burst disk cartridge idea
- jackssmirkingrevenge
- Five Star General
- Posts: 26179
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 543 times
- Been thanked: 319 times
Anyone with machine-shop access care to make me one?
where's the puppy-dog eyes smiley when you need it
After the testing of my 6mm burst disk prototype exceeded my power expectations, it's clear that the potential for this idea is valid. I'm going to look into the possibility of having the body of this cartridge design machined for me, if it isn't too prohibitive then expect further tests
where's the puppy-dog eyes smiley when you need it
After the testing of my 6mm burst disk prototype exceeded my power expectations, it's clear that the potential for this idea is valid. I'm going to look into the possibility of having the body of this cartridge design machined for me, if it isn't too prohibitive then expect further tests
hectmarr wrote:You have to make many weapons, because this field is long and short life
- MrCrowley
- Moderator
- Posts: 10078
- Joined: Fri Jun 23, 2006 10:42 pm
- Location: Auckland, New Zealand
- Been thanked: 3 times
I think I thought of a similar idea but for a airsoft grenade, correct me if i'm wrong but its based on a similar principle, is it not?
This is quite old and pimpmann pointed out some flaws with it and I never got round to testing it.
This is quite old and pimpmann pointed out some flaws with it and I never got round to testing it.
- jackssmirkingrevenge
- Five Star General
- Posts: 26179
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 543 times
- Been thanked: 319 times
It's a similar concept in that a spring-loaded sharpened tube is used to rupture the burst disk, what sort of flaws did pimpman predict?
hectmarr wrote:You have to make many weapons, because this field is long and short life
- jackssmirkingrevenge
- Five Star General
- Posts: 26179
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 543 times
- Been thanked: 319 times
I see no reason why my design wouldn't work - the question is, how much force will the bolt have to place when hitting the cartridge to rupture the disk? If this figure is too excessive, then the cart won't have enough energy to recock the bolt and you'd have to cycle the action manually.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Not a bad Idea Jack, If i have the time i may try and scab some time in my Industrial Tech Class to machine some metal so i may be able to make one over a long period, but right now I'm scabbing time in Tech to make my Piston Valve, so yeah.
Happy Spuddin'
Happy Spuddin'
Poo.
- mega_swordman
- Corporal
- Posts: 526
- Joined: Wed Nov 29, 2006 2:37 pm
- Location: Bay Area, California
- Contact:
Jack, i am afraid I cannot quite understand your concept.
However, I do have an Idea of my own, If the volume of the container you have is reduced, the pressure will rise yes? So therefore, if you made a device that compressed the volume of your chamber, then the pressure would rise and rupture the bust disk. I will try getting a diagram up in a bit to better represent my idea.
However, I do have an Idea of my own, If the volume of the container you have is reduced, the pressure will rise yes? So therefore, if you made a device that compressed the volume of your chamber, then the pressure would rise and rupture the bust disk. I will try getting a diagram up in a bit to better represent my idea.
"Never tell people how to do things. Tell them what to do and they will surprise you with their ingenuity." George S. Patton
- MrCrowley
- Moderator
- Posts: 10078
- Joined: Fri Jun 23, 2006 10:42 pm
- Location: Auckland, New Zealand
- Been thanked: 3 times
I doubt much at all, if the barrel is metal and sharpened enoughjackssmirkingrevenge wrote:I see no reason why my design wouldn't work - the question is, how much force will the bolt have to place when hitting the cartridge to rupture the disk? If this figure is too excessive, then the cart won't have enough energy to recock the bolt and you'd have to cycle the action manually.
- jackssmirkingrevenge
- Five Star General
- Posts: 26179
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 543 times
- Been thanked: 319 times
I have a friend in the UK who has machined silencer adapters for me in the past for a reasonable fee, I'll draw up exact plans and see what he quotes me for.If i have the time i may try and scab some time in my Industrial Tech Class to machine some metal so i may be able to make one over a long period, but right now I'm scabbing time in Tech to make my Piston Valve, so yeah.
It's fairly straightforwards, spring loaded bolt smacks the base of the cartridge, which forces the disc against the sharpened end of the barrel, thus bursting it. Aire pressure is released, pushing the projectile out of the barrel and the cartridge back out of the breech.Jack, I am afraid I cannot quite understand your concept.
The cartridge is already going to be at several hundred psi, the extra energy required to compress it further in one go would make a launcher for such a device impractical.If the volume of the container you have is reduced, the pressure will rise yes? So therefore, if you made a device that compressed the volume of your chamber, then the pressure would rise and rupture the bust disk.
hectmarr wrote:You have to make many weapons, because this field is long and short life
- mega_swordman
- Corporal
- Posts: 526
- Joined: Wed Nov 29, 2006 2:37 pm
- Location: Bay Area, California
- Contact:
Thanks Jack, I get it now. Would my idea work under lower pressures? I can understand at a couple hundred it not working, but what about in the high double digits?
"Never tell people how to do things. Tell them what to do and they will surprise you with their ingenuity." George S. Patton
- jackssmirkingrevenge
- Five Star General
- Posts: 26179
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 543 times
- Been thanked: 319 times
It depends on how you intend to go about increasing the pressure, a diagram of how you would intend to do it would be helpful but I don't see a way of achieving this without using a disproportionate amount of force - unless of course you're straining the disk to within a few psi of bursting, which isn't a practical or safe proposition.mega_swordman wrote:Would my idea work under lower pressures? I can understand at a couple hundred it not working, but what about in the high double digits?
hectmarr wrote:You have to make many weapons, because this field is long and short life
- jackssmirkingrevenge
- Five Star General
- Posts: 26179
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 543 times
- Been thanked: 319 times
The disk will be bulged forward anyway, but a bit of paper wadding should be enough to keep it in place.
hectmarr wrote:You have to make many weapons, because this field is long and short life