Damaged Air Tank

[deadeye ive]

The only ocurance of this happening that i know of is when a theoben rapid was filled with a gas other than air. I know someone who has seen the pics of what happend but they are not available on the web.

I'd not heard of this Rob,no doubt the operator tried filling it with neat oxygen or some other highly flammible gas and with the seals probably being oil based !!!!!!!!!!!although i have heard of people using helium.There is is probably a real idiot out there with suicidal tendencies thinking about using Hydrogen to see if he can get some more FT LBS :blink: How can you make allowances for these types

Not the sort of publicity Theoben want though irrelevant of how it's been caused .

 

 

 

Cheers Ive

[Evilv]

I was once standing a metre away from a 12 bore pump action which exploded and blew the barrel into twisted strands of steel. It split in several lines about 18 inches from the action rather like a bannana does when bent. Two of the strands seperated from the front of the barrel and bent right back to touch the barrel behind the burst.

 

It happened because the guy was firing solid slugs rapidly one after another like in a gangster film. He'd loaded the cartridges himself and forgotten to put powder in one of them and when the primer blew the solid slug two thirds of the way down the barrel, the following one came up behind it at 1090 fps and jammed.

 

The shooter (Chairman of the club, who had already lost three fingers in previous gun accidents over the years) just looked surprised, and then said, calm as you like, "Now that's what you call a ventilated barrel".

 

I just sloped off to change my trousers and re-evaluate my membership of that particular club, which following a few other serious accidents had become known in the locality among shooters as 'The Bad Reputation Gun Club. One guy shot himself twice in a year, firstly, blowing a terrible ragged hole through his right hand while loading a .7 caliber (yeah three quarters of an inch) flintlock pistol. Shot the ball, wadding and ramrod right through his palm and staggered about the range before collapsing. Later in the year while tidying the range, he shot himslef up the ar*se after throwing a live rifle round in a bonfire with the rubbish. Another guy used his legally held .44 magnum to sort out his wife's lover, and two printers among our number were convicted of a large dollar forging escapade.

 

I also saw a .44 black powder revolver blow up when several chambers fired at once. The barrel was found about twelve feet down the range. That was a hazard of those cap and ball revolvers that some of us shot there. They had a large flash at the chamber mouth and if you had loaded badly made or undersized lead balls in them, the flash could light other chambers that weren't in line with the barrel. You could stop it by smearing grease on the mouths of the chambers after loading. They were fun, but very filthy things. This is like the one I had:

 

 

http://www.buffalobillsshootingstore.com/muzzleloaders.html

 

Obviously these things happened back in the eighties when you could own loads of fun toys as long as you hadn't been to jail. Happy days.

 

Really, snakebite, I wouldn't worry about your AA410, just take care where it's pointing when you pull the trigger mate. LOL.

Edited September 9, 2005 by Evilv

[SNAKEBITE]

Really, snakebite, I wouldn't worry about your AA410, just take care where it's pointing when you pull the trigger mate. LOL.

Too late for that after those horror stories I've decided to take up knitting. :blink:

[Evilv]

One day, I'll tell you about my .58 caliber balck powder rifle and the .45/70 trapdoor Springfield carbine that when fired with factory loaded nitro ammunition made my nose bleed with the recoil and left me with a head ache for the rest of the day. Much softer with black powder crtridges though.

 

.58 Calibe Enfield Rifled Musket.

 

http://www.nps.gov/pete/mahan/rifledmusket.html

 

.45/70 Trapdoor Springfield Rifle.

 

http://arms2armor.com/Firearms/us4570.htm

 

 

I love the smell of black powder in the morning air....

Edited September 9, 2005 by Evilv

[deadeye ive]

Evilv

 

I'm under the impression that some of them folks you mention there have joined my club :o ............Blackpowder and homeloaders eh! they must be the same breed :blink:

 

Back on track

 

I think most peoples concerns were should moisture corrode the interior of an air gun resevoir and i have to say highly unlikely due to Clever folks that design them

 

 

 

Cheers Ive

[Evilv]

Black powder is a whole LOT of fun Ive. I still have me old powder flask on the fireplace, and a bullet mould for .45 caliber balls, but that's all I have left from my once proud armoury of 'smoke makin' thunder sticks.

 

Evilv sits back by the old log fire, lights his pipe, binks a watery eye, and sinks into nostalgia for his old Gold Rush days....

 

'We wuz headin up to Dawson, back in '93,' he says to the old dog at his feet. 'My buddy, Smokin Joe Jenkins, got into a bit of a scrape with some tough guys in the Painted Harlot Saloon. Shot five of

'em, he did, before his Colt Dragoon misfired and he caught a ball in the chest. Died in agony....'

 

 

:blink:

[SNAKEBITE]

I still have me old powder flask on the fireplace,

 

 

Is that wise?

You don't have a few "sweaty" sticks of dynamite in the cuboard uner the stairs as well do you? :blink:

[SNAKEBITE]

I think most peoples concerns were should moisture corrode the interior of an air gun resevoir and i have to say highly unlikely due to Clever folks that design them :blink:

That what I wanted to be sure of.

