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Old 04-08-2012
stewfish stewfish is offline
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Re: Electric Propulsion.

I read about the Lagoon's STI system and that got me thinking. Electric drive for Lagoon catamarans


Here is a bunch of interesting questions. Please feel free to add anything you think I should consider.
How much was your cost?
What HP are you using for your 28' boat (same as before?)
How many batteries? and what's your discharge time
What speed do you get the most efficiency out of it vs time before you run out of power?
12v or 140 v like the Lagoon's
do you use a wind generator to recharge as you are on the move/sailing or solar, 110/220 at the dock? How much did the charging system cost
I wondering if I could use a bunch of Costco deep cycle marine batteries at $65 each x 12 = $780 vs thousands.

I live in FL and this is sounding pretty cool with all the sun we get.

The Lagoon article says 4-5 hrs on 12 batteries
i saw one post of 11k for just the engine
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