Another post about an LPG bottle...

[FFR]

Hi,

I have seen something like this in other forums... but it was a dodgy hose fitting to the gas tap, or it was done for a jap car.

The idea (nothing new) is reusing an old LPG bottle as an air tank for the onboard compressor. I think that I will hold the bottle to an aluminium plate using U-bolts, and then I will attach this plate to the landy. The top protective collar in the bottle will be gone soon.

Rather than using a straight hose connection, the use of a "T" coupling with a release valve or a tiny tap will allow for water evacuation of the tank.

Standard disclaimer applies here: :nazilock:
There is certain risk in pressurizing and old gas container. Just removing the gas tap might have some risk because there is some gas (at atmospheric pressure) inside. I read about what happens to a compressed gas in a confined space when the container develops a hole, and I even made a couple of tests with coca-cola bottles at 8 bar. So, having said that, everyone must evaluate their particular risk and act accordingly.

In my application (telescopic pneumatic mast) the compressor puts a ridiculous 2,5 bar pressure, so I might be using coca-cola bottles instead... but there are some cheap DC compressors out there without pressure relief valve, so beware.

See attached photos. Air fittings have no teflon, they are screwed together for illustration purposes only:

http://imageshack.us/a/img189/6495/img2446ce.jpg (http://imageshack.us/photo/my-images/189/img2446ce.jpg/)

http://imageshack.us/a/img233/3162/img2448o.jpg (http://imageshack.us/photo/my-images/233/img2448o.jpg/)

http://imageshack.us/a/img191/8913/img2449rz.jpg (http://imageshack.us/photo/my-images/191/img2449rz.jpg/)

http://imageshack.us/a/img23/9593/img2445ju.jpg (http://imageshack.us/photo/my-images/23/img2445ju.jpg/)

[p38arover]

I think I'd rather use an EAS air tank out of a late RRC or P38A. They're cheap enough.

[Chops]

What about a second hand tank from a truck wreckers?

Although I do like the idea of a gas cyl,, I have one in the shed even ;)

[mike_ie]

Truck air tank from the wreckers is the way to go - you should even be able to get it with all the bracketry attached to mount it to the chassis. I've seen a setup recently that used a fire extinguisher bottle that worked very well, and was a perfect fit for the chassis outrigger. Gas tank would work, it just seems like a very odd shape for mounting, that's all...

[FFR]

Well..
Truck air tank from the wreckers is the way to go - you should even be able to get it with all the bracketry attached to mount it to the chassis. I've seen a setup recently that used a fire extinguisher bottle that worked very well, and was a perfect fit for the chassis outrigger. Gas tank would work, it just seems like a very odd shape for mounting, that's all...

That one had the right price... and it is a tight fit in the rear left quarter...

Cheers,

Carlos

[jimr1]

hi on an interesting post .If i can add to this, if you have never taken a valve out of a gas bottle. Make sure the bottle is empty... The brass valve is a taperd thread , it has a sealer on it like locktite. They are very very tight to undo, Once out , the best way to make surethere is no residual gas in the bottle is fill it with water... NEVER use an angle grinder,or welder, on a gas bottle until flushed out.. I would recomend doing any work outside. An empty gas bottle is dangerouse if not flushed out. The best option as already said, is go for a truck tank .ragards jimr1