Propane Tank Sizes - Fiberglass RV


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Old 03-12-2007, 09:01 PM   #1
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If I can squeeze a few more inches forward on my tongue then I can fit a nice tongue box between the bulkhead and the new tank. Don't want to put the tank in the box. Currently have twin 30lbers with 12inch diameters. Only need 10lbs. of propane in Texas. A 8 in. diameter tank would do it.
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Old 03-12-2007, 10:23 PM   #2
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Terry,
I forget what equipment you have that uses propane (furnace? hot water heater? frig?), but I only have a cook-top that needs propane and have been happy with a 5lb. tank. It is 7.5" in diameter.

Tom Trostel
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Old 03-13-2007, 12:57 AM   #3
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Terry,
I forget what equipment you have that uses propane (furnace? hot water heater? frig?), but I only have a cook-top that needs propane and have been happy with a 5lb. tank. It is 7.5" in diameter.

Tom Trostel
Thank you for responding, Tom.
I have no heater (use electric htr.). Have an oven but it never worked (I use an outdoor cooker with a small portable propane heater). I just use the stove top and hot water htr. So maybe a 5 lb. tank would be fine! Had a Cassita and put twin 10# bottles on the tongue and never got to the second bottle after three years. I'll check that out with a 5 pounder. I suppose that the single-tank hold down would be some kind of "j" bolts like they use for car batteries.
Thanks again.
ps Going to the Blue Bonnette rally for fiberglassers next month in Texas.
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Old 03-13-2007, 04:12 AM   #4
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Aren't you referring to DOT 5 and 10 gallon tanks? The 5 gallon tank holds about 17#, allowing for an 80% fill and 4.2# per gallon.
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Old 03-13-2007, 05:55 AM   #5
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Here's a link to a 5 pound propane tank. I got mine at Camping World. I believe that Northern Tool also sells them. Costs almost twice as much as a 20 lb. tank.

http://www.amazon.com/MANCHESTER-TANK-EQUI...?tag=dogpile-20

Yes, we will attend Bluebonnet (and Oregon Rally, and Pine Knot)
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Old 03-13-2007, 07:54 PM   #6
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To answer the question posed in the subject lines, YES, there are TWO shapes of the 10lb propane tank -- One is the same height as the 20lb tank but has a smaller footprint and one has the same footprint as the 20lb tank but is shorter -- I bought my tall, skinny 10lb tank at Home Depot.

If I were doing it over, I would get the other tank because it is a little more stable, having a lower center of gravity, but I'm not trying to save horizontal space.
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Old 03-13-2007, 09:21 PM   #7
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If I were doing it over, I would get the other tank because it is a little more stable, having a lower center of gravity, but I'm not trying to save horizontal space.
Maybe something like this would help...

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especially if it were fastened to a mounting brace of some sort

I've seen this bracket for both sizes of 10lb tanks and the 5 pounder at a propane store here in Portland (Gas Connection), runs about $10
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Old 03-14-2007, 07:05 PM   #8
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I have to assume that Pete's stability concern is during handling off of the trailer, for which that plastic stand would be handy. On the trailer, the tank should be in a solid bracket so it shouldn't matter how tall and skinny it is. Do I have this right?

For examples, see Manchester Tank - Steel Propane Cylinders which shows both 10 lb (actually 10 lb and 11 lb) designs, complete with dimensions.
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Old 03-14-2007, 08:19 PM   #9
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Not exactly, Brian -- On my 91Scamp13, the LP tank sits on some welded cross-pieces inside the frame members in front and there are two steel 'bands' that hook over the upper edge of the tank and are fastened with bolts to the cross-pieces -- A 20lb tank has a wide enuf stance that the bands hold it securely, but the narrow 10lb tank feels a little easier to tip -- OTOH, I'm pretty sure that in a really violent crash, either tank could come loose from the bands, probably by bending the hooks straight, likely with the battery box sailing along right behind it -- One more reason for traveling with the LP turned off.

I could modify the band system by connecting them to each other with a third piece or by substituting a piece of chain.

The LP tank hold-downs on my previous 16' Jayco weren't much more secure.
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Old 03-15-2007, 06:59 PM   #10
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Thanks, Pete, that makes sense. You have hold-downs like a traditional battery - just pulling the tank down onto the mounting platform. My dual 20-lb tanks are held somewhat similarly, but with threaded rod and a bracket; they sort of stabilize each other, and I see how a tall tank would not be very secure.

The much better mounts would be those surrounding straps that some trailers seem to have - especially for the tall-and-skinny tanks.
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Old 03-15-2007, 11:30 PM   #11
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Fibreglass propane tanks are now available in the US, I e-mailed the following company earlier this week, they are not yet certified in Canada, but are the same tanks that have been sold in Europe for years, now manufactured in the US of A. Take a look:

http://shop.sailboatowners.com/detail.htm?...1&group=723
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Old 03-16-2007, 02:06 PM   #12
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That looks like the composite tanks from The Lite Cylinder Company, as discussed in Lighten Up, New Composite Propane Tanks!. It looks like their 10 lb size is the tall-and-skinny proportions, but not as skinny as the Manchester steel cylinder (because of the outer ABS plastic part).

National Energy Equipment is shown as the distributor for Canada, and indeed the Lite cylinders are on page 57 of the NEE catalog - but not the 10-pound size.
Quote:
Originally posted by NEE Catalog
Composite Cylinders manufactured by the Lite Cylinder Company are approved by the United States DOT under exemption DOT-SP 13957 and Transport Canada approval is pending.
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Old 03-16-2007, 09:12 PM   #13
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Aren't you referring to DOT 5 and 10 gallon tanks? The 5 gallon tank holds about 17#, allowing for an 80% fill and 4.2# per gallon.
BobB,
I don't know what I actually have now with my twin tall tanks because there's no label. They've been painted. The tank itself measures 12" dia. by 18" tall. Is the weight designation the propane weight or both the tank + propane weight?
Thanks.
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Old 03-16-2007, 09:16 PM   #14
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To answer the question posed in the subject lines, YES, there are TWO shapes of the 10lb propane tank -- One is the same height as the 20lb tank but has a smaller footprint and one has the same footprint as the 20lb tank but is shorter -- I bought my tall, skinny 10lb tank at Home Depot.

If I were doing it over, I would get the other tank because it is a little more stable, having a lower center of gravity, but I'm not trying to save horizontal space.
Pete,
I have a new tongue box at the rear of the tongue frame and about 10" of space from the front of the box to the tongue jack post. I have to put the propane in the 10" space.
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