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high pressure burst disk glue?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: Sticky_Tape » Wed Feb 20, 2008 7:24 am

what about hybrids don't you need a high voltage for that?
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Unread postAuthor: jackssmirkingrevenge » Wed Feb 20, 2008 7:32 am

There are people here that have successfully used a piezo ignitor with hybrids like Novacastrian, noname and in the case of this grenaded launcher, chaos.
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Unread postAuthor: Sticky_Tape » Thu Feb 21, 2008 7:11 pm

I think I'm going to turn this into a piston gun with the burstdisk in front of the piston valve would it help preformance?
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Unread postAuthor: STHORNE » Thu Feb 21, 2008 7:52 pm

i think it would (from what i learned on spudfiles) but i have never used burst disks so dont base your decision on my word
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Unread postAuthor: SpudFarm » Thu Feb 21, 2008 9:53 pm

i think the best for you is to keep it as a pneumatic a while to learn the principal behind compressed gass guns. then you make it a combustion and learn some there also. after that just put some gauges and a propane meter and all that stuff on and you got an hybrid.


if you want to know more about hybrids just look at the hybrids at this page :) (feel free to ask question's on peoples hybrids)
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Unread postAuthor: jackssmirkingrevenge » Thu Feb 21, 2008 11:15 pm

A burst disk between the piston and the barrel will definitely help performance as you're giving the piston time to open more before the pressure actually reaches the projectile.
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Unread postAuthor: Sticky_Tape » Fri Feb 22, 2008 1:48 pm

Great I will use that for sure burst disk I would like to know what the best fitting is for the piston to be housed in. I bought a 3/4-1/2-1/2 ruducing tee and I don't know if that is the best fitting to use any suggestions?
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Unread postAuthor: jackssmirkingrevenge » Fri Feb 22, 2008 1:57 pm

The smaller a piston, the lighter you can make it, the less stresses it imposes on your system and the smaller your pilot valve has to be.
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Unread postAuthor: Sticky_Tape » Fri Feb 22, 2008 2:00 pm

So JSR do you know what fitting I could use?
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Unread postAuthor: jackssmirkingrevenge » Fri Feb 22, 2008 2:04 pm

housing the piston in the 1/2" tee sounds like it would work, assuming your barrel is 1/4"?
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Unread postAuthor: Sticky_Tape » Fri Feb 22, 2008 2:07 pm

the barrel is 1/2 inch copper.
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Unread postAuthor: jackssmirkingrevenge » Fri Feb 22, 2008 2:11 pm

In that case, you'll need at least a 3/4" tee to house your piston.
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Unread postAuthor: Sticky_Tape » Fri Feb 22, 2008 2:13 pm

I have a 3/4-1/2-1/2 inch reducing tee if that would work?
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Unread postAuthor: jackssmirkingrevenge » Fri Feb 22, 2008 2:15 pm

As long as the piston is 3/4" in diameter, yes
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Unread postAuthor: Sticky_Tape » Fri Feb 22, 2008 2:17 pm

I am using 3/4 inch poplar dowel for the piston it's nice and light
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