Re: Test Trips with my Solar Electric Eco 5.5
Nice video Phil. Thanks for posting it. David M
On Wednesday, September 15, 2021, 12:49:03 PM PDT, Phil Boyer via groups.io <philaboyer@...> wrote:
Thought I would share a link to some of the test trips I did this summer with my solar electric powered Eco 5.5. I presently only use a Torqeedo Cruise 2.0 motor which is a 5HP equivalent. For next season I will be upgrading to an Elco 20 HP.
Part of the task this winter will be in reducing weight out of the boat such as get rid of the lead acid house batteries to start.
Regards
Phil
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Re: Carbon mast failures and successes
Hi Philip,? What about if using prepreg carbon fiber? Someone in group have tried it?
Cheers, Suntono Pada tanggal Kam, 16 Sep 2021 16.24, Philip Malan via <malan.philip= [email protected]> menulis:
David, To infuse the mast I used a plastic tube inside the mast and then again a tube outside then you seal the ends together. In other words the air pressure/vacuum pushes the two plastic sheets together for 100% seal and no stress on the structure.? I built a 11.6 m mast for a 26 ft sailboat? that weighed 29 kg. If you want I can send you a file of my built. regards Philip Malan
On Wednesday, 15 September 2021, 21:49:03 SAST, David Mancebo via <mancebodesigns= [email protected]> wrote:
I have struggled converting a carbon fiber mast for use on a modified Cataproa. I think the failures and successes are informative for those interested in carbon spars. I used to do this kind of work in my carreer, first as a fabricator and later as a Materials and Process Engineer. So I am embarressed by the failures. I have had successes in the past. For example, here is a cutt-off from a custom carbon mast that was a success:
You can read more about this on my blog:
David M
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Re: Carbon mast failures and successes
Hi Philip
Interesting that you have also built a carbon mast.?
Besides David, there are sure more folks here who are interested.
If you don't mind send your file to the group too.
Cheers
Bernd
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Hi!
Are there any professional builders in northern Europe anyone can recommend? I?m mostly interested in the ECO 5.5 or 520.
Regards
Magnus
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Link.
/g/K-designs-Multihull-Sailboats/album?p=Taken%2C%2C%2C20%2C1%2C120%2C0&jump=1&id=256248
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Hi Bernd I posted some photos about the building of the Kd 900 Italy. I made the photos 2 months ago and now I m finishing to college the tubes... I decided to wait painting the boat because I want to do this work at the end.
Now I m doing the wing mast for the Duo 900 11 metres. I will inform you...
Have a nice day
Domenico
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Re: Carbon mast failures and successes
David, To infuse the mast I used a plastic tube inside the mast and then again a tube outside then you seal the ends together. In other words the air pressure/vacuum pushes the two plastic sheets together for 100% seal and no stress on the structure.? I built a 11.6 m mast for a 26 ft sailboat? that weighed 29 kg. If you want I can send you a file of my built. regards Philip Malan
On Wednesday, 15 September 2021, 21:49:03 SAST, David Mancebo via groups.io <mancebodesigns@...> wrote:
I have struggled converting a carbon fiber mast for use on a modified Cataproa. I think the failures and successes are informative for those interested in carbon spars. I used to do this kind of work in my carreer, first as a fabricator and later as a Materials and Process Engineer. So I am embarressed by the failures. I have had successes in the past. For example, here is a cutt-off from a custom carbon mast that was a success:  You can read more about this on my blog: http://gator2002.temp.domains/~mancegns/2021/09/13/davids-cataproa-2/ David M
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Re: BUILDING DUO 900 ITALY
Hi Domenico
Nice to see the progress. Great work. I like that you changed the aft part on the cockpit
Have fun in Sardinia.
Cheers
Bernd
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Re: Seattle Eco 55 power cat build
Hi Phil
Yes, Phil this is the way to go. I know it is not easy. But do it anyway.
I like your video.?
Cheers
Bernd
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Re: Seattle Eco 55 power cat build
Hi Bernd, as part of my weight loss program I will put the boat on a strict diet! The lead acid batteries will go (130 lbs) the forward bunk seat supports (30 lbs x 2) and the canopy will be hopefully replaced by a canvas and aluminum structure (hoping for 100 lbs off). But one thing I noticed during the build was when I made the 2x4" x 13' (four of them) deck supports that go longitudinal under the deck. They were out of ash and they are very heavy. I think for my use this is way over kill and would like to cut them down to 2" x 2" x 13'. Ash is very strong but heavy.? I can always save the? pieces I cut? and epoxy them back on in the future if I think I went too far. I think this could cut 40 lbs out of the deck. Potentially 330 lbs.??What do you think?
Phil
On Friday, September 10, 2021, 09:39:26 a.m. EDT, Phil Boyer <philaboyer@...> wrote:
Hi Bernd, the wedges on the transom tabs was directly from Ron Mueller as I contacted him vis Small Boat Monthly. He sent me a picture of what he did and explained the wedges. It has improved the steering but I really won't know the effectiveness of them until I get my 20HP Elco motor for next season.
