jason the Tang wasn't a Gunboat. It was built by TAG YACHTS. It had somewhat of a bad rap on its Electrical system do to many quality control issues with the boat. I talked to Dave Tether extensively about it and he was not happy with the builder. Main problem was the rush job to get it on the show circuit. I have heard of the "dumping power" issue with the 410 though I haven't experienced it yet. It's probably only going  to happen on extended cruising times.

 

Now Gunboat did use the Electric Marine system in their boat "Moonwave"

http://www.moonwave-systems.com/catamaran-hybrid-propulsion/

 

I believe the boat is in charter now which unless a Hybrid was to be a Captained boat by the owner I would never do.

 

Steve in Solomons MD

Lagoon 410 S2E

 

 



A couple of years ago, I had the pleasure of talking with the systems engineer for the  60' Gunboat catamaran, Tang! while it was moored in Fort Pierce, Fla. on their recent Atlantic crossing, they had to dump power they were generating so much. So whichever way you go, make sure that regen power flows are considered. You may just have to order hot showers for the crew, twice a day in order to handle the extra power. 

 

Cheers,

 

/Jason


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Posted by: Sally Reuther <smreuther@gmail.com>
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Re: [Electric Boats] Re: 47' Catamaran Project

 

This is a great post.

There are 2 ways to build big boats .. and yours is one.

The other is to go all out, all day, every day, with industrial tooling,
power lights and storage.
The difficulty with this is you need all the cash up front, and wont be
working doing anything else.

It is cheaper to do the second way ..
even if paying for the site.

Also, if possible, buying in bulk and using industrial equipment, will
be a lot cheaper.
A bilge pump is a "harsch service" conditions industrial pump, for example.
Cost / output is typically 10-30x cheaper than "yacht stuff", and the
products are a lot more durable.

On 20/02/2015 11:09, cordestim@yahoo.com [electricboats] wrote:
>
> Warning to about a project of this size. I figured it would take me 36
> months to build the hulls and figure everything out. This is the tenth
> season of building and I am not even thinking about the mast and sails
> this year. Good thing that you have bought plans. Hope you are under
> 35 years of age. I am 50 now. My lower discs are compressed, a few
> kinks in few of the uppers, shoulder needs tweeked again, and wife is
> not too happy with the project. And yes, I would do most of if again.
> smile

--
-hanermo (cnc designs)

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RE: [Electric Boats] 47' Catamaran Project

 

The Tang Electric System was put together by Dave Tether who built and developed the Solomons System I have on my boat. Last I heard Dave was not doing it any more but his site is still up.

 

http://www.electricmarinepropulsion.org/Index.html

 

Don't be afraid of higher voltages (Mine is 144V) on board. This is just like working on an Electric Panel in your house, don't stick your fingers in a place you're not sure of. When working on my pack I break it down to 48V's when I'm doing maintenance. All the High Voltage equipment and connections are in well protected boxes and I know to prepare for going into them.

Jason the Tang wasn't a Gunboat. It was built by TAG YACHTS. It had somewhat of a bad rap on its Electrical system do to many quality control issues with the boat. I talked to Dave Tether extensively about it and he was not happy with the builder. Main problem was the rush job to get it on the show circuit. I have heard of the "dumping power" issue with the 410 though I haven't experienced it yet. It's probably only going  to happen on extended cruising times.

 

Now Gunboat did use the Electric Marine system in their boat "Moonwave"

http://www.moonwave-systems.com/catamaran-hybrid-propulsion/

 

I believe the boat is in charter now which unless a Hybrid was to be a Captained boat by the owner I would never do.

 

Steve in Solomons MD

Lagoon 410 S2E

 

 



A couple of years ago, I had the pleasure of talking with the systems engineer for the  60' Gunboat catamaran, Tang! while it was moored in Fort Pierce, Fla. on their recent Atlantic crossing, they had to dump power they were generating so much. So whichever way you go, make sure that regen power flows are considered. You may just have to order hot showers for the crew, twice a day in order to handle the extra power. 

 

Cheers,

 

/Jason

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[Electric Boats] Re: 47' Catamaran Project

 

The SocialPath catamaran project is progressing slowly. At present, I am sourcing PMAC motors and controllers for propulsion. The Heinzemann PMS 120 and PMS 150 or a Parker traction motor seem to be what I am looking for. Heinzemann recommends a Sevcon controller and Parker uses a Curtis controller. I am trying hard to install, program, and launch the boat by mid summer.


