Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 74 users online :: 4 registered, 0 hidden and 70 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

New Pneumatic Impact Bomb Idea

All non-spudgun related discussion goes here such as projects, theories, serious questions, etc. All "off-topic" posts (aka useless posting, determined by moderators) will be removed.
Sponsored 
  • Author
    Message

New Pneumatic Impact Bomb Idea

Unread postAuthor: iknowmy3tables » Sun Aug 26, 2007 9:21 pm

well the thing is pretty much a Pneumatic bomb launched or thrown and detonated on impact for blasting flour, paint, and posibely bbs for senerio games
Image
the idea is simple and cheap on impact the nail will pirce the burst disk causing air from the bottle to blast flour paint or bbs out the holes, the hole can be covered with something light such as toilet paper or saran wrap

I'm still testing it I need some more schraders to do it but I'm trying it while standing on a 3liter bottle and maybe latter I will try using viniger and baking soda before I can finally get more schraders

did that make sense I kinda tired so I might be ranting right now
  • 0


iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Unread postAuthor: spud-tom » Sun Aug 26, 2007 9:26 pm

I don't quite understand it. want throwing it, then you have to make it land on the nail side, if you want to push the nail into the cap, then it will blow in your hand. BTW, cool design, but needs some tinkering. Good luck with testing it.
  • 0


spud-tom
Corporal
Corporal
 
Posts: 73
Joined: Sun Oct 22, 2006 3:18 pm
Reputation: 0

Unread postAuthor: Novacastrian » Sun Aug 26, 2007 9:26 pm

Looks ok to me, but i'm no expert, the only thing i would change is to make it bigger or go for high pressures.
It would be sick if you had lots of them in a paintball game.

Edit: Maybe you could use baking soda and vinegar as a "fuse" that way you could cook it before you threw it.
  • 0


Novacastrian
Major General
Major General
 
Posts: 1604
Joined: Sat Aug 11, 2007 6:59 pm
Reputation: 0

Unread postAuthor: spud-tom » Sun Aug 26, 2007 9:29 pm

yea but would somebody explain to me how would you set it off? Plus wouldn't you have to put a lot of pressure on the nail to go through the cap?
  • 0


spud-tom
Corporal
Corporal
 
Posts: 73
Joined: Sun Oct 22, 2006 3:18 pm
Reputation: 0

Unread postAuthor: spud-tom » Sun Aug 26, 2007 9:34 pm

The only way i see it is shooting it from something
  • 0


spud-tom
Corporal
Corporal
 
Posts: 73
Joined: Sun Oct 22, 2006 3:18 pm
Reputation: 0

Unread postAuthor: iknowmy3tables » Sun Aug 26, 2007 9:35 pm

it screws onto the the tip of a bottle and you throw or launch the bottle during impact the nail pireces the burst disk relaing the presure, I have the prototype in front of me only if I had my camera
  • 0


iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Unread postAuthor: hi » Sun Aug 26, 2007 9:35 pm

its basicly a burst disk. when the nail hits the ground it pops the soda cap and releases the air.

the problem is that the only way it will work is if it lands on that side. if it dosnt it wont go off.

the only think i can think of is make the "trigger" part really really heavy that way it lands on that side when you throw it, but you would really have to arch it for it to work.

its looks cheap to make, so i say try it.
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: spud-tom » Sun Aug 26, 2007 9:38 pm

i agree with hi, but weight to shift over it would have to be a throw of at least 15 feet.
  • 0


spud-tom
Corporal
Corporal
 
Posts: 73
Joined: Sun Oct 22, 2006 3:18 pm
Reputation: 0

Unread postAuthor: iknowmy3tables » Sun Aug 26, 2007 9:48 pm

hi wrote:its basicly a burst disk. when the nail hits the ground it pops the soda cap and releases the air.

the problem is that the only way it will work is if it lands on that side. if it dosnt it wont go off.

the only think i can think of is make the "trigger" part really really heavy that way it lands on that side when you throw it, but you would really have to arch it for it to work.

its looks cheap to make, so i say try it.


yah I know ways to make bottles fly straigt, and the presure for the nail isn't so bad especally when it is closer to the activation presure
  • 0


iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Unread postAuthor: frankrede » Sun Aug 26, 2007 11:13 pm

