Mountain Man, I do not see where anybody else has answered the question of sizing yet, so here in my 2-cents worth. I was told once that ICE powerplants have a lot of parasite drag, as well as they need the higher powers to state the vehicle moving, that EV do not need. I can not say for myself, but I believe somebody told me if you are using a DC motor, size it at 50-67% (half-to-two thirds of an ICE). If it is an AC, 3-phase with a phase shifting controller, it could be as little as 33-50%. However, I would trust the experienced of this forum first.
Aero_Dan
----- Original Message -----Sent: Tuesday, May 27, 2014 9:54 AMSubject: RE: [Electric Boats] 50 HP diesel VS electric
I am looking in DIY,and if I install an electric motor I'd rather have a motor for all situations right away(coastal and blue water)what I dont know is what size electric motor would do the same job as my 50 hp diesel?Martin
To: electricboats@yahoogroups.com
From: electricboats@yahoogroups.com
Date: Thu, 15 May 2014 12:03:20 -0400
Subject: Re: [Electric Boats] 50 HP diesel VS electric
Hello Martin,A lot of your decision has to do with how you use your boat. A weekend sailor or day sailor who always returns to the dock and sails in protected waters would have a different type of system from someone who cruises their boat in coastal or blue water conditions.There are a lot of choices for electric propulsion systems from DIY (if you have the time, expertise and drive to learn as you go), to complete systems that are easily installed by a marine technician or an owner who is comfortable with marine electric.Most sailboats these days tend to have larger diesels for propulsion than they really need. That is so a larger alternator can be hung off the motor to power all of the other equipment on board the boat. All of the other electrical equipment you use on your boat is also something to be considered when making a choice as to which electric propulsion system to go with.There are a number of vendors you may want to look at and get input from.
- Annapolis Hybrid Marine sells inboard shaft drive systems up to 22kW from Clean eMarine Americas, as well as electric saildrives up to 15kW from Oceanvolt Ltd.
- Elco sells inboard systems and has just introduced a new saildrive system.
- Electric Yacht sells inboard systems of many sizes and has just introduced a new saildrive system.
- ElctroProp sells inboard systems for up to 50hp equivalent conversions.
- Mastervolt sells several different systems from pod drives to shaft drives.
- Thunderstruck offers DIY systems
And there are any number of other companies around the world that have sprung up in the last few years that offer various types of marine electric propulsion models.Sally ReutherAnnapolis Hybrid Marine
On Wed, May 14, 2014 at 4:24 PM, mdemers2005@hotmail.com [electricboats] <electricboats@yahoogroups.com> wrote:
Hello,
I am thinking to convert my sailboat engine to electric. It is a 50 hp diesel engine.The sailboat weight at 18,000 lbs. Wich kind of electric motor should I use?
Thanks in advance, MartinNo virus found in this message.
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Respectfully,
Dan Hennis
;-)>
Dan Hennis
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Posted by: "Dan Hennis" <dhennis@centurytel.net>
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