Here's a reply no one will like. You probably cannot power the drive directly. If you try, then think along the line of a hybrid. If you decide to go it as most of the hobbiest's do or companies that sell electric drives then keep it simple. Her is my suggestion(s) for home made and far better than purchased. I would like to note that propulsion Marine's gear drive is simple and smart...but not expandable. 1. Using a "mars type motor" mounted on plate of aluminum, consider a sandwich design that allows air...or even better water flow thru. 2. by using this design, (plate) you can even add clutch drives that spin utilizing regen far more effectively. 3. USE ONLY NON_ COGGING generators than just kick in at lower speeds (also adjustable via pulleys and space bearings... the problems associated with 'traditional' generators, are that as the battery charges (gets full) the voltage places demand on the alternators and slows them down....'coggs' 4 attempting to charge 48 volts collectively is also a waste of time.....solar / wind...use smaller generators and send the charge to each battery individually. the battery bank will balance itself and buffer at the same time 5. using the above as an idea....you will find the integration of solar cells in the future easier because you may place smaller arrays around your boat and use the same principles The problem with electric drives and the concepts considered here are that when they think of 48 volt systems, batteries, solar panels, etc..they are honest and are dealing with the boat they have or the simplicity of manufacturing for profit. Hunter is now offering electric but DID NOTHING to adjust it's design for electric. They merely incorporated an electric drive...peroiod! To make it work, the hull must be redisigned to allow for micro generation, caterpillar propulsion?? peizo electric generation and yes ...solar. Can they make solar panels that run cool, and walk all over them....I did 10 years ago!! There's just no call for it. Good luck ps...I already did a 30 ft Hunter using the above and worked like a charm. I moored it and never once used a generator or plugged it in. I've since then sold it and will be purchasing another one to do it again....I actually like building them more than sailing them......its silly I know --- On Sun, 7/17/11, kerryfenn <camillekerry@eircom.net> wrote:
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