Heres a idea I just thought of

make it with a union and have a chamber filled with dry ice and water that when thrown the dry ice would hit the water and create enough pressure to blow?
It would work, all you would need is a system that would only allow the 2 to be mixed after being thrown.
Maybe a ball valve?
  • 0

Current project: Afghanistan deployment
User avatar
frankrede
Lieutenant General
Lieutenant General
 
Posts: 3220
Joined: Thu Jul 20, 2006 9:47 pm
Reputation: 0

Unread postAuthor: mtronic » Sun Aug 26, 2007 11:38 pm

What happens when the nail part flies off and hits someone?
Its a good concept but why not make them to be launched out of a specialised canon? Or if you want to be throwing them why not get two end caps, flare one so its pretty tight. Fill it with paint or what ever and have a screw in one end of a cap and soda bottle inline with it in the other cap, put the two halves together and hit then on the ground to puncture it and fire in the hole

You would have to fiddle with it to make sure it doesn't pop in your hands and this way there wont be a nail flying off and the halves could then be reused :idea: Just a thought, let us all know what you end up doing mate.
  • 0

Always out numbered....
never out gunned
User avatar
mtronic
1st Lieutenant
1st Lieutenant
 
Posts: 292
Joined: Sat Jun 23, 2007 6:21 am
Location: everywhere at once
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Aug 26, 2007 11:44 pm

You're going to have to work on your "fuse", if you build it as it is it will burst in the barrel as soon as you fire it.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: iknowmy3tables » Mon Aug 27, 2007 9:18 am

frankrede wrote:Heres a idea I just thought of

make it with a union and have a chamber filled with dry ice and water that when thrown the dry ice would hit the water and create enough pressure to blow?
It would work, all you would need is a system that would only allow the 2 to be mixed after being thrown.
Maybe a ball valve?


good idea frankrede, I used to do those bad vinger and baking soda bombs and they are not a allowed acording to forum rules, but one of the triggering methodeds I learend, probebly shouldn't use dry ice since it melts fast even without water

mtronic wrote:What happens when the nail part flies off and hits someone?
Its a good concept but why not make them to be launched out of a specialised canon? Or if you want to be throwing them why not get two end caps, flare one so its pretty tight. Fill it with paint or what ever and have a screw in one end of a cap and soda bottle inline with it in the other cap, put the two halves together and hit then on the ground to puncture it and fire in the hole

You would have to fiddle with it to make sure it doesn't pop in your hands and this way there wont be a nail flying off and the halves could then be reused :idea: Just a thought, let us all know what you end up doing mate.

well the diameter of the nail is really small and the force of the impact is still holding it down... how do I explain the who diameter thing well the presure is apllied on a very small area so there is little force, its like trying to launch a juice pouch by blowing on the straw its really hard because the area of the straw is so small

anyways if you don't understand or don't agree I also have a dot of hot glue on the nail

@jack: good point I will work on that
  • 0


iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Mon Aug 27, 2007 9:24 am

good point I will work on that


All you have to do is turn it upside down (ie load it with the cap end facing the breech) and make sure the nail has a stop to prevent it from falling out on firing.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: jimmy101 » Mon Aug 27, 2007 2:42 pm

You really shouldn't have to fiddle with this design much to make it aerodynamically stable.

The payload presumably has some mass. Probably more mass than the soda bottle. The bottle will act as a fin, the payload is fairly small, massive and in the nose.

Shouldn't be any problem getting it to fly payload first.

If the payload is small enough it is pretty easy to tell if it'll be stable in flight.

Find the front to back center of the loaded projectile.

Balance the projectile on a sharp edge and find the front to back center of mass.

If the center of mass is at least 1 bottle diameter in front of the front to back center of the bottle you have a good chance it'll be stable. The more you shift the center of mass towards the front the more stable it'll be.

If the mass is insufficient, or the bottle too short, just add streamers.
  • 0

Image

jimmy101
Lieutenant General
Lieutenant General
 
Posts: 3127
Joined: Wed Mar 28, 2007 9:48 am
Location: Greenwood, Indiana
Country: United States (us)
Reputation: 7

Next

Return to Non-Spudgun Related Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], Yahoo [Bot]

Reputation System ©'