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04-30-2014, 01:27 AM
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#1
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4 Rivet Member
2004 16' International CCD
Chicagoland
, Illinois
Join Date: Apr 2014
Posts: 265
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17# Composite Propane Cylinders
I just discovered that my AS has two-10# propane cylinders instead of the two-20# ones that it originally came equipped with.
I was flushed with excitement because this was the opportunity that I had been waiting for to upgrade to aluminum cylinders. Unfortunately, the inside height of the aluminum bottle shield will accept 20# steel cylinders, but is too short to handle 20# aluminum cylinders. It seems that AS needed to rivet the top part of the cover a couple of inches higher to allow the aluminum cylinders to fit.
So I decided to throw out the playbook and go for two 17# composite cylinders from Viking Cylinders. These babies only weigh 10 lbs. each vs. about 18 lbs. each for steel. For you with the big AS trailers this might not seem like a big deal, but for us 16-footers it will add some much needed cargo capacity, or help to offset the weight of a larger battery.
Can I cost-justify the decision? Nope. Is it the most economical solution? Nope. Will I be able to see the liquid levels in my tanks? Yep!
I'm interested in your feedback, comments and criticisms regarding my decision.
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04-30-2014, 03:23 AM
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#2
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Rivet Master
2014 27' FB Eddie Bauer
Chelsea
, Michigan
Join Date: May 2010
Posts: 1,792
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Composite vs aluminum cylinders
I am intrigued by your use of the composite LP cylinders due to the weight savings and most importantly the ability to monitor the amount of LP left in the tanks. Please let us know how this works out. As far as the inability of the aluminum tanks to fit under the AS provided shroud is concerned, isn't the main point of the aluminum tanks aesthetic? In which case I would think that one would not want to cover them!
Bob
__________________
Bob Martel
WBCCI# 5766
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04-30-2014, 05:10 AM
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#3
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3 Rivet Member
1973 25' Tradewind
1962 22' Safari
Augusta
, Georgia
Join Date: Aug 2011
Posts: 169
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I would throughly research the topic. Last May the New Jersey and US DOT issued a recall notice for composite tanks manufactured by "Lite Cylinder." I to was looking to purchase tanks. As a mechanical engineer, once I read up on the recall I decided to save my money and keep using 20# steel cylinders until I can afford new aluminum ones.
I don't remember if this effected Viking cylinders or not, so again I recommend doing your own research on this important safety issue.
Google "composite propane cylinders recall" and make your own decision.
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04-30-2014, 05:31 AM
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#4
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Retired.
Currently Looking...
.
, At Large
Join Date: Jun 2003
Posts: 21,276
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If you use aluminum cylinders, you can leave the cover off.
You could conceivably remove the rivets holding the top of the cover in place, and re-rivet the cover higher to accommodate the taller aluminum cylinders, if you still wanted to use the cover.
__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
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04-30-2014, 05:52 AM
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#5
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Rivet Master
Vintage Kin Owner
1977 31' Excella 500
Berkeley Springs
, West Virginia
Join Date: Sep 2005
Posts: 1,638
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I think the composite cylinders are really cool. I'd also recommend doing your homework to make sure you got one that wasn't unsafe. It is neat to be able to look at them and see the gas level!
I have a pair of 40lb aluminum Worthington's on the 34. Haven't run out of gas yet
__________________
- Jim
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04-30-2014, 05:57 AM
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#6
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Rivet Master
1995 30' Excella
Bowie
, Maryland
Join Date: Apr 2005
Posts: 2,345
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It looks like it was just that one brand that was recalled, and Viking's cylinders weren't affected. They are very cool looking. My only concern would be that some filling stations would be under the same misconception and refuse to fill them, but that might be addressed by carrying around the recall notice (linked on that FAQ page).
__________________
1995 Airstream Classic 30' Excella 1000
2014 Ram 2500 Crew Cab with Cummins 6.7L Diesel
Sold but not forgotten: 1991 Airstream B190
Sold: 2006 F-250 6.0L Powerstroke Supercab
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04-30-2014, 06:03 AM
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#7
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Overland Adventurer
1991 34' Excella
2009 34' Panamerica
Telluride
, Colorado
Join Date: May 2012
Posts: 2,476
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I agree, pretty cool looking. I have concerns about long term exposure to UV light and ozone degredation.
I also agree... aluminum cylinders look great polished and naked on the A-frame. I'd rather have function over fashion.
