Lukes Uber ghetto burst disk

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
User avatar
lukemc
Corporal
Corporal
Posts: 565
Joined: Sun Feb 25, 2007 8:48 am
Location: NY

Wed May 16, 2007 7:10 pm

well i had this idea for a threaded shrader when i found a fitting that fit nicely on a copper shrader stem. it was to big to solder so just put some JB weld on and let it dry. i needed to know if it would work without my parents driving me to lowes. So i came up with this beautiful burst disk to test my shrader. if you notice about everything is crooked and replaceable if needed.


schrader
Image

aluminum foil disk
Image

the whole setup
Image


the performance of burst disks amazed me i shot a loose fitting bolt 50 yards at 30 psi. i tried pressureizing it and droping a nail down hoping to pop it but all that happened was tsssssssssssss and no pop. if you have and disk suggestions please post
"Those who are different change the world. Those who are the same keep it that way"
User avatar
Mr.Russ
Specialist 4
Specialist 4
Posts: 429
Joined: Fri Jan 26, 2007 9:07 pm

Wed May 16, 2007 7:48 pm

put another layer of foil in, take it up to 60 psi
User avatar
lukemc
Corporal
Corporal
Posts: 565
Joined: Sun Feb 25, 2007 8:48 am
Location: NY

Wed May 16, 2007 8:10 pm

accualy i just did that. i wasnt sure the pressure rating of the bottle so i put the hose thought a hole in my garage door (for my kitty to get in) and pumped it up. it started leaking at about 40psi around the schrader. im not woried because 1/8" plastic bottle is much different than 1/2" double layered pvc. but sure enought about 60pis i got a pop
"Those who are different change the world. Those who are the same keep it that way"
sandman
Corporal 2
Corporal 2
Posts: 672
Joined: Thu Mar 15, 2007 6:59 pm

Wed May 16, 2007 8:24 pm

ive taken bottles over 90 psi, you should be ok going higher
User avatar
ShowNoMercy
Sergeant
Sergeant
Posts: 1094
Joined: Mon Mar 19, 2007 8:08 am
Location: Jersey Bitches!

Wed May 16, 2007 8:27 pm

Whats the point of this setup?
Jesus saves, no need to pray
The gates of pearl have turned to gold
It seems you've lost your way
User avatar
pyromaniac
Corporal 4
Corporal 4
Posts: 805
Joined: Tue Feb 27, 2007 7:18 pm
Location: MO

Wed May 16, 2007 8:28 pm

Mini burst disks rock! I made one awhile ago I was impressed by the performance. also i like the idea for a screw on schrader.
:pottytrain3:
sandman
Corporal 2
Corporal 2
Posts: 672
Joined: Thu Mar 15, 2007 6:59 pm

Wed May 16, 2007 8:34 pm

ShowNoMercy wrote:Whats the point of this setup?
ghettoness, i like it cause it reminds me of the bottle rockets i made last year
User avatar
bboymatty
Specialist
Specialist
Posts: 108
Joined: Sun Feb 19, 2006 12:12 pm

Wed May 16, 2007 9:01 pm

do you think you could use a burst disk setup to make a mortar?
User avatar
spudthug
Corporal 5
Corporal 5
Posts: 936
Joined: Mon Feb 26, 2007 9:02 pm
Location: johnsonburg, Pa USA
Contact:

Wed May 16, 2007 9:09 pm

ummm duh..@bboymatty

i have one and no name has one
4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
User avatar
noname
First Sergeant 4
First Sergeant 4
Posts: 2698
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA

Wed May 16, 2007 10:05 pm

<a href="http://www.spudfiles.com/forums/burst-d ... t7500.html"> Apparently you missed this one.</a>
Try chip bag burst discs. With a 1" union they burst at exactly 100 psi, yours is a bit smaller so they'll probably hold about 120. Just sheild yourself with some plywood and keep pumping. To see how much pressure my burst disc gun could hold, I layered 5 chip bags, put the gun in a trash can, put another trash can over the other one, and then the whole setup in a really big trash can, with the pump's hose sticking out so I could still pump. It held 180 psi and I didn't take it higher.
User avatar
lukemc
Corporal
Corporal
Posts: 565
Joined: Sun Feb 25, 2007 8:48 am
Location: NY

Thu May 17, 2007 9:28 am

i drop sharp stuff down there but i cant get it to pop spudthug
"Those who are different change the world. Those who are the same keep it that way"
Post Reply