Regards Phil
On Friday, September 10, 2021, 08:47:15 a.m. EDT, Bernd Kohler <ikarus342000@...> wrote:
Hi Phil
I answered principally you already. The improvements are clearly visible. The transom turbulent is significantly less.
The wedges are interesting. Something new for me.? Thank you.
Good thinking to have a lighter canopy.?
But enjoy the boat as long as the weather permits.
Cheers
Bernd
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Test Trips with my Solar Electric Eco 5.5
Thought I would share a link to some of the test trips I did this summer with my solar electric powered Eco 5.5. I presently only use a Torqeedo Cruise 2.0 motor which is a 5HP equivalent. For next season I will be upgrading to an Elco 20 HP.
Part of the task this winter will be in reducing weight out of the boat such as get rid of the lead acid house batteries to start.
Regards
Phil
?
?
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Carbon mast failures and successes
I have struggled converting a carbon fiber mast for use on a modified Cataproa. I think the failures and successes are informative for those interested in carbon spars. I used to do this kind of work in my carreer, first as a fabricator and later as a Materials and Process Engineer. So I am embarressed by the failures. I have had successes in the past. For example, here is a cutt-off from a custom carbon mast that was a success:  You can read more about this on my blog: http://gator2002.temp.domains/~mancegns/2021/09/13/davids-cataproa-2/ David M
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Hello Milko
Had a look at the Nautos winches. Yes the model 16 fits the bill
Cheers
Bernd
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Hello Bernd!
Would a Nautos 16 winch be enough?
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Hi Milko
I am for good and a bit over-dimensioned winches. Use a winch diameter of 80mm.?
Cheers
Bernd
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Hello Bernd! How big are the winches that can be used on the Kd 860?
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Re: just raising Bernd's frustration level
Hi Michael, I will be following your build with interest. The 520 looks like a good compromise out of all these models
regards
Bryan
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Re: Seattle Eco 55 power cat build
Hi David, I have traveled in my first solar electric boat on overcast days and even when it was raining. You always have to plan accordingly to the conditions. But the nice thing about solar electric is I can just slow down and my power draw drops exponentially. As an example in 2017 when traveling the Rideau canal system in Ontario? I had to go 50 km in one day and it was heavily overcast. I putted along at 6km/hr and yes it took all day but I got there with a SOC of 70% ( my batteries were lead acid and 220 amp hr, but usable only to 50% SOC).? My new ECO 5.5 has 10kw of LifePo4 batteries and a 1560 watt solar panel array. I use a 50% efficiency rating on the panels as you don't draw much until mid day. My setup is more like a pontoon boat and the wind affects me. I have gone 55 km this summer in one day and used 50 % of the batteries. I was traveling for a good piece between 5pm and got to my dock at 8pm just getting dark. My average speed was about 9km/hr. So based on that it performed well. I am a long ways from the BC coast (I am just off of Lake Ontario). So 40 nautical miles is 74 km which I could do in my cat again depending on conditions. If I only got 25% from solar and traveled at 8.5km/hr I would be able to go this distance and be at 20% SOC by the end. Each battery cell weighs 8.8 lb x 16 = 140.8 lbs total.
Regards Phil
On Saturday, September 11, 2021, 10:39:54 a.m. EDT, David Mancebo via groups.io <mancebodesigns@...> wrote:
Hi Phil
I live on the Salish Sea and find many days overcast, reducing my solar panel performance. For overcast and drizzle I sized my solar system: drawable battery size 53 amp-hr; solar panel 170 Watt. I use monocrystalline solar panels and an mmpt controller. This has allowd me to use 42 amp-hr on wet overcast days. I may be able to use more, but 42 amp-hr is the most I have ever drawn. My system has never failed to produce enough power despite the weather. Up until now, I have not thought electrical propulsion is very practical where I live but am willing to be convinced.
So here are my questions: What usable range do you anticipate in the common overcast conditions along the BC coast? Do you think your boat would be capable of the trip from Naniamo to Vancouver (roughly 40 nautical miles) on an overcast day with drizzle, including modest currents? How much does your propulsion battery bank weigh?
Thanks David
On Saturday, September 11, 2021, 04:04:27 AM PDT, Phil Boyer via groups.io <philaboyer@...> wrote:
Hi Mike, this is a big experiment. The lead acid batteries are a left over from my first solar electric boat in which I did some long trips on 100% solar power (see my trip videos on the Rideau as well as the Trent Severn). I wanted to keep separate the propulsion batteries from the utility side of things and so used some left over lead acid batteries for what is called house batteries to power lights and any thing else. The main bank is 10kw of LifePo4 cells. Going forward to next season I plan to eliminate the lead acid and use a DC to DC convertor for utility purpose. The boat at 8.5 km/hr draws about 1400 watts, if the sun is shinning I would average during the day about 700 watts per hour and? the batteries would only get depleted by 700 w per hour. When I stop for the day the batteries would continue to charge. It is a balancing act and even though with my new proposed motor an Elco 20HP which would take me up to 27 km/hr I would soon use up the 10kw stored in the batteries. If you are only going out for a few hours then that is ok. I plan to go on a 30 day trip and so will have to do power management to ensure I am charged up by the end of each day. If I have a bad weather day I go slow as I can go 5km/hr and only draw 600 watts.
