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  #31  
Old 01-31-2013
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Re: Towed Generator that We Really Need

These solar panels are sold by several vendors on fleabay... type 'PLV-128' in the search bar... lowest I've seen is $135 per panel... that's a really good price but mine were a better price since I got them free!
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  #32  
Old 01-31-2013
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Re: Towed Generator that We Really Need

To Bobmcgov
During the Vendee Globe the Watt&&Sea generators proved to be very reliable
Failures came from the attachment fo the generator to the boat Some showed problems even without hitting anything All repairs jobs had to be on the fixture! But keep in mind that these boats hit speed of 20knots for long hours .
Still an expensive item but I believe that you will see more of them in an ear future and probably will come as an option when buying a new sailboat
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  #33  
Old 01-31-2013
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Re: Towed Generator that We Really Need

Quote:
Originally Posted by peterchech View Post
Do you have a link to some panels for sale for ~$1/watt? Cheapest I've found is just under $3/watt for monocrystaline.
Here's a few sources. Monocrystallines are harder to find at $1/W, but they are out there.

Astronergy CHSM 6610P 245-watt solar panel

Solar Panels - Buy Solar Power Panels for Your Home or Business

140Watt 12V Monocrystalline Solar Panel 140W 12volt PV Mono Power Module | eBay

Talesun 250W Polycrystalline Solar Panel TP660M | PVPower.com

Few things to note when shopping PV. Monocrystalline maintains output better in hot climates, but polycrystalline is almost as good. The large cells on monoC panels can be more prone to shading losses. Discounts offered for multiple panels; shipping can greatly effect purchase price; and check for Federal or State incentives. Oh -- and mounting PV correctly may cost more than the panels.

There are smart MPPT charge controllers out there (Midnite Solar, OutBack, BlueSky) that will not only boost amp-hours by 15-25%, but can match most panel voltages to most battery bank voltages. Your best price point is on 225-270W panels; per-watt costs tend to be 2 to 3x higher on smaller panels (30-100W).
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