January 2011 Blog Posts (4)

Introducing the Aequus 7.0: Solar Electric Family Launch | EV World

Aequus7_0_solarmotorlaunch EV World has an article featured on June 30, 2010 about the new Aequus 7.0 Solar electric family launch. Built in Rochefort France by champion sailor Bruno Hervouet, this all electric cruiser has a solar panel covered canopy and attain speeds of 7 knots and can cruise for up to 8 hours, even without solar assist. Read more about it…

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Added by David Jones on January 12, 2011 at 7:30pm — No Comments

Builder of Electric Motors for Boats on a Green Mission | The Japan Times Online

The Japan Times Online featured an article on December 14, 2010 about Kiyoshige Ito, the president of Ito Company, which produces electric propulsion systems for boats in Japan. Motivated by a desire to do something about climate change, Ito's company produces electric outboard motors for fishing boats. Read more about Ito's efforts in…

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Added by Greg Martin on January 10, 2011 at 7:00pm — 1 Comment

Boating Re-Volt! | Scruffie Marine

Scruffie Marine is a boat design shop in Queensland, Australia that designs seaworthy, classic and environmentally minded boats. The Scruffie Marine blog, written by Derek Ellard, featured a post on October 14, 2010 which is a concise and fun to read introduction to electric boating, with a bit of history and perspective. Check it out…

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Added by Greg Martin on January 5, 2011 at 8:00pm — No Comments

The Green Samba – The First Viable Electric Personal Water Craft | GizMag

GizMag, May 19, 2010 posted an article about the first electric powered Personal Water Craft (PWC), the Green Samba. This technological wonder is just as fast and fun as a gas powered PWC, but it's quiet and doesn't pollute the environment! Read about it…

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Added by David Jones on January 4, 2011 at 5:30pm — No Comments

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New boat taking shape

Taking on another big project and just looking to see if anyone might have any feed back4 years ago I restored a 33foot Morgan O/I and repowered  with a Thunder Struck 10kw drive and a 310ah FLA battery bank I am very happy with this boat and lived aboard for 3 yearsBottom line I met a girl that likes living aboard as much I do so I bought a 43 foot Gulf Star trawler no mistake about it. Its a huge project but it is moving alongIt is powered by Perkins 6-354s my plan is to sell them and repower…See More
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Electric power for a 16 ft runabout

In the mid 1990's Phil Bolger, a naval architect from Gloucester Massachusetts, designed an electric runabout for the home builder called the Lily.  Recently there has been some interest in upgrading the design of the propulsion system and batteries to make better use of current technologies.  Here are my suggestions for upgrading the original system in Lily. The MotorsIn 1995 Lily was set up with a 24 V trolling motor, and I consider trolling motors to still be the most cost effective option…See More
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Mark Frasca posted a discussion

Mini BMS

I'm closing in on making the switch to lithium. I am using a Mini BMS for the battery management and having trouble getting the AC relay for the charger to reset. The "key" terminal on the head board is connected to the switch but it does not reset the relay when cycled on and off. If I physically disconnect and reconnect the 12 volt supply to the board the AC relay resets. Does anyone know what the "key" terminal on the head board wants to see?
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George Ojdrovich posted a discussion

Electric sailboat endurance estimates and experience

We talk a lot about range in miles at various speeds, but I think for cruising sailboats the real question is how long can you go without needing to recharge. This includes house loads and motoring.When we had Snow Lily (Tartan 34C) repowered my goal was to get 5 to 7 days cruising without needing any sort of recharge. I was cautioned to go with diesel as range would be a problem, but I really think in terms of sailing and not motoring. The motor is only for in and out of the tight marina, on…See More
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Jim Rockfinder posted a discussion

Post your boat speed !!!

I'd like to try to get a handle on boat speeds.So please:  post your boat details and speeds!  I'll get the ball rolling....- Defintion of "takeoff weight":  just like aircraft:  entire weight of craft + batteries + humans + everything.  If you don't know, take an educated guess.- conversions fyi:        1km/hr = 1.6mph        1km/hr = 1.852knots- HOW I MEASURE SPEED:   I find GPS's generally suck at reading low speeds.  What I do is take two known points (the corner of my dock, and the corner…See More
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