March 2011 Blog Posts (4)

Sun Challenge Sailing: Sailboat Goes Electric

Sun Challenge is a project being carried out by John Wilson, who has converted his C&C 35 to run with an Electric Yacht electric propulsion system. The electric conversion experience, along with photos, videos and a description of the Sun Challenge project and Solar Village, you can check out…

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Added by Greg Martin on March 27, 2011 at 7:30pm — 1 Comment

Boats: The Other Electric Vehicle - Transportation | GOOD

eboat2 Good is a website that provides a progressive viewpoint on a range of topics in today's world. In their transportation section, covering future developments, an interesting article was written by Christopher Mimms March 22, 2010 about the future of boating. There is a discussion about electric boating in particular with a detailed history and explanation of notable examples. Also included are a couple of unique illustrations with an electric…

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Added by David Jones on March 26, 2011 at 7:30pm — 1 Comment

Restored Chesapeake Skipjack Gets E-Motion Hybrid Drive | E Motion Hybrids

WS400 E Motion Hybrids is a company that produces electric propulsion systems for vessels, also under the name of Electric Marine Propulsion. On their company website they have a news link which lists several notable projects that they have been involved with, including a recent retrofit of a classic Chesapeake Skipjack working sailboat. The 44' Caleb…

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Added by David Jones on March 16, 2011 at 8:00pm — 1 Comment

U.S. Navy is Going Electric | Electric Seas

destroyer-aegis-ddg-103 By Greg Martin   In a move that will reduce operating costs and logistic vulnerabilities, the U.S. Navy is taking steps along with all branches of services to reduce dependence on fossil fuels. In July 2009, The Naval Sea Systems Command (NAVSEA) awarded a contract to DRS Technologies Inc. of Fitchburg and Hudson, Mass to develop…

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Added by David Jones on March 2, 2011 at 6:00pm — No Comments

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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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Solar Electric Pontoon Boat Conversion

Hi All,I just completed conversion of my 24' pontoon boat to 100% solar electric (no shore power or other external charging).It's no speedboat but I am very happy with the results in the given application (small freshwater inland lake, summer-only usage).I think the Torqeedo, solar modules, and charge controllers are generally well enough known on this site, so I will only add that I am particularly satisfied with the 48V/50Ah Gen 2 Chevy Volt battery module performance.  At $850 with shipping…See More
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Tom Hruby posted a discussion

Field data from several runs of my St. Pierre Dory

This weekend I had a chance to collect data on the power requirements for my St. Pierre Dory while under way.  I thought it might be of interest to those trying to size a system.It was a calm day and I  recorded speed from my GPS and power from my ammeters.  These numbers are the average of at least 4 readings at each power level going both into the wind and against and with the ebbing tide and against.  The tide was relatively calm and the wind as well so the readings did not differ by more…See More
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Scott Masterson posted a discussion

I converted my 2016 Bayliner 175 to All Electric

I recently finished converting my 2016 Bayliner 175 to all electric. It cruises nicely at 25 to 30 mph. It is powered by a 147hp electric motor.The range is 25 miles. It takes 12 hours to charge at 120v and 4 hours at 240v. With respect to weight, it was a wash after the conversion. It comes in at a little over 1,900 pounds. The max speed is 53mph. I did the complete conversion myself in my garage. If you are interested in taking on a project like this, I would be more than happy to help.I have…See More
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PacificGreen posted a discussion

Expected mini bms battery draw

I am wondering what the anticipated power usage for the mini bms lights will be over periods of main contact switch disconnect - so no charge source and no current draw other than the bms?When I first bought the bank it sat in my house for around six months with little to no effect on the standing voltage that remained constant on all cells.I now have some concern after reading another post about leaving them over the winter with the bms blinking.  Thus the question?See More
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