Member - Ed. C. replied:

G'day time waster,
The gas cyls are rated pressure vessels, tested to 3.3 MPa (approx. 450 psi), so I can see no reason why they can't be used as air reservoirs (holding what, around 100 psi ??)...
In fact, I have done just that, mounted on the A-frame of my C/T, & used mainly for re-inflating tyres...
You'll need to make provision for a water drain outlet, which will mean drilling a hole & welding (or brazing) a suitable fitting, which in turn will mean that the test rating will be null & void (unless you have it re-tested)...
Just make sure there is no rust inside, & if you're gunna be applying any heat, then make sure there ain't no residual gases in there!!!
When I "modified" mine, it had been empty for like, many years, so there was no drama...

Regards, Ed. C.

Rick Blaine replied:

I used one as a reservoir for air for many years.... I suggest that you rinse the interior with some turps or thinners then put some cold gal paint inside and swill it around to "Paint" the inside and it will resist internal corrosion well

gforse replied:

what a great idea thanks for the idea we have a dual cab lux as well am going to do same thank you very much even the missus said excellent garry karen

Member - Mark W (VIC) replied:

time waster
I was looking to do this, was in town at George Taylor Store ( Vic ) and they had ex Army air tanks with inlet outlet and drain all ready to go for $20.00 about 4 inch by 2 foot long fits behind bull bar or underneath easily. Worth a look ??
Mark

Nick R replied:

A problem with welding them could possibly (I might be wrong) be a risk of explosion. not sure about cylinders but I know with fuel tanks, they need to be de-gassed for a time first to ensure no fuel remains.
Our local mechanic has a heap of old cylinders, yours might too, which held inert gasses which would be safe for welding.
I'm interested in doing the same, let me know how you go.
NickR

Member - Mark W (VIC) replied:

time waster
the web address for GTS is www.georgetaylorsstores.com.au
Good luck if you need any help get back to me
Mark

GRAEME replied:

If you go to a truck wreckers you can get an air tank of almost any size.
I got one for $15 with fittings at both ends, a drain valve and brackets.
It's about 5 or 6 litres and mounted nicely on the gearbox crossmember.
I use a rattle gun all the time using an a/c compressor.
Graeme

Rod W replied:

Agree with Graeme. Pick-up/use one from a truck wrecker.

Member - Jeff M (WA) replied:

I bought one form Michigan Trucks in america when I ordered my air springs. www.trucksprings.com

Works a treat, was only about $25 new and get's HEAPS of use blowing my very very loud air horns, raising and lowering the back suspension and blowing out air filters while on dusty trips.

Member - DOZER replied:

Gday
The gas cylinder is a good idea, and the gas bleed valve could be used to relieve water....the 9 kg models also have a relief valve on them should a pressure switch not work effectively...having said that, i use old dry powder fire extinguishers. They are rated to 200psi, and the alloy tops are easy to tap out 1/8 bsp, holes are already there, and some threads aswell.
The nearest scrap place will have one hundred at least/..
Andrew