Eric,
To take Myles off the hook, it is Mark Stafford who ripped out a 2500 pound GM271 diesel from a 1983 Herreshoff Marco Polo 55' sailboat named Constance in San Francisco Bay, and put in a 96volt DC GE 23hp motor and 1300 pounds of used and abused lead acid batteries.
Batteries were the hardest part for installation and maintenance.
I'm going hybrid: installing a 30hp ListerPetter diesel in parallel (either electric and/or diesel can drive the prop). I had planned to go serial hybrid (generator to batteries to e-motor), but my budget would not allow.
Mark Stafford
--- In electricboats@yahoogroups.com, "Eric" <ewdysar@...> wrote:
>
> Hi Pitt,
>
> I'm not sure exactly why you're keeping your results a secret, but providing some insight into how much power a 14 ton boat takes to drive it at various speeds would be very helpful to others. You've got a rare practical insight that cannot be replaced by prediction spreadsheets or rules of thumb. The size or composition of your battery bank doesn't affect your "watts to knots" specs at all and isn't that important to other potential conversion candidates.
>
> I believe that your boat is not the biggest or the fattest in the group, I think that Myles has a 55' wooden hulled electric conversion up on SF Bay too.................
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