I am trying to get information from both controller companies as to which model to use.

My motor generator is a Fischer Panda military APU that has electronics and diodes set to recharge a 24VDC battery bank. It puts out 5000w. I got this 400 hour permanent magnet generator for an amazing price of $1,700 including shipping. (thank you ebay seller)  My battery banks are fixed at 24VDC. 

While researching the Curtis controller website, they stated that their PMAC controller can use a 24 VDC nominal input voltage and spit out up to 50 VDC to the motor. This is excellent! The minimum input motor voltage at the power needed for my boat is at least 48 VDC. If the controllers really do this bump up, then the voltage challenge is solved. The price of all this may change my mind. smile.

When I get the motors and controllers all figured out I will post the info.

Warning to about a project of this size. I figured it would take me 36 months to build the hulls and figure everything out. This is the tenth season of building and I am not even thinking about the mast and sails this year. Good thing that you have bought plans. Hope you are under 35 years of age. I am 50 now. My lower discs are compressed, a few kinks in few of the uppers, shoulder needs tweeked again, and wife is not too happy with the project. And yes, I would do most of if again. smile

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Thursday, February 19, 2015

Re: [Electric Boats] 47' Catamaran Project

 

Hey Bob,

If you pop out of Puget Sound and hit Victoria BC in your
international cruising, and if you're interested, you could come and
see my Electric Caik / Electric Hubcap motors. I've made some and
have jigs & molds to do more, but they're not well tested. Since the
Electric Caik outboard hardly gets warm at 1KW, I figure it's
probably good for about 4.8KW (24V 200A) - a little 15 pound, 9.25"
OD x 4" motor.
The Electric Hubcap is 30 pounds, probably about 7.2KW (36V 200A) and
I figured about 95% efficiency. (The Caik seemed lower. I'm guessing
it's bearing friction - the needle bearings seem to be utterly
stuffed with grease and are hard to turn.)

Each motor has been an improvement over the previous so far, I
thought they were about there now, but now I'm trying unipolar
magnetization, which will have a simpler, more reliable motor
controller that makes less heat, and which according to some will
give improved performance. (So far my BLDC motor controllers don't
seem as reliable at high power as one might hope. I've bought a Kelly
BLDC controller - and copied a piece of the power layout for the
unipolar controller - but I haven't tried it yet.)

Cheers,
Craig Carmichael
Esquimalt (next to Victoria) BC
http://www.TurquoiseEnergy.com/

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Posted by: Craig Carmichael <craig@saers.com>
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Re: [Electric Boats] 47' Catamaran Project

 

A couple of years ago, I had the pleasure of talking with the systems engineer for the  60' Gunboat catamaran, Tang! while it was moored in Fort Pierce, Fla. on their recent Atlantic crossing, they had to dump power they were generating so much. So whichever way you go, make sure that regen power flows are considered. You may just have to order hot showers for the crew, twice a day in order to handle the extra power. 

Cheers,

/Jason



On Feb 19, 2015, at 11:19, rboyer56@yahoo.com [electricboats] <electricboats@yahoogroups.com> wrote:

 

I am beginning a project building a 47' cat.  I have plans from Dudley Dix, for the Dix470.  I am not an electrician but have done basic house wiring (I built three houses and did all the wiring).  I would like to use electric propulsion.  I saw the drawing for Socialpath and would like to hear how that project is going, or if finished how it has worked out.  

I live in Washington State, but plan to travel internationally after completing the project.  I believe that I'll need something between 10-12 kw for motors.

I would like to run two electric motors, a diesel genset, a large array of solar panels, I suspect that I will run a 48 vdc onboard system. I don't plan to use shore power much but should have a 120/240 system which can be connected in the US and outside. I would like to use LiFePo4 batteries, and suspect the price is getting to where they make a lot of sense. 

I am just beginning to learn about the electrical and am very interested in which suppliers you would recommend and what material to read in order to prepare for building the electrical system.  Any related information is welcome. Also any internet sources for background would also be appreciated.  Needless to say safe and simple is how I would prefer this project for ease of building and operation!

Thanks,

Bob Boyer

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Posted by: Jason Taylor <jt.yahoo@jtaylor.ca>
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