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Diesel - electric drive - an article pondering the "why nots"

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Created by Seebreasy73 Two weeks ago, 3 Jan 2019
Seebreasy73
QLD, 291 posts
3 Jan 2019 6:40PM
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www.morganscloud.com/2013/04/23/electric-or-diesel-electric-drives-for-voyaging-boats/

there has been a few discussions on similar subjects and the article above has some great points, thought it was worth the share.

livinglife
QLD, 8 posts
12 Jan 2019 2:57PM
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I have a 9.1m sailboat and fitted an electric motor. Ii have a very limited budget and the electric motors works. I did it for less than Au$8k. The best decision. No fumes, no noise, clean bilge no pollution, no fuel blockages, no dirty fuel.. I do not understand why so many are against electric engines.
I am happy to answer any queries about my electric experience.

I can motor sail for months without needing to go to port to re-fuel. When I go to remote places I know I am leaving it better than I found it. Not leaving my dirty pollution and destroying the very thing I find so beautiful.

motor sailing becomes a completely different experience. having the electric motor tick over to help the sail. You can point into the wind better without worrying about fumes choking the cook. Knowing it is costing nothing without adding engine hours.

I have 1kW of solar fitted which produces more than enough to keep the batteries charged. Also have enough stored power to run a draw fridge, a small freezer, microwave and various small electric appliances.

Best of all when I leave port and look back to all the smog and pollution hovering over the cities, I am proud I have not contributed and not just complained about it.

UncleBob
NSW, 336 posts
12 Jan 2019 4:06PM
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Select to expand quote
livinglife said..
I have a 9.1m sailboat and fitted an electric motor. Ii have a very limited budget and the electric motors works. I did it for less than Au$8k. The best decision. No fumes, no noise, clean bilge no pollution, no fuel blockages, no dirty fuel.. I do not understand why so many are against electric engines.
I am happy to answer any queries about my electric experience.

I can motor sail for months without needing to go to port to re-fuel. When I go to remote places I know I am leaving it better than I found it. Not leaving my dirty pollution and destroying the very thing I find so beautiful.

motor sailing becomes a completely different experience. having the electric motor tick over to help the sail. You can point into the wind better without worrying about fumes choking the cook. Knowing it is costing nothing without adding engine hours.

I have 1kW of solar fitted which produces more than enough to keep the batteries charged. Also have enough stored power to run a draw fridge, a small freezer, microwave and various small electric appliances.

Best of all when I leave port and look back to all the smog and pollution hovering over the cities, I am proud I have not contributed and not just complained about it.


You managed to install an electric motor and controls, battery bank, solar and controls all for less than A$8000.00 ? Have to ask, what size motor, battery bank and panel size did you use.

dism
NSW, 640 posts
12 Jan 2019 5:12PM
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Found livinglifes blog (via profile link) on elec engine at www.livingourlifestyle.com/diy-electric-vessel

@livinglife - have only skimmed article but didn't see - what brand/type and supplier sells the elec engine package?

Wander66
QLD, 194 posts
12 Jan 2019 4:49PM
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dism said..
Found livinglifes blog (via profile link) on elec engine at www.livingourlifestyle.com/diy-electric-vessel

@livinglife - have only skimmed article but didn't see - what brand/type and supplier sells the elec engine package?


Thunderstruck motors in the US have 10kW 48v kitsyou can buy online for $2012 US

www.thunderstruck-ev.com/sevcon-brushless-sailboat-kit-10.5kw.html

Craig66
NSW, 1518 posts
12 Jan 2019 7:47PM
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Select to expand quote
Wander66 said..


dism said..
Found livinglifes blog (via profile link) on elec engine at www.livingourlifestyle.com/diy-electric-vessel

@livinglife - have only skimmed article but didn't see - what brand/type and supplier sells the elec engine package?




Thunderstruck motors in the US have 10kW 48v kitsyou can buy online for $2012 US

www.thunderstruck-ev.com/sevcon-brushless-sailboat-kit-10.5kw.html



Left field question,
Owner of a cat needs to replace one blown diesel engine.
All ready has good solar set up, wind generator, bank of batteries etc.

Seems that an electric install would be less $$ and then you have option of running silent on a motor sail.
Or would it be too much of a miss match when trying to control turns in tight spaces on both engines?

DAMA
QLD, 211 posts
12 Jan 2019 8:43PM
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Looks like an electric system from ev power in west australia
www.ev-power.com.au/

there is a you tube vid under projects on the site also

Madmouse
157 posts
12 Jan 2019 7:46PM
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Select to expand quote
livinglife said..
I have a 9.1m sailboat and fitted an electric motor. Ii have a very limited budget and the electric motors works. I did it for less than Au$8k. The best decision. No fumes, no noise, clean bilge no pollution, no fuel blockages, no dirty fuel.. I do not understand why so many are against electric engines.
I am happy to answer any queries about my electric experience.

I can motor sail for months without needing to go to port to re-fuel. When I go to remote places I know I am leaving it better than I found it. Not leaving my dirty pollution and destroying the very thing I find so beautiful.

motor sailing becomes a completely different experience. having the electric motor tick over to help the sail. You can point into the wind better without worrying about fumes choking the cook. Knowing it is costing nothing without adding engine hours.