?The hinged solar panel is for the lead acid batteries only and next season I will be eliminating it. Glad you liked what I did so far but I still have work to do.
Regards Phil
On Friday, September 10, 2021, 09:51:55 p.m. EDT, rattus32 <mike@...> wrote:
Hi Phil, watched the video and "discerned" the Canadia, eh, long before I saw the maple leaf inlay ;-) Nice woodwork!Why the lead-acid batteries for the house bank??
What is the capacity of the motor bank, and what do you estimate you may achieve in range at 10km/h? Also, would you consider hinging the solar panel outward to achieve better insolation as well?
Looks like an excellent weekend cruiser. Jealous. Some day soon...
Mike
Hi Bernd, I have experimented in reducing weight. Taking 235 lbs out with some improvement. I am now looking at replacing the canopy with an aluminum and bimini type.
Phil
On Friday, September 10, 2021, 07:33:47 a.m. EDT, Bernd Kohler < ikarus342000@...> wrote:
Hi Phil. That looks a lot better. A lot less turbulence on the transom. Again, please watch the weight.?
Here is the link to your video. I know there is a lot of interest in what you are doing.
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Re: Seattle Eco 55 power cat build
Hi Phil
I live on the Salish Sea and find many days overcast, reducing my solar panel performance. For overcast and drizzle I sized my solar system: drawable battery size 53 amp-hr; solar panel 170 Watt. I use monocrystalline solar panels and an mmpt controller. This has allowd me to use 42 amp-hr on wet overcast days. I may be able to use more, but 42 amp-hr is the most I have ever drawn. My system has never failed to produce enough power despite the weather. Up until now, I have not thought electrical propulsion is very practical where I live but am willing to be convinced.
So here are my questions: What usable range do you anticipate in the common overcast conditions along the BC coast? Do you think your boat would be capable of the trip from Naniamo to Vancouver (roughly 40 nautical miles) on an overcast day with drizzle, including modest currents? How much does your propulsion battery bank weigh?
Thanks David
On Saturday, September 11, 2021, 04:04:27 AM PDT, Phil Boyer via groups.io <philaboyer@...> wrote:
Hi Mike, this is a big experiment. The lead acid batteries are a left over from my first solar electric boat in which I did some long trips on 100% solar power (see my trip videos on the Rideau as well as the Trent Severn). I wanted to keep separate the propulsion batteries from the utility side of things and so used some left over lead acid batteries for what is called house batteries to power lights and any thing else. The main bank is 10kw of LifePo4 cells. Going forward to next season I plan to eliminate the lead acid and use a DC to DC convertor for utility purpose. The boat at 8.5 km/hr draws about 1400 watts, if the sun is shinning I would average during the day about 700 watts per hour and? the batteries would only get depleted by 700 w per hour. When I stop for the day the batteries would continue to charge. It is a balancing act and even though with my new proposed motor an Elco 20HP which would take me up to 27 km/hr I would soon use up the 10kw stored in the batteries. If you are only going out for a few hours then that is ok. I plan to go on a 30 day trip and so will have to do power management to ensure I am charged up by the end of each day. If I have a bad weather day I go slow as I can go 5km/hr and only draw 600 watts.
?The hinged solar panel is for the lead acid batteries only and next season I will be eliminating it. Glad you liked what I did so far but I still have work to do.
Regards Phil
On Friday, September 10, 2021, 09:51:55 p.m. EDT, rattus32 <mike@...> wrote:
Hi Phil, watched the video and "discerned" the Canadia, eh, long before I saw the maple leaf inlay ;-) Nice woodwork!Why the lead-acid batteries for the house bank??
What is the capacity of the motor bank, and what do you estimate you may achieve in range at 10km/h? Also, would you consider hinging the solar panel outward to achieve better insolation as well?
Looks like an excellent weekend cruiser. Jealous. Some day soon...
Mike
Hi Bernd, I have experimented in reducing weight. Taking 235 lbs out with some improvement. I am now looking at replacing the canopy with an aluminum and bimini type.
Phil
On Friday, September 10, 2021, 07:33:47 a.m. EDT, Bernd Kohler < ikarus342000@...> wrote:
Hi Phil. That looks a lot better. A lot less turbulence on the transom. Again, please watch the weight.?
Here is the link to your video. I know there is a lot of interest in what you are doing.
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Re: Seattle Eco 55 power cat build
Hi Mike
Have you made progress with your build? Tell us
Cheers
Bernd
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Bernd Kohler
Philip Malan
bryanandmarycox