Wednesday, March 31, 2010

[Electric Boats] Re: Prius Motor

 

Hello All
Has anybody tried using a Prius motor and inverter to drive a boat?
Prius inverters are available on Ebay  U.S. for about $650 and they handle a lot of power
I have not seen M1 and M2 (the electric motors from a prius) being sold separately
But there is a complete power train on Ebay at the moment for $2k and this would contain M1 and M2
and comes with the invertor
Looking at photo's of the inverter and motors on various sites , they sure are built to last!

Nick

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Re: [Electric Boats] Re: Electric Boats

 

Thanks for the welcome. As regards the boat, it doesn't really matter where it is at. I will go to it if it is the right boat.
 
Best regards,
James

From: Angela <mstafford@natca.net>
To: electricboats@yahoogroups.com
Sent: Wed, March 31, 2010 12:20:10 PM
Subject: [Electric Boats] Re: Electric Boats

 

Welcome James!

Are you looking for, or have you already found, your next sailboat? And where in the world are you? There may be some folks local to you that would be of mutual benefit.

Mark Stafford
H55 in the San Francisco Bay

--- In electricboats@ yahoogroups. com, James Cheney <creationworks@ ...> wrote:
>
> I am very pleased to have found that their is a group dedicated to the implimentation of electric drive on boats, particularly sailboats. It is an area of interest of mine, and something I have been planning to do for some time. This will be an invaluable resourse to help me accomplish this. I will be converting my next sailboat to electric drive and hit the high seas. Cheers to you all!
>


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Re: [Electric Boats] Re: Electric Boats

 

Hello Mark,
 
I am very mobile. Currently I am in St. Louis, but shortly will be in Brazil, and then back to the US in Galveston, Tx. I am looking at a couple of boats there in the 40ft range. My two top contenders of all the boats I've looked at.  Still haven't put any money down yet so open to suggestions. I am a true blue water sailor so the boat will have to meet those qualifications. No coastal cruisers.
 
Best regards,
James

From: Angela <mstafford@natca.net>
To: electricboats@yahoogroups.com
Sent: Wed, March 31, 2010 12:20:10 PM
Subject: [Electric Boats] Re: Electric Boats

 

Welcome James!

Are you looking for, or have you already found, your next sailboat? And where in the world are you? There may be some folks local to you that would be of mutual benefit.

Mark Stafford
H55 in the San Francisco Bay

--- In electricboats@ yahoogroups. com, James Cheney <creationworks@ ...> wrote:
>
> I am very pleased to have found that their is a group dedicated to the implimentation of electric drive on boats, particularly sailboats. It is an area of interest of mine, and something I have been planning to do for some time. This will be an invaluable resourse to help me accomplish this. I will be converting my next sailboat to electric drive and hit the high seas. Cheers to you all!
>


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[Electric Boats] Re: buying a Torqeedo 1003

 

Hey, I am a gold miner in washington state....well, we don't actually have much good gold left and the lawmakers have such strict rules here that really it is pointless...I really want to spend a summer in Alaska prospecting though. Is that Nome beach gold you mine?

I have never ridden in a portaboat but I would guess if a 2 or 3 hp gas outboard would move it then the 1003 would do just as well. You need to consider if you just want to use it for short hops or if you plan to be out all day in it (in which case you would need more batteries or some way of recharging it). I plan on using it as a light auxillary on my 17 foot Montogomery sailboat.

--- In electricboats@yahoogroups.com, willoyaboy <no_reply@...> wrote:
>
> Hi-I have a portaboat 14 ft. I'm thinking of buying a torqueedo 1003 (same as you) reply if you can give me more inside info whether it's a good matchup I'm a gold miner out of nome alaska
>
>

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[Electric Boats] Re: Electric Boats

 

Welcome James!

Are you looking for, or have you already found, your next sailboat? And where in the world are you? There may be some folks local to you that would be of mutual benefit.