Mind put at ease now

[Evilv]

I still have me old powder flask on the fireplace,

 

 

Is that wise?

You don't have a few "sweaty" sticks of dynamite in the cuboard uner the stairs as well do you? :blink:

What? You mean maybe you think I should have emptied it and washed it out with soapy water? Hell no, it's got 500 grammes of FFFG inside it and I sprinkle it on the fire to liven up the coals. As for keeping my sweaty dynamite under the stairs, no I've got a crate of that in the hearth where I can keep an eye on it.

 

 

 

On the other matter, Since the compression of ordinary air in a damp climate is CERTAIN to to put water inside the reservoir, I'd have thought if there were going to be horrid results on the valves or tank, we'd have all seen furious threads on it warning of the dire results. Still, I might think of getting one of those dry pack thingies for my Hills pump.

Edited September 9, 2005 by Evilv

[deadeye ive]

Black powder is a whole LOT of fun Ive. I still have me old powder flask on the fireplace, and a bullet mould for .45 caliber balls, but that's all I have left from my once proud armoury of 'smoke makin' thunder sticks.

 

Evilv sits back by the old log fire, lights his pipe, binks a watery eye, and sinks into nostalgia for his old Gold Rush days....

 

'We wuz headin up to Dawson, back in '93,' he says to the old dog at his feet. 'My buddy, Smokin Joe Jenkins, got into a bit of a scrape with some tough guys in the Painted Harlot Saloon. Shot five of

'em, he did, before his Colt Dragoon misfired and he caught a ball in the chest. Died in agony....'

 

 

Evilv

By the looks of this yer must be putting some of that black powder stuff in yer pipe mate .

Probably a Red Indian to share it with you :blink:

 

 

Cheers Ive

[SNAKEBITE]

Probably a Red Indian to share it with you :blink:

That's not very P.C.!

Aren't they now called Native Americans?

[Evilv]

Probably a Red Indian to share it with you  :blink:   

That's not very P.C.!

Aren't they now called Native Americans?

No, not on the prairie they aint, pardner. Dirty, lowdown injun scum, we call 'em in redneck country. The only good injun is a dead injun, here boy. Yeeeha.

 

And what's this PC - some new fangled whiskey?

 

Edited September 10, 2005 by Evilv

[old rooster]

At the risk of returning to the original topic I've worked on the internals of a few PCP's that have been charged using a pump only and have yet to find any damage caused by corrosion. As for safe pressure levels one has to consider that us poor old designers have to use a "factor of safety" where hazards are likely, in structures such as bridges a higher factor can be used than with something like an aircraft where weight is a primary concern.

 

I would expect that the factor on such items as the reservoir of a pcp would be fairly high, while weight is still a consideration it doesn't have to fly and manufacturers are well aware of their liabilities should their products fail catastrophically.

 

I use a hand pump on my pcp’s and although it is a bit of a workout have no doubt that it is a perfectly acceptable way of charging the gun. One thing to consider is the heat caused by pumping too briskly and its possible effects on the seals of the pump itself.

[deadeye ive]

As for safe pressure levels one has to consider that us poor old designers have to use a "factor of safety"

Just made some portable steps for the maintenance lads at work ,,,,,,,,,,,the risk assessment and CE questionaire was 5 A4 pages long :( Which i had to fill in before they could be used witnessed by the company saftey rep

 

 

God only knows on the safety requirements involved when manufacturing a portable gas cylinder with 3000psi operating pressure

 

 

 

Cheers Ive

[SNAKEBITE]

God only knows on the safety requirements involved when manufacturing a portable gas cylinder with 3000psi operating pressure :(

But it makes you feel safe at least!

[deadeye ive]

God only knows on the safety requirements involved when manufacturing a portable gas cylinder with 3000psi operating pressure   :( 

But it makes you feel safe at least!

If a cylinder should explode in the operators hands when being used correctley then the PCP Gun industry would be DECIMATED overnight .

I think the Designers and Materials SPECIALIST Know this .......Whoever is the brand name on the gun

 

 

 

 

Cheers Ive

[mimic]

Definately a job I'd be more than happy to pay someone-else to do given the risks of large explosions.

 

Have a peek here for that big bang feeling

Suddenly i dont like my cylinder being near me B)

Edited September 30, 2005 by mimic

[mimic]

Another note if striping a PCP resy on a rifle After double confirming the cylinder is emty before un scewing anything, the equaly important thing to remember is when re assembling the tank it is EXTREAMLY important that you make apsolutly certain there is no OIL or contaminats on the inside of that tank, A degreasing agent of NON combustable solution should be used, When You have it all back together and are ready to refill it for the first time you should wear protective clothing and fill the gun in a Robust concreat or solid structure from outside

 

Meaning place the gun inside a Blast container and fill remotly Leave the gun for a full 24 hours if it has not detonated I would deam it safe to use at this point.

 

I had to do this when i had my Falcon striped and and completly re blued I can tell you filling that tank for the first time was a Scarey business