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post #21 of 26 Old 02-16-2013
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Re: Electric hybrid Inboard Vs Diesel

LaunderBoy: The weight of the battery pack will be quite high compared to the fuel. The weight needs to be carfully balanced so as to not change the sailing balance., Also, where are you going to store the battery? It will take some serious work to build a battery compartment to store and contain the battery.

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post #22 of 26 Old 02-16-2013
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Re: Electric hybrid Inboard Vs Diesel

If your goal is to sail/cruise, not spend a fortune or build a floating technology lab, why not just replace or rebuild the A4? You can probably put a rebuilt A4 in for less than 1/2 the price of a diesel, and a swap-out is a DIY job. You will never come close to recouping the cost of a new diesel.

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post #23 of 26 Old 02-17-2013 Thread Starter
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Re: Electric hybrid Inboard Vs Diesel

Really depends on the type of cruising one does. I have to cross through the Los Angeles shipping lanes just to leave the break and get out into open water. Not only do shipping boats pass through there but also the Navy, commercial fishing and VERY large cruise ships so not having the umph on demand really isnt an option for me.

As for costs. There is a lot of difference of opinion on how long the batteries will last and vary on the extreme in both directions. That time stamp means nothing until someone who has one set up and has been using it for 5 years or more can tell me really how often they have to change the batteries.

Lots of factors there.

-are you charging under load
-how quickly are you charging the batteries
-how far down do you let the batteries get before you start charging them
-type of batteries
-size of volt and amp draw from electric motor
-how often does the boat sit without "exercising" the battery bank

All these things can drastically affect the lifespan of a battery bank. Price will vary drastically depending on the type. The type will also determine a whole slurry of factors in distance, charge time, cost, etc etc

Fossil fuels are easier to understand in this sense but also. I unfortunately have large gaps of time between operation on my boat. Primarily because I live 60 miles inland from my slip which we all know isnt amazing for Atomic 4 engines. Diesel especially are not fond of not being ran regularly

Chances are I will sort out my engine problems and milk a couple more seasons out of the powerplant while I get the rest of the boat up to the level I want it at. Hopefully by the time my atomic has had enough I will be ready to rebuild or replace
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post #24 of 26 Old 02-17-2013 Thread Starter
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Re: Electric hybrid Inboard Vs Diesel

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Originally Posted by chucklesR View Post
Unfortunately hybrid just isn't ready for long term cruising yet, and simply isn't cost effective (certainly not on a 1969 boat).
What exactly in your mind makes you feel that there is any difference in the cost effectiveness in a 1968 vs a 2013 model sailboat? If that is based on precieved value then I will have to argue that point.

I have worked on newer model boats and I have to say for the most part I wouldnt trust my life to one. Most of the newer model vessels are laid up thinner than should be legal. That is my first hand experience.

If I won the lottery tomorrow and became filthy rich I wouldnt buy a new yacht. I would but a 60's era 38 footer and have it redone from the ground up. Out on the ocean where you gotta your equipment with your life I want something laid up nice and thick. like a floating tank
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post #25 of 26 Old 02-17-2013
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Re: Electric hybrid Inboard Vs Diesel

I am looking into Diesel Electric Hybrids for my eventual cruiser/liveaboard due to the simplification of systems. Why would I want a diesel engine AND a diesel generator when one system can provide both and do so for less fuel?

It may not be feasible to some on an old boat.. but then, I am not looking to buy and cash out in a year or two. I am thinking long term ownership.

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post #26 of 26 Old 02-18-2013
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Re: Electric hybrid Inboard Vs Diesel

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Originally Posted by glassdad View Post
LaunderBoy: The weight of the battery pack will be quite high compared to the fuel.
You're not just replacing the fuel tank and fuel, but also the heavy engine. In the installs people are doing the weight comes out to the same or less and the balance is fine since it's easier to load the batteries lower.

Weight/reliability/long term cost isn't the issue, it's really endurance that kills it as an option for most cruisers.

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Really depends on the type of cruising one does. I have to cross through the Los Angeles shipping lanes just to leave the break and get out into open water. Not only do shipping boats pass through there but also the Navy, commercial fishing and VERY large cruise ships so not having the umph on demand really isnt an option for me.
Yeah, based on that I wouldn't go electric. A petrol will give you a lot more power/duration for getting through that mess and the last thing you want to have to worry about is whether or not bumping from 4 up to 6 knots speed will kill your fuel source too quickly to get you through to safe water.
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