James,
Start by outlining what you want to do with the boat.
Will you only sail it with minimal aux power to get in and out of the marina? Or do you want to be able to cruise for several hours with the sails down?
What speed are you comfortable with? How long will your trips be?
With that kind of insight, then an expert might be able to make some guesses on the type of motor that would be appropriate.
If you know the motor, and the range / speed you want to be able to go - then you can calculate the size of the battery bank. Then you can start to get an idea of what the cost of an electric conversion will be.
Be prepared: For that size boat, if you want any kind of significant range (and I'm only talking 2 hours or so... plus a 3rd hour for margin) - the cost of a conversion will most likely exceed the cost of having the diesel replaced.
The advantage of going electric is that maintenance can be considerably less. No oil changes. Probably no impeller changes unless you go with a water cooled motor. You can get rid of a couple of holes in the boat!
But the bottom line is that you have to do an electric conversion because you want an electric boat - not because it makes financial sense.
Hope that helps some.
John
On Thursday, July 2, 2020, 12:02:40 PM CDT, financial@jamesschmidt.xyz [electricboats] <electricboats@yahoogroups.com> wrote:
I have a 1971 CT 41 sailboat with a frozen 50 hp diesel engine. My boat displaces 25700 lbs. Where di I start?
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Posted by: oak <oak_box@yahoo.com>
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