Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 15-11-2015, 12:32   #1
Registered User

Join Date: Apr 2007
Location: New England
Boat: lagoon 380 s2
Posts: 487
Mounting solar panels

Sorry for yet another solar thread, but wanted some input from Lagoon owners.

I plan on adding solar to my 380. I have come to the conclusion that the first place to add them would be over the davits.

But I need some help on hardware to mount, how big can I go, how to mount. E.g., did you actually use the davits to mount to or attach to stanchions, do you go wider than the davits, if so how much and is it an issue, etc. I don't plan on having to have the panels adjust for sun, just have them mounted and catch what I can.

Not sure how wide I can go, this will determine the amount of power. I know I can get about 400 watts on the 3 Kyoceras 140s, not sure if I can get 3 or the 225 or 2 320s to fit there on my boat.

Any pictures would help as well. Also asking in the lagoon yahoo group...

Thanks.
__________________

__________________
jbinbi is online now   Reply With Quote
Old 15-11-2015, 12:52   #2
Moderator
 
nigel1's Avatar

Cruisers Forum Supporter

Join Date: Oct 2009
Location: Manchester, UK
Boat: Beneteau 473
Posts: 5,126
Re: Mounting solar panels

Not a Lagoon owner, but this set up may give you some ideas.
I have a 30mm stainless steel tubular mounted across the two davits. One picture shows the davits without the panels mounted.

On the panels, I fitted aluminium flat bar to the underside of the frame, (running fore and aft) and used these fittings to mount the panels to the cross bar

DRB Innovators - High Quality Stainless Steel Boat Products
Attached Thumbnails
Click image for larger version

Name:	davit (1).jpg
Views:	406
Size:	396.2 KB
ID:	113062   Click image for larger version

Name:	Dunmore East 6 (Large).JPG
Views:	406
Size:	153.4 KB
ID:	113063  

__________________

__________________
Nigel
Beneteau 473
Manchester, UK
nigel1 is offline   Reply With Quote
Old 15-11-2015, 15:00   #3
Registered User
 
seelka's Avatar

Join Date: Nov 2013
Location: Karlsruhe / Germany
Boat: Lagoon 380 S2 (2009), Dehler 37-S (1993; FOR SALE)
Posts: 14
Re: Mounting solar panels

I've got 5 x "Sunpower 100Wp" panels over the davits, all switched in parallel to minimize shading effects. Two big panels may give even more nominal power (and possibly be cheaper), but if one is even just partially shaded by the rig, it's virtually gone during that period. Even worse so if you switch them in series, which gives lower amps/higher voltage and hence better efficiency - - - on a roof for instance, with no trees or similar to throw shades... But partially shaded, the whole serial array is gone.

I used the davit pulley axes to mount the frame. And I can only encourage you to spend the effort to support it with telescopic stanchions on the other side (mounted on the small rim above the raft compartment): I've seen up to 15 amps more coming in when inclined towards the afternoon sun.

But I must admit I'm addicted to maximizing solar energy collection - - each outer panel in the frame is also inclinable sideways...
Attached Thumbnails
Click image for larger version

Name:	2014-10-02+174840.jpg
Views:	404
Size:	364.6 KB
ID:	113073   Click image for larger version

Name:	2014-07-29+163852a.jpg
Views:	382
Size:	340.9 KB
ID:	113074  

Click image for larger version

Name:	2014-09-25+093340.jpg
Views:	384
Size:	419.2 KB
ID:	113075   Click image for larger version

Name:	2014-09-29+154136.jpg
Views:	365
Size:	382.3 KB
ID:	113076  

Click image for larger version

Name:	P1040493.jpg
Views:	415
Size:	423.1 KB
ID:	113077  
__________________
seelka is offline   Reply With Quote
Old 15-11-2015, 17:36   #4
Registered User

Join Date: Apr 2007
Location: New England
Boat: lagoon 380 s2
Posts: 487
Re: Mounting solar panels

Excellent. Thank you both.

