Wednesday, November 4, 2015

Re: [Electric Boats] New member, developing electric outboard

 



Somebody is dreaming again, and somebody else is trying to steal vast amounts of money from the public selling the overpriced pontoon boats.  Just my opinion...
 
Dan
 
----- Original Message -----
Sent: Wednesday, November 04, 2015 1:21 PM
Subject: Re: [Electric Boats] New member, developing electric outboard

 

You guys are familiar with   http://www.blueplanetcats.com/index.html    ?
Down East NC
Glenn

Sent: Wednesday, November 04, 2015 11:07 AM
Subject: Re: [Electric Boats] New member, developing electric outboard

 

Absolutely would love to see it on a cruising power cat even. My dream is a solar power cat and the only way I see it having enough solar space is in a power catamaran. 
Nick



Sent from my Bell Samsung device over Canada's largest network.


-------- Original message --------
From: "Joe Murray computersatsea@yahoo.com [electricboats]" <electricboats@yahoogroups.com>
Date: 2015-11-04 11:03 AM (GMT-05:00)
To: electricboats@yahoogroups.com
Subject: Re: [Electric Boats] New member, developing electric outboard

 

A 32ft cruising catamaran

Sent from my iPhone

On Oct 20, 2015, at 3:28 AM, rebele@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:

 

My company just finished the engineering prototype of our 20 kW (continuous) outboard motor. This isn't a conversion; it's a new development, with no seawater loop, and a very small upper unit (far smaller than any gas outboard). It runs at 1500 RPM with a large custom prop, so its efficiency is high, and it provides the propulsion of a 35 HP gas outboard. 


The battery packs weigh just under 100 lbs and contain 6 kWh each of li-ion batteries. These packs can be combined (working in parallel) to reach higher battery capacity for longer range.


One question I have for this group is: what hull do you think would best show the capabilities of this system, and the benefit of clean, quiet power? We're currently using a hull that rowing coaches normally use, but that's not mainstream. 


Thanks.


Andy


Respectfully,
Dan Hennis
;-)>

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Posted by: "Dan Hennis" <dhennis@centurytel.net>
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Re: [Electric Boats] New member, developing electric outboard

 

You guys are familiar with   http://www.blueplanetcats.com/index.html    ?
Down East NC
Glenn

Sent: Wednesday, November 04, 2015 11:07 AM
Subject: Re: [Electric Boats] New member, developing electric outboard

 

Absolutely would love to see it on a cruising power cat even. My dream is a solar power cat and the only way I see it having enough solar space is in a power catamaran. 
Nick



Sent from my Bell Samsung device over Canada's largest network.


-------- Original message --------
From: "Joe Murray computersatsea@yahoo.com [electricboats]" <electricboats@yahoogroups.com>
Date: 2015-11-04 11:03 AM (GMT-05:00)
To: electricboats@yahoogroups.com
Subject: Re: [Electric Boats] New member, developing electric outboard

 

A 32ft cruising catamaran

Sent from my iPhone

On Oct 20, 2015, at 3:28 AM, rebele@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:

 

My company just finished the engineering prototype of our 20 kW (continuous) outboard motor. This isn't a conversion; it's a new development, with no seawater loop, and a very small upper unit (far smaller than any gas outboard). It runs at 1500 RPM with a large custom prop, so its efficiency is high, and it provides the propulsion of a 35 HP gas outboard. 


The battery packs weigh just under 100 lbs and contain 6 kWh each of li-ion batteries. These packs can be combined (working in parallel) to reach higher battery capacity for longer range.


One question I have for this group is: what hull do you think would best show the capabilities of this system, and the benefit of clean, quiet power? We're currently using a hull that rowing coaches normally use, but that's not mainstream. 


Thanks.


Andy


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Posted by: "Glenn Holland" <gholland1@nc.rr.com>
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[Electric Boats] Practical Sailor - Electric Propulsion

 

I sent the following email to Practical Sailor.  If you know the publication, you know that they do not do any advertisement and function as an independent reviewer of products in the marine industry.  I think it would be helpful for the sailing community to understand what we as individual sailors are doing.

"would you consider doing an article on electric propulsion for displacement keel boats.  In the US, I suspect over 10% of all "new" motors being installed to replace dead or dying gas or diesel engines in sailboats from 27 to 40ft are  electric.  I estimate that number at over 300 motors this year and growing.  This is from my anecdotal questioning of companies selling inboard electrical propulsion and the limited information available from the few diesel manufacturers.
The electrical marine propulsion companies in the US are in alphabetical order: Annapolis Hybrid Marine (Thoosa), Elco, Electoprop, Electric Yacht, GreenStar (new to the US), MasterVolt, and Torqeedo... also DIY kits being offered these include Thunderstruck, and Electric Motor Sport. Finally there are those who just build their own."
If you would also like to reach out to Practical Sailor, you can contact them at practicalsailor@belvoir.com
Mike Electric Yachts of Southern California/Pacific

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Re: [Electric Boats] New member, developing electric outboard

 

Absolutely would love to see it on a cruising power cat even. My dream is a solar power cat and the only way I see it having enough solar space is in a power catamaran. 
Nick



Sent from my Bell Samsung device over Canada's largest network.


