Jayco RV Owners Forum
 


Reply
 
Thread Tools Display Modes
 
Old 02-16-2012, 10:06 AM   #1
Junior Member
 
Join Date: Aug 2011
Posts: 2
Solar panels on roof of HTT

I have a 2009 Jayco 21M and would like to know if anyone has every mounted solar panels on the roof. Jayco says they do not recommend it as it is not an option on that model. Since the roof is very thin I'm thinking of making a stand to set the panel on the ground. I'm going to be 9-14 days off grid this spring. Any help from someone with experience with this would be greatly appreciated.
__________________

jvantassell is offline   Reply With Quote
Old 02-16-2012, 11:16 AM   #2
Senior Member
 
Seann45's Avatar
 
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 9,701
ALL RV roofs are thin... I run full length "L" brackets with 4 screws in the base for mounting mine.. (on each side) then attach each panel with a nut and bolt at each corner... this allows me to tilt the panel for max power in the winter... (winter camping NOW if you can call +70F winter)
__________________

__________________
Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
175 days boondocking in 2017
215/2016, 211/2015, 196/14, 247/13, 193/12

Seann45 is offline   Reply With Quote
Old 02-17-2012, 06:53 PM   #3
Senior Member
 
Join Date: Apr 2011
Posts: 136
Just curious to know how many watts worth of panels you intend to use. I use a 1.5w panel to maintain the battery while the camper is in Summer storage between trips. Thinking about moving up to 5w to extend trips off the grid.
RustyFairmount is offline   Reply With Quote
Old 02-20-2012, 09:05 AM   #4
Member
 
Join Date: Jul 2011
Posts: 35
I have an 85 watt panel. I kept it portable in case the trailer does not get any sun at all. We camp off grid for 3-4 weeks at a time. I simply added telescoping legs. There is a rod running between the legs for stability, and twine or a thin chain as a preventer to keep the legs from going back too far. It's great, you can move it around to the sun. At the end of the day. you can position it to get the fist rays next morning. Hope this helps.
Lounsy

Lounsy is offline   Reply With Quote
Old 02-20-2012, 07:11 PM   #5
Moderator Emeritus
 
Rustic Eagle's Avatar
 
Join Date: Apr 2011
Location: Michigan
Posts: 7,371
Quote:
Originally Posted by RustyFairmount View Post
snip..... I use a 1.5w panel to maintain the battery while the camper is in Summer storage between trips. Thinking about moving up to 5w to extend trips off the grid.
Rusty,

The solar system is intended to charge the battery(s), and if you plan to do some "off grid" camping, then the solar system should be sized based on how much energy one uses and the amp size of the battery(s). I tend to agree with others that 80 to 100 watt solar panel minimum for every 100 amps of battery storage.

A 5W solar panel will "eventually" charge the battery, but under extended "off grid" conditions IMO the 5W panel will disappoint.

Here is a good thread for some additional data: https://www.jaycoowners.com/showthrea...t=solar&page=2

Don't forget, depending on where one camps, the best conditions may provide only 5-6 hours of optimum sun light.

Just food for thought.

Bob
__________________

2016 GM 2500HD 6.0L/4.10
2018 Jay Flight 24RBS
2005 Jayco Eagle 278FBS (retired)
1999 Jayco Eagle 246FB (retired)
Reese HP Dual Cam (integrated sway control)
Rustic Eagle is offline   Reply With Quote
Old 02-20-2012, 09:29 PM   #6
Senior Member
 
Join Date: Apr 2011
Posts: 136
Quote:
Originally Posted by Rustic Eagle View Post
Rusty,

The solar system is intended to charge the battery(s), and if you plan to do some "off grid" camping, then the solar system should be sized based on how much energy one uses and the amp size of the battery(s). I tend to agree with others that 80 to 100 watt solar panel minimum for every 100 amps of battery storage.

A 5W solar panel will "eventually" charge the battery, but under extended "off grid" conditions IMO the 5W panel will disappoint.

Here is a good thread for some additional data: https://www.jaycoowners.com/showthrea...t=solar&page=2

Don't forget, depending on where one camps, the best conditions may provide only 5-6 hours of optimum sun light.

Just food for thought.

Bob
Thanks. I'll continue reading (including the link you provided). My charging needs are really limited to lighting, water pump, and ignition for fridge and hot water tank. With LED's at 3 watts each, and the water pump at 90 watts, I was hoping (yeah, very unscientific) that 4 hours of good sunlight and a 5 watt panel would be enough.

My math went like this: 5 watt panel for 4 hours = 20 watt-hours of energy. Assuming a 100% efficient battery, that's 1200 watt-minutes. Wouldn't that mean the pump could run for 13 minutes off that charge (moving 37 gallons of water)? Or 2 lights for 200 minutes?

What am I missing? Furnace and inverters are hungry. I understand that if I want to operate those I'd need a larger panel.

And...if I need a much larger panel...I'll refer back to this thread to understand how to safely mount it on the roof!
RustyFairmount is offline   Reply With Quote
Old 02-20-2012, 11:35 PM   #7
Senior Member
 
Join Date: Jul 2011
Location: Albuquerque
Posts: 261
Quote:
Originally Posted by RustyFairmount View Post
Just curious to know how many watts worth of panels you intend to use. I use a 1.5w panel to maintain the battery while the camper is in Summer storage between trips. Thinking about moving up to 5w to extend trips off the grid.
Hi Rusty - just so you know 1.5W is enough to maintain typical batteries - assuming they are already charged when they are stored. 5w isn't much better and over a month stay may keep a light on for an extra hour. I'm probably exaggerating a bit, but you get the idea.

It takes quite a bit more to be useful when camping. I have a 55w panel that I'm trying to decide what to do with as my research shows it probably won't give me any positive charge on my 2x GC-2 batteries. I may run them down a bit and see how it does, but he "guru's" tell me it won't work. We'll see..

Good luck!

-Chak
__________________
- 2005 Dodge 2500 CTD 6spd manual
- 2010 Starcraft Autumn Ridge 246RKS
- 2003 Casita Spirit Deluxe (sold)

My Write-up on managing 12V and batteries
LED Bulbs and what I did
Chakara is offline   Reply With Quote
Old 02-21-2012, 08:09 AM   #8
Senior Member
 
Join Date: Apr 2011
Posts: 136
Good luck to you all, too. I can't wait for the weather to break up here in Michigan so I can go out and "test" my setup, too. Come to think of it, I have some new lawn chairs and can-cozy's to "test" as well. :-)
RustyFairmount is offline   Reply With Quote
Old 02-21-2012, 03:57 PM   #9
Senior Member
 
Seann45's Avatar
 
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 9,701
Quote:
Originally Posted by RustyFairmount View Post
Good luck to you all, too. I can't wait for the weather to break up here in Michigan so I can go out and "test" my setup, too. Come to think of it, I have some new lawn chairs and can-cozy's to "test" as well. :-)
Send em to my camp here in the DSW... I will evaluate them and report back... ohh by the way make sure the can cozies are accompanied by the product you with them to keep cool... different products might work differently...
__________________
Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
175 days boondocking in 2017
215/2016, 211/2015, 196/14, 247/13, 193/12

Seann45 is offline   Reply With Quote
Old 02-22-2012, 07:46 AM   #10
Junior Member
 
Join Date: Aug 2011
Posts: 2
Thanks for all of those suggestions and comments. I was off web for a few days. I'm planing on using a 100W panel and like the idea of using a stand to optimize sun exposure. I have converted to all LED lights (at least the ones I need to use), the biggest draw will be the furnace if I hit cold weather.
__________________

jvantassell is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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


» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 11:40 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.