Sent from my SM-G900V using Cruisers Sailing Forum mobile app
__________________
jbinbi is online now   Reply With Quote
Old 16-11-2015, 13:41   #5
Registered User
 
careka's Avatar

Join Date: Apr 2009
Location: Egersund,Norway
Boat: Lagoon380 Comfort#637
Posts: 702
Images: 2
Send a message via Skype™ to careka
Re: Mounting solar panels

we have 570 watt on the back(3 x 190) Victron , if you look at bit back on our blogg there are many pictures. Lagoon 380 Careka

we also have 2kw inverter, and we dont need shorepower. 780 amp 12v bank.
__________________
careka is offline   Reply With Quote
Old 16-11-2015, 14:56   #6
Senior Cruiser
 
StuM's Avatar

Cruisers Forum Supporter

Join Date: Nov 2013
Location: Port Moresby,Papua New Guinea
Boat: FP Belize Maestro 43
Posts: 6,520
Re: Mounting solar panels

Quote:
Originally Posted by careka View Post
we have 570 watt on the back(3 x 190) Victron , if you look at bit back on our blogg there are many pictures. Lagoon 380 Careka

we also have 2kw inverter, and we dont need shorepower. 780 amp hr 12v bank.


Amps v Amp hours v Amps/Hr
__________________
StuM is online now   Reply With Quote
Old 21-11-2015, 23:08   #7
Registered User
 
Scottster's Avatar

Join Date: Feb 2012
Location: Sidney, B.C.
Boat: Lagoon L400S2
Posts: 239
Re: Mounting solar panels

I just ordered 5 - 265 watt panels for my L400
I will be duplicating Rotter's set up.
They measure 72" x 40" and will be supported just behind my traveller and out over my dingy.
Great shade and rain protection as well.
1325 watts will get the job done


Sent from my iPad using Cruisers Sailing Forum
__________________
Scottster is offline   Reply With Quote
Old 22-11-2015, 02:15   #8
Registered User

Join Date: Aug 2011
Posts: 313
Re: Mounting solar panels

Hello jbinbi,
we have a 2005 410S2. I had a frame made to fit two 140 watt panels that is attached to the davits. The frame has an arm that extends from the frame to the davits and through bolted using the bolt through the pulley wheels. Very easy to extend the bolts and put new longer bolts through.
At the base of the davits I had a set of half collars made that fit around the base of the davits and when tightened fit snugly around the davit base. I then had telescopic arms made that ride vertically from the collar mount to the desired level where they are then attached to the frame. Its been on for 18 months now and showing no signs of fatigue etc. I used polished aluminium angle for the frame and polished aluminium for the telescopic arms. Works a treat and unless point it out that its not stainless no one has ever noticed. Don't spend a fortune on stainless when there are other products that are better suited to the job and look good at the same time. When using the alloy collars I insulated them against the stainless with Duralec and there are absolutely no signs of any adverse reactions. Will take pictures in morning and post.


Greg H
SV Sunshine
__________________
ozsailer is offline   Reply With Quote
Old 22-11-2015, 02:53   #9
Registered User

Join Date: Oct 2015
Location: Outer Banks NC
Boat: Cape Dory 36
Posts: 35
Re: Mounting solar panels

I really dislike how panels make a boat look sometimes, I know they are a necessity for most cruisers.
__________________
OBXSkipper is offline   Reply With Quote
Old 22-11-2015, 09:18   #10
Registered User
 
Scottster's Avatar

Join Date: Feb 2012
Location: Sidney, B.C.
Boat: Lagoon L400S2
Posts: 239
Re: Mounting solar panels

These are some pics of Roetter's and soon to be my solar install
I have a L400, Roetter's has a L450 so he has 6 panels as I will have 5.
Additionally Roetter's has additional side panels giving him 1,800w, I will have 1,300w
Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1448212629.182669.jpg
Views:	380
Size:	63.5 KB
ID:	113512Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1448212641.828720.jpg
Views:	373
Size:	66.5 KB
ID:	113513Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1448212654.830600.jpg
Views:	375
Size:	59.7 KB
ID:	113514Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1448212664.447137.jpg
Views:	365
Size:	65.2 KB
ID:	113515
Very simplistic and proven.
Thanks Rolf


Sent from my iPad using Cruisers Sailing Forum
__________________
Scottster is offline   Reply With Quote
Old 22-11-2015, 09:35   #11
Registered User

Join Date: Apr 2007
Location: New England
Boat: lagoon 380 s2
Posts: 487
Re: Mounting solar panels