-------- Original message --------
From: "Joe Murray computersatsea@yahoo.com [electricboats]" <electricboats@yahoogroups.com>
Date: 2015-11-04 11:03 AM (GMT-05:00)
To: electricboats@yahoogroups.com
Subject: Re: [Electric Boats] New member, developing electric outboard

 

A 32ft cruising catamaran

Sent from my iPhone

On Oct 20, 2015, at 3:28 AM, rebele@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:

 

My company just finished the engineering prototype of our 20 kW (continuous) outboard motor. This isn't a conversion; it's a new development, with no seawater loop, and a very small upper unit (far smaller than any gas outboard). It runs at 1500 RPM with a large custom prop, so its efficiency is high, and it provides the propulsion of a 35 HP gas outboard. 


The battery packs weigh just under 100 lbs and contain 6 kWh each of li-ion batteries. These packs can be combined (working in parallel) to reach higher battery capacity for longer range.


One question I have for this group is: what hull do you think would best show the capabilities of this system, and the benefit of clean, quiet power? We're currently using a hull that rowing coaches normally use, but that's not mainstream. 


Thanks.


Andy


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Posted by: 63urban <63urban@gmail.com>
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Re: [Electric Boats] New member, developing electric outboard

 

A 32ft cruising catamaran

Sent from my iPhone

On Oct 20, 2015, at 3:28 AM, rebele@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:

 

My company just finished the engineering prototype of our 20 kW (continuous) outboard motor. This isn't a conversion; it's a new development, with no seawater loop, and a very small upper unit (far smaller than any gas outboard). It runs at 1500 RPM with a large custom prop, so its efficiency is high, and it provides the propulsion of a 35 HP gas outboard. 


The battery packs weigh just under 100 lbs and contain 6 kWh each of li-ion batteries. These packs can be combined (working in parallel) to reach higher battery capacity for longer range.


One question I have for this group is: what hull do you think would best show the capabilities of this system, and the benefit of clean, quiet power? We're currently using a hull that rowing coaches normally use, but that's not mainstream. 


Thanks.


Andy


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Posted by: Joe Murray <computersatsea@yahoo.com>
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Tuesday, November 3, 2015

[Electric Boats] electric cats

 

I'm thinking of trying to purchase a 38 ft. - 45 ft. cruising catamaran and convert it to all electric (or hybrid if necessary)  and am looking for suggestions or concerns.  I am particularly interested in expected conversion costs and the types of power sources one might use. 


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Re: [Electric Boats] Re: New member, developing electric outboard

 

Andy,
I really have to agree that re-powering of 13' whaler is a great option to show mainstream capabilities to the market.  

1. It is a hugely popular boat and on most of the older model, the 4 stroke 40HP re-powering options are really too heavy for the back of the boat.  They mess up the balance of the older boat designed for 2 stroke outboard. 

2. Many people have opted for a 25hp or added a 12 gal tank (approximately 100 lb) under the front seat to help the balance.  this would also be a good place for your battery because it would open the area behind the drivers seat for someone to stand and fish which has always been a complaint when having two fisherman on board. This could also be cost justified by eliminating the need for a separate trolling motor. 

3.Many of these boats become a grand kids first boat and I believe you would find that parents and grandparents really appreciating the idea of not having the grand kids messing around with gas engine or the ongoing maintenance.  

4.  If you can offer do it yourself re-power instructions and a complete re-power kit including a forward seat that covers your battery, I think you may find a very fertile market. 

As a retired marketing guy and a fan of the potential for electric boats I hope you succeed. 
Mike



On Tuesday, November 3, 2015 7:18 AM, "Hannu Venermo gcode.fi@gmail.com [electricboats]" <electricboats@yahoogroups.com> wrote:


 
All excellent points from Andy, I agree.

What is the proposed kWh capacity of the batteries, and cost/kWh of same ?

On 03/11/2015 16:07, mike@electricyachtssocal.com [electricboats] wrote:
>
>
> Andy,
>
> Excited about what you are building. My advice?If you are going to
> use the boat as a test/demonstration boat, you should get a boat that
> is more common in the market and would provide the most representative
> model for the market. If you are looking at 20kW outboard, I would
> want to know how it pushes a 13ft Boston Whaler which is a well know
> and popular boat which is often powered by motors from 9.9hp to 40hp.
> That would be a great demo boat to use in order for the market
> understand the capabilities of the motor.
>
> I also want to understand the 20kW continuous. Does it have a higher
> rating for short bursts? What is the voltage of the motor?The 1500
> RPM is good.The special propeller also is of interest.We know of other
> electric outboards that over compare their capabilities because in a
> controlled test their special propeller will perform better than what
> would be a real world usage.
>
> Outboards are rated at the propeller (thrust) which is vastly
> different than what inboards are rated. A 35 hp diesel (break hp) is
> actually about 28shp (shaft hp). That is what we all expect. My
> question is will your 20kW electric outboard therefore would likely be
> more comparable to a 28hp outboard (20000w / 746). Very impressive
> and I believe there is a market for such a quiet powerful motor. I
> would also think that a motor that would provide the thrust of a 9.9hp
> outboard would be even more popular.
>
> MikeElectric Yachts of Southern California/Pacific
>

--
-hanermo (cnc designs)



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