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Old 27-12-2018, 23:05   #16
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Re: Customizing our FP Astréa 42

Quote:
Originally Posted by Luc bulterys View Post
Because I am still waiting for a quote, it is still not sure yet if I will continue with the Integrel. And that was the only reason to go for a 48V battery bank. To keep my options open, I decided to buy 3 WS160SPS-L panels. Together with the Sunpower panels, it will still give me a total output of 1560 Wp. A bit less than my initial setup, but still nice enough. And with only one panel in front of the traveler (for now), this will make positioning rather easy.

So, if I go for the Integrel with a 48V battery bank, I will connect these 3 160Wp panels in series to get around 71Vmpp max. If not, I can keep them all in parallel. In both cases, I expect to connect them to the integrated solar charge regulator of the Mass Combi Ultra.
I also hope that the daylight panels of Wattstunde will still perform acceptable if partly shaded, so the effect of being in series stays less important than for most other panels.

The Sunpower panels have 59Vmpp output and will be in parallel (no matter what choice I’ll make), and will be connected to a Mastervolt SCM60 MPPT-MB solar charge regulator.
Lou,
I had a Salina for 5y.
I didn't have such a high power solar system, but I had 9 flexible walk over panels on the roof.
You will find that not just you, but crew, sail maintenance and other trades will be walking on the roof, occasionally dropping a spanner or a shake from the top of the mast.
I'd suggest you reconsider your choice or rigid panels, flexible have come a long way from the ones I had.

Also I read that you are planning a s/s structure at the back to hold some more panels.
Try and find a Salina and check the rear sun bed/dinghy lift platform.
I found that a really good invention, not sure why FP never proposed on other cats, keeps the dinghy protected from the sun, it keeps it from swinging side to side when underway, and, since the sun bed is rarely used, you can install solar panels on it and occasionally put couscions on it, if someone really wants...

The other think I found is that I never had enough water with my 60l/h watermaker. My next install will be a motor driven 200l/h by Cruisers. They also supply hi-power alternators. Did you check they website?

I have just bought a 16yo L 380 and am about to start a major refit/upgrade, so I am very interested in what you are planning to do, even though I will be finished well before you start. However it still helps to read what others have researched.
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Old 28-12-2018, 03:36   #17
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Re: Customizing our FP Astréa 42

Hi Stefano,

Interesting, your post.
If you are interested, you can find far more details on how I will do it, in the separate thread :
General Info Customizing our FP Astréa 42 - Cruisers & Sailing Forums

I found some pictures of the Salina sun bed/dinghy*lift*platform, you were referring to. If I want to go for more solar in the future, it is something to consider, indeed. It stays low enough for not blocking the view, but maybe too low for hitting your head when arriving by dinghy underneath?! That’s why I made my structure in a way that I can pivot these panels vertically, out of my way. But it is possible that I won’t do that once I am used to it, future will tell.
I like your idea of putting walkable panels under the cushions of the roof-sunbed. I share your idea that it won’t be used that much. And I heard that it’s not a good idea to leave the cushions there, because the attachment can’t prevent them to fly away in stronger winds ! And using it in the tropics, will be rather when the sun is already low, so at a time that is not very profitable anymore for power supply. I will definitely look further into that idea. I expect it could easily add an additional 4-500 Wp.

I would like to hear a bit more about your idea of a 60l/h*watermaker. How many were you on your boat? We never had a watermaker before, and did ocean crossings with less than 500L or an average of less than 25-30L a day for two, even three people. I won’t take the FP-option, but will have it installed ex-factory. Gives me more choice … But I did like the idea of running it directly on the batteries.

Enjoy your refit. Luc
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Old 29-12-2018, 00:19   #18
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Re: Customizing our FP Astréa 42

Quote:
Originally Posted by spiv View Post
Lou,
I had a Salina for 5y.
I didn't have such a high power solar system, but I had 9 flexible walk over panels on the roof.
You will find that not just you, but crew, sail maintenance and other trades will be walking on the roof, occasionally dropping a spanner or a shake from the top of the mast.
I'd suggest you reconsider your choice or rigid panels, flexible have come a long way from the ones I had.

Also I read that you are planning a s/s structure at the back to hold some more panels.
Try and find a Salina and check the rear sun bed/dinghy lift platform.
I found that a really good invention, not sure why FP never proposed on other cats, keeps the dinghy protected from the sun, it keeps it from swinging side to side when underway, and, since the sun bed is rarely used, you can install solar panels on it and occasionally put couscions on it, if someone really wants...

The other think I found is that I never had enough water with my 60l/h watermaker. My next install will be a motor driven 200l/h by Cruisers. They also supply hi-power alternators. Did you check they website?

I have just bought a 16yo L 380 and am about to start a major refit/upgrade, so I am very interested in what you are planning to do, even though I will be finished well before you start. However it still helps to read what others have researched.
I have a l 380 that I put 2 panels on over the davits. Getting the frame done was the hardest part of the project. The company that fabricated them wanted no part of the design. I did the measuring and made a drawing. Checked it about 8 times. Holds 280 watt x 2 panels. Good rule of thumb is to try to get as many ah as watts. If you can get more watts, great. I did not want to put panels on the hardtop.
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Old 30-12-2018, 14:15   #19
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Re: Customizing our FP Astréa 42

Quote:
Originally Posted by Luc bulterys View Post
Hi Stefano,
I found some pictures of the Salina sun bed/dinghy*lift*platform, you were referring to. If I want to go for more solar in the future, it is something to consider, indeed. It stays low enough for not blocking the view, but maybe too low for hitting your head when arriving by dinghy underneath?! That’s why I made my structure in a way that I can pivot these panels vertically, out of my way. But it is possible that I won’t do that once I am used to it, future will tell.
........

I would like to hear a bit more about your idea of a 60l/h*watermaker. How many were you on your boat? We never had a watermaker before, and did ocean crossings with less than 500L or an average of less than 25-30L a day for two, even three people. I won’t take the FP-option, but will have it installed ex-factory. Gives me more choice … But I did like the idea of running it directly on the batteries.

Enjoy your refit. Luc
The Salina sunbed was high enough to allow you to get under without problems AND, to lift the dinghy out of the waves travelling under the bridgedeck at speed, never got it hit by a wave.

I did not like the 60l/h watermaker I had because we were always skimping on water.
My next will be 200l/h so I can have long showers and wash the salt of the boat (and gift some fresh water to cruisers without desal).
Motor driven, yes, I will use diesel, but I can make power at the same time do my washing etc etc.
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