Quote:
Originally Posted by ozsailer View Post
Hello jbinbi,
we have a 2005 410S2. I had a frame made to fit two 140 watt panels that is attached to the davits. The frame has an arm that extends from the frame to the davits and through bolted using the bolt through the pulley wheels. Very easy to extend the bolts and put new longer bolts through.
At the base of the davits I had a set of half collars made that fit around the base of the davits and when tightened fit snugly around the davit base. I then had telescopic arms made that ride vertically from the collar mount to the desired level where they are then attached to the frame. Its been on for 18 months now and showing no signs of fatigue etc. I used polished aluminium angle for the frame and polished aluminium for the telescopic arms. Works a treat and unless point it out that its not stainless no one has ever noticed. Don't spend a fortune on stainless when there are other products that are better suited to the job and look good at the same time. When using the alloy collars I insulated them against the stainless with Duralec and there are absolutely no signs of any adverse reactions. Will take pictures in morning and post.


Greg H
SV Sunshine
Greg, thanks. If you take any pics, would love to see them.
__________________
jbinbi is online now   Reply With Quote
Old 08-12-2015, 21:19   #12
Registered User
 
blackcatscooter's Avatar

Join Date: May 2013
Boat: Lagoon 380 S2
Posts: 18
Re: Mounting solar panels

We have 3 panels, Kyocera 245W each, across the back over the davits on our 380 S2. We have a custom made frame with the panels mounted almost as high as the bimini top so they don't block the view. With 765 AH battery bank, 735 W solar, and a 2 kW inverter, power is taken care of. If there are multiple days of rain, then we also have a generator to help keep the batteries topped up.


Sent from my iPad using Cruisers Sailing Forum
__________________
blackcatscooter is offline   Reply With Quote
Old 15-02-2016, 23:48   #13
Registered User
 
Scottster's Avatar

Join Date: Feb 2012
Location: Sidney, B.C.
Boat: Lagoon L400S2
Posts: 239
Re: Mounting solar panels

Here is mineClick image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1455608806.816035.jpg
Views:	370
Size:	51.9 KB
ID:	119104Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1455608820.585892.jpg
Views:	380
Size:	49.1 KB
ID:	119105Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1455608839.402114.jpg
Views:	378
Size:	51.4 KB
ID:	119106Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1455608852.967374.jpg
Views:	304
Size:	38.7 KB
ID:	119107Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1455608902.438895.jpg
Views:	298
Size:	170.1 KB
ID:	119108


Sent from my iPad using Cruisers Sailing Forum
__________________
Scottster is offline   Reply With Quote
Old 16-02-2016, 01:05   #14
Registered User

Join Date: Sep 2014
Location: Sydney
Boat: Lagoon 400
Posts: 1,034
Re: Mounting solar panels

doesnt look too bad, actually.

question from coastal cruiser : why do you need so much power ?
__________________
arsenelupiga is offline   Reply With Quote
Old 16-02-2016, 06:59   #15
Registered User

Join Date: Apr 2007
Location: New England
Boat: lagoon 380 s2
Posts: 487
Re: Mounting solar panels

scottster, thanks, doesn't work for me as the 380 has the traveller in the cockpit so I need to mount over davits. but your looks great!

Never a thing as too much power , ESPECIALLY if you are going to do extended cruising and want some amenities. From reading his other posts, I don't want to put words in his mouth, but I thought he wanted to do that. Refrig, washing machine, auto pilot,watermaker, electric windlass, etc. when you are not docking for 3 weeks all use lots of amps. You don't always get sunny days, so more panels help out. And cost of a panel is under $300, lasts for 5 to 10 years you hope, so your cost per day vs. what it gives you is a great bargain IMO.

I am just thinking of being out for 3 days without plugging in and wondering if 420Ah battery bank and 550w solar will be enough....
__________________

__________________
jbinbi is online now   Reply With Quote
Reply

Tags
panels, solar, solar panels

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mounting Solar Panels oldvarnish Electrical: Batteries, Generators & Solar 21 27-04-2017 11:17
Mounting Flexible Solar Panels to Lifelines zboss Electrical: Batteries, Generators & Solar 11 31-03-2014 20:45
Suggestions for Mounting Solar Panels SV Demeter Electrical: Batteries, Generators & Solar 10 27-06-2011 09:55
Solar Panels Mounting Place Jaegerstc Multihull Sailboats 2 12-12-2009 08:06
Mounting Solar Panels on Bimini waterdog Electrical: Batteries, Generators & Solar 7 23-03-2009 06:40



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 01:11.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.