Home » Public Forums » GMCnet » [GMCnet] Ebay (2) 100w foldable panels
| [GMCnet] Ebay (2) 100w foldable panels [message #156011] |
Sun, 08 January 2012 20:08  |
glwgmc
Messages: 1014
Registered: June 2004
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An interesting observation about solar panels. They are in production all over the world and prices are coming down rapidly----so is quality in some cases. Most new technology items go through a cycle that they are not used at all until they are within 10x the price/performance of the competing technology they are trying to replace. Once under than "magic" threshold then many players get into the game and try to chase down the price/performance curve faster than the next guy. That is where we are with solar panels right now. The last thing you want to do is buy based on price per watt. There are just too many ways to game the price per watt number. You have to consider all the relevant performance specs and even then you need to be really knowledgeable to keep from being flim-flamed by the marketing hype. Watch Quartzite this year. My guess is you will see a flood of cheap sounding solar panels and LED lights. Buyer beware. Best bet is to buy from well know name su
ppliers who have been around a long time, who are likely to be around a long time from now and who offer reasonable performance warrantees. Absent that, you are the beta tester for a lot of this stuff. I love new tech as much as anyone and I have no trouble living on the bleeding edge, but I know that is where I am so am comfortable there...........
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed and hand crafted in the 1907 former Masonic Temple building in historic Kerby, OR
Visitors always welcome!
glwork@mac.com
http://jerrywork.com
541-592-5360
www.southernoregonguild.org
www.siskiyouguild.org
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Message: 17
Date: Sun, 8 Jan 2012 13:59:41 -0600
From: Tom Eckert <gmcrv1@gmail.com>
Subject: Re: [GMCnet] Ebay (2) 100w foldable panels
To: gmclist@temp.gmcnet.org
Message-ID:
<CAGSVdWV_5Ristd-AN_4W3WNncQRxQzep_jwJ4uLb3WbmR1o5QQ@mail.gmail.com>
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Has anyone seen these?
http://www.sunelec.com/?gclid=CJSWsMmawa0CFQmd7QodPzQRAw
> From $.74 per watt.
Comments...
Thanks,
Tom Eckert N2VWN
73 Glacier
Oakland, TN
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Jerry & Sharon Work
78 Royale
Kerby, OR
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| Re: [GMCnet] Ebay (2) 100w foldable panels [message #156022 is a reply to message #156011] |
Sun, 08 January 2012 22:34  |
gmcrv1
Messages: 839
Registered: August 2007
Location: Memphis
Karma: -1
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Senior Member |
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Jerry,
I am fortunate enough to have come across some DOD (Department of Defense)
surplus solar panels. Probably too small for serious power, but I use them
to charge an RV/Marine battery and power several LEDs that light a small
shop extremely well. The LEDs I use are only available in large quantities
- but are very, very bright and are marketed only commercially by Osram
Lamp, GE Commercial, Sylvania Commercial, and a few others. Jobber cost is
around $30 per running foot. Three 8" sections provide a whiter brighter
light then two 8' flourescent shop lamps. All come with at least a 10 year
warranty. A couple have lifetime warranty.
You're right, you get what you pay for.
To re-lamp a 26' coach would cost approximately $500-600. Much less if you
use the scraps from production. That cost includes adding lights at all
service and storage doors and cabinets. Energy consumption is 75-80% less
then the existing incandescent lamps.
JWID
Tom Eckert N2VWN
73 Glacier
Oakland, TN
On Sun, Jan 8, 2012 at 8:08 PM, Work Jerry <glwork@mac.com> wrote:
> An interesting observation about solar panels. They are in production all
> over the world and prices are coming down rapidly----so is quality in some
> cases. Most new technology items go through a cycle that they are not used
> at all until they are within 10x the price/performance of the competing
> technology they are trying to replace. Once under than "magic" threshold
> then many players get into the game and try to chase down the
> price/performance curve faster than the next guy. That is where we are
> with solar panels right now. The last thing you want to do is buy based on
> price per watt. There are just too many ways to game the price per watt
> number. You have to consider all the relevant performance specs and even
> then you need to be really knowledgeable to keep from being flim-flamed by
> the marketing hype. Watch Quartzite this year. My guess is you will see a
> flood of cheap sounding solar panels and LED lights. Buyer beware. Best
> bet is to buy from well know name su
> ppliers who have been around a long time, who are likely to be around a
> long time from now and who offer reasonable performance warrantees. Absent
> that, you are the beta tester for a lot of this stuff. I love new tech as
> much as anyone and I have no trouble living on the bleeding edge, but I
> know that is where I am so am comfortable there...........
>
> Jerry
> Jerry Work
> The Dovetail Joint
> Fine furniture designed and hand crafted in the 1907 former Masonic Temple
> building in historic Kerby, OR
> Visitors always welcome!
> glwork@mac.com
> http://jerrywork.com
> 541-592-5360
>
> www.southernoregonguild.org
> www.siskiyouguild.org
> --------------------------
>
> Message: 17
> Date: Sun, 8 Jan 2012 13:59:41 -0600
> From: Tom Eckert <gmcrv1@gmail.com>
> Subject: Re: [GMCnet] Ebay (2) 100w foldable panels
> To: gmclist@temp.gmcnet.org
> Message-ID:
> <CAGSVdWV_5Ristd-AN_4W3WNncQRxQzep_jwJ4uLb3WbmR1o5QQ@mail.gmail.com
> >
> Content-Type: text/plain; charset=ISO-8859-1
>
> Has anyone seen these?