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04-30-2014, 10:56 AM
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#8
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Rivet Master
1981 31' Excella II
New Market
, Alabama
Join Date: Sep 2011
Posts: 6,145
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I worry about the long term safety of composite cylinders and the potential for them to get bruised from impacts.
Perry
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04-30-2014, 11:13 AM
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#9
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Rivet Master
2012 25' FB Eddie Bauer
Vintage Kin Owner
Virginia Beach
, Virginia
Join Date: Sep 2004
Posts: 7,801
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Caution & Question
There was at least one OLD thread about these tanks. They were NOT approved for use on vehicles. Great for backyard grills, etc., but not yet approved for RV use.
Now this could be out of date. If so, I'll try to find out when this type of cylinder was approved.
I do remember from the original thread that they'd been very thoroughly tested for puncture and flamability and had passed with flying colors.... Why they weren't good for an RV I don't know other than that the approval process either hadn't been started or was still underway.
On to do research. Paula
__________________
Today is a gift, that's why they call it the present.
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04-30-2014, 11:50 AM
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#10
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Rivet Master
2012 25' FB Eddie Bauer
Vintage Kin Owner
Virginia Beach
, Virginia
Join Date: Sep 2004
Posts: 7,801
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http://www.airforums.com/forums/f287...nks-27788.html
OK here is the old thread. See post 29. Talk about "government speak".
Has the DOT approved these or not?
Paula
__________________
Today is a gift, that's why they call it the present.
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04-30-2014, 12:13 PM
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#11
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Wise Elder
2010 30' Classic
Vintage Kin Owner
South of the river
, Minnesota
Join Date: Dec 2009
Posts: 4,169
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They are DOT approved.
The main thing to watch is that they are limited to a 15 year service life, after which they can no longer be filled.
__________________
To learn to see below the surface, you must adjust your altitude
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04-30-2014, 04:24 PM
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#12
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4 Rivet Member
2004 16' International CCD
Chicagoland
, Illinois
Join Date: Apr 2014
Posts: 265
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Thank you all for the feedback. I'll post some pictures once I get the cylinders, and have them filled. As of now I intend to leave these under the nice cover that AS provided, but I might pull the cover when I feel the need for a little bit of bling-bling. With the cover on I can help to minimize the effects of UV and bruising/scrapes/bumps.
I'm not affiliated with these guys, but if you're interested here is where I found the best price:
Viking Cylinders LPG Propane Gas Cylinder - 17 lbs
My price was $272.78 shipped to my door for two of the 17 lb. cylinders making them much more expensive than steel, and a bit less than aluminum.
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05-19-2014, 01:00 PM
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#13
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4 Rivet Member
2004 16' International CCD
Chicagoland
, Illinois
Join Date: Apr 2014
Posts: 265
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Conclusion:
This plan was a major fail. The designers of these cylinders failed to include standardized features found on other tanks. The bottom of the composite cylinders was much too large, and would not fit into the oval-shaped pan/tray that AS mounts to the trailer frame. Furthermore the top of the cylinders is not designed to be used with the top-mounted factory hold-down assembly. My take-away is that the weight savings realized by the lighter cylinders would be nearly offset by the larger pan and mounting hardware that are needed to accommodate them.
Aesthetically the cylinders look cool from a distance, but really look like cheap plastic up close. I'm guessing that many AS owners would not like the look.
I apologize for not taking any pics to share. In my defense I was so disappointed that I boxed up and returned the tanks before I remembered to take any.
On a happier note, I have some nice aluminum cylinders in my future.
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05-19-2014, 01:52 PM
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#14
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Overland Adventurer
1991 34' Excella
2009 34' Panamerica
Telluride
, Colorado
Join Date: May 2012
Posts: 2,476
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Yup, the Worthington cylinders are really nice. You'll never regret spending the money! They look great..... the best part is they can remain useful virtually forever.
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05-19-2014, 08:46 PM
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#15
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Wise Elder
2010 30' Classic
Vintage Kin Owner
South of the river
, Minnesota
Join Date: Dec 2009
Posts: 4,169
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Interesting, thanks for the post.
As a community of travelers we learn just as much from things that don't work out as things that do, as long as people share them.
__________________
To learn to see below the surface, you must adjust your altitude
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11-23-2020, 11:40 PM
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#16
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1 Rivet Member
2002 27' Safari
Mill Valley
, California
Join Date: Aug 2020
Posts: 6
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Thanks for this post ... was thinking about adding composite, but I thought it was a drop in replacement also. They do offer RV trays on their website. Not sure if this would work with the AS LP tank cover https://vikingcylinders.com/shop/lif...rv-mount-tray/
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