Mark Stafford
H55 in the San Francisco Bay

--- In electricboats@yahoogroups.com, James Cheney <creationworks@...> wrote:
>
> I am very pleased to have found that their is a group dedicated to the implimentation of electric drive on boats, particularly sailboats. It is an area of interest of mine, and something I have been planning to do for some time. This will be an invaluable resourse to help me accomplish this. I will be converting my next sailboat to electric drive and hit the high seas. Cheers to you all!
>

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[Electric Boats] Re: converter

 

Matthew,

My bad. Thanks for clarifying "better". I should have specified "much less expensive". To my surprise (thank you), it turns out Direct Current travels "better" (as in "much less energy loss") if you use high voltage or low amperage. Just how high and low is the big question.

I should have realized the AC/DC wars a century ago were limited by technology, not physics. Now DC transmission (at 500KV, 2GW, 40KM (4K amps!) and 3% energy loss) is "better" over long un-interrupted distances (under the English Channel, in this case). Better cost, better efficiency, though still not better reliability (hence the 4 link redundancy).

"Costs of high voltage DC transmission" at:
http://en.wikipedia.org/wiki/HVDC

Thanks again,
Mark Stafford

--- In electricboats@yahoogroups.com, Matthew Geier <matthew@...> wrote:
>
> Angela wrote:
> > Great responses to the AC/DC dilemma. Add to the mix: AC travels better, so the higher the current and/or the longer the wires, the more likely AC will be more efficient.
>
> That's not strictly true either. Now that high power electronics can
> cope with powers in the megawatt region, long distance high voltage DC
> power lines are now being built and are desirable - they have lower
> losses than their AC equivalents.
>
> We have AC distribution simply because the humble transformer is such a
> reliable and efficient item. Until high power electronics became
> available, building a high voltage DC line was difficult. High voltage
> DC was difficult to make and difficult to turn back into a useful lower
> voltage. Modern advances in power electronics have altered the picture.
>

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[Electric Boats] Re: buying a Torqeedo 1003

 

Hi-I have a portaboat 14 ft. I'm thinking of buying a torqueedo 1003 (same as you) reply if you can give me more inside info whether it's a good matchup I'm a gold miner out of nome alaska

--- In electricboats@yahoogroups.com, "Roland" <lightdoesnotage@...> wrote:
>
> Hi guys,
>
> I have a Torqeedo 1003 on order for my Montgomery 17 sailboat and while I wait I was curious if any of you have had the chance to try this model yet? It seems to have had several improvements over the 801 model (submersible, quieter, larger power/battery) so I am excited to see how it works. I mostly only use my 2.5HP yamaha to launch and retrieve, so it is possible the Torqeedo could become the primary and the yamaha relegated to backup. The 2.5HP at 3/4 throttle pushes my M17 at about 4.5 to 5kts depending on conditons.
>

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[Electric Boats] Electric Boats

 

I am very pleased to have found that their is a group dedicated to the implimentation of electric drive on boats, particularly sailboats. It is an area of interest of mine, and something I have been planning to do for some time. This will be an invaluable resourse to help me accomplish this. I will be converting my next sailboat to electric drive and hit the high seas. Cheers to you all!

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Tuesday, March 30, 2010

Re: [Electric Boats] Re: converter

 

Angela wrote:
> Great responses to the AC/DC dilemma. Add to the mix: AC travels better, so the higher the current and/or the longer the wires, the more likely AC will be more efficient.

That's not strictly true either. Now that high power electronics can
cope with powers in the megawatt region, long distance high voltage DC
power lines are now being built and are desirable - they have lower
losses than their AC equivalents.

We have AC distribution simply because the humble transformer is such a
reliable and efficient item. Until high power electronics became
available, building a high voltage DC line was difficult. High voltage
DC was difficult to make and difficult to turn back into a useful lower
voltage. Modern advances in power electronics have altered the picture.

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[Electric Boats] Re: converter

 

Great responses to the AC/DC dilemma. Add to the mix: AC travels better, so the higher the current and/or the longer the wires, the more likely AC will be more efficient. Very short and thick DC wires equals long and much skinnier AC wires. High voltage and low amperage DC is efficient, though anything above 48 volts needs special protection (because of average human skin conductivity).

Were you wondering about propulsion or house loads?

Mark Stafford
H55 sailing project

--- In electricboats@yahoogroups.com, "jndv_usa" <jndv_usa@...> wrote:
>
> somebody tell me about low voltage DC to high voltage AC conversion.
>

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