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Old 01-24-2008, 12:40 AM   #1
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LP Gas Tanks: Replacing 20# with 30# tanks?

I just bought a new 22' 2007 International after about 6 years without a trailer and my former 32' Excella had 30# tanks. Almost ALL my use is boondocking, often for 6 days at a stretch. In "heating season" the extra gas came in handy.

I am planning to replace the single battery with two AGM's and will have a bracket welded up for them. At the same time I'd like to go to two 30# LP tanks. Has anybody done this on a 22 or 23 ? Is there enough room and will the added weight be a problem on the tongue?

Also, I gather from reading some LP related post that aluminum tanks are the way to go and I am assuming I can order an aluminum replacement tank cover for the larger tanks and get rid of the small plastic one.

Any suggestions would be helpful.
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Old 01-24-2008, 01:08 AM   #2
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Costly project. I just bought 20# tank at Costco for about $22 and I can refill it, or exchange everywhere. Fits under my barbecue as well.
In CA camping 20 lb of propane last me for 2 seasons.
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Old 01-24-2008, 05:47 AM   #3
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Greetings-
We replaced our tanks on our Safari 22 with 30# aluminum tanks. I had spent the weekend polishing them and they look great. Once you swith over to the 30# you will have to for-go the cover. But who would want to cover up those shiny babies! You will have to move the LP tray forward about three inches to accomodate the extra tank hight. As for the extra weight on the tongue it is almost an even swap. A 30# aluminum tank is just slightly heavier than a steel 20# when full. As for placing two AGM's on your tonuge, you will really be adding a lot of excessive weight. You should consider placing them back further towards the axle.
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Old 01-24-2008, 06:17 AM   #4
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The aluminum cylinders are made here in Columbus by Worthington Industries. If you contact them they will give you the nearest retailer.

Aluminum LP Gas Cylinders
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Old 01-24-2008, 09:20 AM   #5
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Just remember, the 30# aluminum tanks are taller than the 30# steel tanks.
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Old 01-24-2008, 09:35 AM   #6
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seein as you are willing to spend the money for 2 new tanks--have you thought about a larger horizontal tank? My forklift has one of these, seems as you could mount it closer to the living area below the window on the tongue helping to reduce tongue weight.Just a thought. My LP guy always has used tanks around, lotsa tanks out there, van conversions, moho tanks etc. good luck don't blow anything up!
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Old 01-24-2008, 09:44 AM   #7
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Quote:
Originally Posted by rickandsandi
...You will have to move the LP tray forward about three inches to accomodate the extra tank hight. ...
What? I don't get this at all (all five Airstreams I've worked on the tanks were already a few inches forward of the shell--do you mean move them even further forward?). What am I missing?

My initial desire to respond was prompted by the thought "does anyone have manual tongue jacks any more?" My Caravel does--moving the tanks forward would prevent turning the crank. How about when you need to emergency crank the electric jacks? Be careful about the jack-tank relationship!

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Old 01-24-2008, 09:44 AM   #8
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THis is going to cost you. At street prices nearly $1000. The tanks about $550 adn the cover is around $500.

I upgraded from 30s to 40s about a year ago.
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Old 01-24-2008, 10:45 AM   #9
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Quote:
Originally Posted by doorgunner
seein as you are willing to spend the money for 2 new tanks--have you thought about a larger horizontal tank? My forklift has one of these, seems as you could mount it closer to the living area below the window on the tongue helping to reduce tongue weight.Just a thought. My LP guy always has used tanks around, lotsa tanks out there, van conversions, moho tanks etc. good luck don't blow anything up!
The forklift tanks are not only 8 gallons what is slightly more than 30 lb, but their plumbing is drawing liquid propane. Unusable in any other application.
I know we are willing to pay high price for the looks of our rigs, but I am more practical guy. I don't use lot of propane for my camping, so 2 bigger tanks are already overkill.
Than even if I wanted extra capacity, for abut $70 I can buy 3 smaller tanks and carry one inside, what takes care about weight distribution issue.
Did I mention that 20 lb tanks can be carried by wife to refill station?
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Old 01-24-2008, 11:00 AM   #10
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I don't like messing with them, so the longer I can go between having to, the better I like it. When full, each 30# aluminum tank wieghts about 5# more than a 20# steel tank.
Now, you can go with 30# steel tanks. They hold just as much LP, and cost a lot less, but the tradeoff is they are heavier, and don't look as cool.
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Old 01-24-2008, 11:00 AM   #11
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Quote:
Originally Posted by Pete Vermont\
Also, I gather from reading some LP related post that aluminum tanks are the way to go.
aesthetically yes, functionally they are the same as steel.
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Old 01-24-2008, 11:17 AM   #12
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I would like to see safety ratings on aluminum tanks? Aluminum cracks easily and doesn't have much of mechanical strength.
Mythbuster had a show trying to blew up propane tanks. No "street available" gun or rifle could pierce a hole in steel tank. Took Army high-power rifle to pierce it, but still didn't blew up.
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Old 01-24-2008, 11:23 AM   #13
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hi pete and welcome back to airstreaming!

the tank cover can be ordered from a/s (via your dealer)...

the worthington alum tanks are top quality and much easier than steel to handle empty.

the threaded 'tiedown' rod will need to be replaced for the taller tanks.

you'll love the 2 agms and this will greatly extend the available juice.

is there a solar package in your future?

the main issue is CARRY CAPACITY on your 22, it's not much.

the unit has a sticker inside that will give a close approximation but you may still wanna weigh it loaded.

extra capacity is good!

cheers
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Old 01-24-2008, 11:58 AM   #14
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Quote:
Originally Posted by Kajtek1
Mythbuster had a show trying to blew up propane tanks. No "street available" gun or rifle could pierce a hole in steel tank. Took Army high-power rifle to pierce it, but still didn't blew up.
Don't beleive everything you see and hear on TV. We shoot holes in steel LP tanks all the time with our .45's. On the show you are discussing they were shooting a copper fukl metal jacket 9mm. A pretty useless round. No, it will not blow up since a large spark is needed.
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