Yes, it is.
Victor
--- In electricboats@yahoogroups.com, "Larry Doyle" <ldoyle@...> wrote:
>
> Hey Victor, Is your boat a Brent Swain design?
>
> From: vjmtymo
> Sent: Monday, December 13, 2010 9:14 PM
> To: electricboats@yahoogroups.com
> Subject: [Electric Boats] Finally finished
>
>
> Well, finally finished building the boat and the electric drive. Just completed a 100nm maiden voyage along Vancouver Island with varying weather and winds, and without incident. Even with 48v I can push this heavy hull straight into 15+ knots with 50 amps or less. Prop is a 15 inch Campbell sailor with a 13 in pitch. At 6 knots, it spins the motor when sailing so I'm going to take a 17" motorboat prop and shape it, pitch it to maybe 16 inches and see if that makes a big difference before considering a new controller for regen. With 20 amps in flat calm I seem to recall about 3 knots, and full out (150 amps) we're around 5. Motor's topping out at 150 amps so it needs more work.
> Recharging is with a DPI portable 17A 48V charger which, if you select the appropriate charging algorithm, doesn't mind running while you have the motor going. We did this for about 4 hours off of a Honda 2000i. At no point did we run the batteries down more than 50% and that was only once. More commonly I charged after using 15% or less.
> Boat is an 18,000 pound steel 36 footer, 10.5 foot beam, with twin keels.
> I'm now in Victoria BC with some great heavy winds out of the Juan De Fuca Strait to play with this winter. Hopefully I can tweak up the system and get it working more efficiently.
> So, thanks to anyone who provided advice and incentive, as well as the pessimism to keep me from being delusional.
>
> Victor
>
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