I have 1kW of solar fitted which produces more than enough to keep the batteries charged. Also have enough stored power to run a draw fridge, a small freezer, microwave and various small electric appliances.

Best of all when I leave port and look back to all the smog and pollution hovering over the cities, I am proud I have not contributed and not just complained about it.


That sound awesome. Perhaps the tide has turned. Love to hear more.

sirgallivant
NSW, 1327 posts
13 Jan 2019 6:48AM
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There is something fishy with the claim of almost unlimited power here, it just does not add up, imo.


Check out "sailing Uma" on utube!

LMY
NSW, 184 posts
13 Jan 2019 2:17PM
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Select to expand quote
livinglife said..
I have a 9.1m sailboat and fitted an electric motor. Ii have a very limited budget and the electric motors works. I did it for less than Au$8k. The best decision. No fumes, no noise, clean bilge no pollution, no fuel blockages, no dirty fuel.. I do not understand why so many are against electric engines.
I am happy to answer any queries about my electric experience.

I can motor sail for months without needing to go to port to re-fuel. When I go to remote places I know I am leaving it better than I found it. Not leaving my dirty pollution and destroying the very thing I find so beautiful.

motor sailing becomes a completely different experience. having the electric motor tick over to help the sail. You can point into the wind better without worrying about fumes choking the cook. Knowing it is costing nothing without adding engine hours.

I have 1kW of solar fitted which produces more than enough to keep the batteries charged. Also have enough stored power to run a draw fridge, a small freezer, microwave and various small electric appliances.

Best of all when I leave port and look back to all the smog and pollution hovering over the cities, I am proud I have not contributed and not just complained about it.


Hi livinglife,

could you please provide a bit more information so that we can understand how this works for you?

The thing that I do not understand is the available energy over a couple of days, rather than short term power. Ie "motor sailing for months".

From your blog, you have a 10kW motor, 9.5kWhr of batteries and 1kW of solar.

So you run the motor at, say, 25% power for four hours on a dull day and the batteries are 100% flat, not great for the battery life, but ignore that for the sake of the discussion.

Or, run late for a tide target and run the motor at 100% power for an hour to catch up and the batteries are flat.

You then need to recharge. In NSW I get about 1500watts-hrs from a 300Watt set of panels. The sun is sunnier in Qld, so allow 2000 for 300 watts in Qld. That gives 6.7 kW-hr per day for you panels. So after a four hour motor sail you need to stop and re- charge for a day or more . This assumes that you use no other power for the fridge, lights etc.

Am I missing something here with my assumptions, how are you using the boat to make this work?

thanks

dism
NSW, 640 posts
13 Jan 2019 3:43PM
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Wonder what the magic formula is for pairing a portable diesel generator with this system as an amp backup (for those coast hopping 2 day motor/sails)?

Sometimes you just need more than 4hrs+ motoring, but seems alot other benefits to EV (and it's just a matter of time till its the gold standard).

UncleBob
NSW, 336 posts
14 Jan 2019 12:05PM
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Select to expand quote
UncleBob said..

livinglife said..
I have a 9.1m sailboat and fitted an electric motor. Ii have a very limited budget and the electric motors works. I did it for less than Au$8k. The best decision. No fumes, no noise, clean bilge no pollution, no fuel blockages, no dirty fuel.. I do not understand why so many are against electric engines.
I am happy to answer any queries about my electric experience.

I can motor sail for months without needing to go to port to re-fuel. When I go to remote places I know I am leaving it better than I found it. Not leaving my dirty pollution and destroying the very thing I find so beautiful.

motor sailing becomes a completely different experience. having the electric motor tick over to help the sail. You can point into the wind better without worrying about fumes choking the cook. Knowing it is costing nothing without adding engine hours.

I have 1kW of solar fitted which produces more than enough to keep the batteries charged. Also have enough stored power to run a draw fridge, a small freezer, microwave and various small electric appliances.

Best of all when I leave port and look back to all the smog and pollution hovering over the cities, I am proud I have not contributed and not just complained about it.



You managed to install an electric motor and controls, battery bank, solar and controls all for less than A$8000.00 ? Have to ask, what size motor, battery bank and panel size did you use.


Having looked at your site I have a few further questions. What size 12 volt batteries (ah, not physical) what physical size solar panels and how did you fit four of them to a 9m boat without shading etc so that they produce more than enough power to run the boat and motor sail for months, and to me most importantly, how do you expect to maintain a secondhand agm bank that is already 5 years old in a condition that it will last another 5 to 7 years? All those that I know who have agm batteries on their vessels are lucky to achieve much more than 4 years in total. Agm are great batteries if you can maintain the soc at or near 100%, very difficult to do on a sailboat. They are excellent for use in UPS systems because they are kept at the optimal charge all the time.
I wish you well and hope that all works out for you as you hope.

Trek
NSW, 807 posts
Tuesday , 15 Jan 2019 8:56AM
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I once again spent a few hours fixing alarm problems with my old Volvo 2003 and getting rid of it for electric is very appealing. I think 50 percent of my boat maintenance has been diesel which says how bad they can be. It's WAY out of proportion. UncleBob I presume Livinglifes ratio of motoring to sailing must be really low. I know if I only motored for getting on and off moorings it would work for me but motoring bay to bay it wouldn't. I hope he comes back and tells us more.



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"Diesel - electric drive - an article pondering the "why nots"" started by Seebreasy73