>
> http://www.sunelec.com/?gclid=CJSWsMmawa0CFQmd7QodPzQRAw
>
> > From $.74 per watt.
>
> Comments...
>
> Thanks,
>
> Tom Eckert N2VWN
> 73 Glacier
> Oakland, TN
> ------------------------------------
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] Ebay (2) 100w foldable panels [message #156046 is a reply to message #156011] |
Mon, 09 January 2012 09:22 |
RadioActiveGMC
Messages: 1020
Registered: November 2010
Location: Hot AZ desert
Karma: 0
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Senior Member |
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Many products are made by one company and re-marketed by another. Since I'm not concerned at all about brand name, and the quality of the panels exceeds what I hoped for I did get what I paid for! Being in the electronics business I know of at least (5) brands made by the same factory in Malaysia , same production run, same performance, maybe one feature switched from one to the other however to fool the consumer. Out of the five brand names, only one is known by most, the other four are fairly unknown.
***"Gettin There"-1973 23' Sequoia-
Michael, Onans smell, "Go solar/wind power!"
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| Re: [GMCnet] Ebay (2) 100w foldable panels [message #156063 is a reply to message #156022] |
Mon, 09 January 2012 11:47 |
Greg and April
Messages: 263
Registered: December 2011
Karma: 0
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Senior Member |
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Tom, what is your source for LED's?
.
Greg H.
I don't just march to the beat of my own drum - I have an entire brass band
to keep me company.
.
----- Original Message -----
From: "Tom Eckert" <gmcrv1@gmail.com>
To: <gmclist@temp.gmcnet.org>
Sent: Sunday, January 08, 2012 21:34
Subject: Re: [GMCnet] Ebay (2) 100w foldable panels
> Jerry,
>
> I am fortunate enough to have come across some DOD (Department of Defense)
> surplus solar panels. Probably too small for serious power, but I use
> them
> to charge an RV/Marine battery and power several LEDs that light a small
> shop extremely well. The LEDs I use are only available in large
> quantities
> - but are very, very bright and are marketed only commercially by Osram
> Lamp, GE Commercial, Sylvania Commercial, and a few others. Jobber cost
> is
> around $30 per running foot. Three 8" sections provide a whiter brighter
> light then two 8' flourescent shop lamps. All come with at least a 10
> year
> warranty. A couple have lifetime warranty.
>
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| Re: [GMCnet] Ebay (2) 100w foldable panels [message #156066 is a reply to message #156063] |
Mon, 09 January 2012 12:01 |
gmcrv1
Messages: 839
Registered: August 2007
Location: Memphis
Karma: -1
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Senior Member |
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Greg,
Where do you live? I may be able to find a local distributor for you. The
company I work with does commercial and specialty electric sign work. I
know they have a minimum order of around $3,000 direct from the
manufacturer/supplier. You may be able to purchase small quantities by
dealing local.
Tom
Tom
On Mon, Jan 9, 2012 at 11:47 AM, Greg and April
<gregandapril@earthlink.net>wrote:
> Tom, what is your source for LED's?
>
> .
>
> Greg H.
>
> I don't just march to the beat of my own drum - I have an entire brass band
> to keep me company.
>
> .
> ----- Original Message -----
> From: "Tom Eckert" <gmcrv1@gmail.com>
> To: <gmclist@temp.gmcnet.org>
> Sent: Sunday, January 08, 2012 21:34
> Subject: Re: [GMCnet] Ebay (2) 100w foldable panels
>
>
> > Jerry,
> >
> > I am fortunate enough to have come across some DOD (Department of
> Defense)
> > surplus solar panels. Probably too small for serious power, but I use
> > them
> > to charge an RV/Marine battery and power several LEDs that light a small
> > shop extremely well. The LEDs I use are only available in large
> > quantities
> > - but are very, very bright and are marketed only commercially by Osram
> > Lamp, GE Commercial, Sylvania Commercial, and a few others. Jobber cost
> > is
> > around $30 per running foot. Three 8" sections provide a whiter brighter
> > light then two 8' flourescent shop lamps. All come with at least a 10
> > year
> > warranty. A couple have lifetime warranty.
> >
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] Ebay (2) 100w foldable panels [message #156120 is a reply to message #156011] |
Mon, 09 January 2012 18:07 |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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Senior Member |
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If you want to experiment with LEDs, you can buy super bright LEDs from DigiKey.
They have the Cree MX6AWT-A1-R250-0009E8, warm white, LED in stock at $2.73/each. Or $2.52 for 50.
I bought these for my coach using 3 in series with an 18 ohm 3 watt resistor, they are plenty bright. They drop 3.3V each. So 3 in series drops 9.9 volts. The 18 ohm keeps the current under 250 milliamps. You have to solder them to a circuit board.
The light output is a very bright yellow-white, 2700K.
They are not a harsh blue/white color like the inexpensive flashlights at Harbor Tool.
http://search.digikey.com/us/en/products/MX6AWT-A1-R250-0009E8/MX6AWT-A1-R250-0009E8CT-ND/2166016
Digikey is located in Thief River Falls, MN.
Regards,
Bill
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
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