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burst disk

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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burst disk

Unread postAuthor: jon_89 » Fri Mar 14, 2008 1:54 am

i was reading the wiki about heating a burst disk. anybody know about this or tried it?
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Unread postAuthor: jackssmirkingrevenge » Fri Mar 14, 2008 1:59 am

I had made a burst disk launcher that had a loop of nichrome wire resting against a mylar disk that was actuated when current was passed through the loop, it worked but was too complicated to set up.
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Unread postAuthor: jon_89 » Fri Mar 14, 2008 2:05 am

how big where your batteries or did you use ac current?
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Unread postAuthor: Novacastrian » Fri Mar 14, 2008 2:10 am

jon_89 wrote:how big where your batteries or did you use ac current?


Knowing JSR and his love of all things efficient he probably used a treadmill or similar to generate the current needed. :roll: :lol:

Jon, can we have some more details as to what you are designing, like why did you want to know about burst discs? :)
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Unread postAuthor: jackssmirkingrevenge » Fri Mar 14, 2008 2:15 am

jon_89 wrote:how big where your batteries or did you use ac current?


I had used an old Ericsson cellphone charger, I think it was 9 volt DC. I have some pictures of the setup on my home PC, I'll post them later.

Knowing JSR and his love of all things efficient he probably used a treadmill or similar to generate the current needed. :roll: :lol:


I tried that but the hamster died before the disk burst :roll: :D
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Unread postAuthor: jon_89 » Fri Mar 14, 2008 2:16 am

oh i was just looking over the wiki and thought it would be an interesting concept to try.
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Unread postAuthor: jackssmirkingrevenge » Fri Mar 14, 2008 2:19 am

I think it's easier to make a pneumatically triggered burst disk, no fiddly electronics and insulation worries.
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Unread postAuthor: Hubb » Fri Mar 14, 2008 2:39 am

Even easier than that would be puncturing the burst disk manually, such as in the recent Compact Grenade Launcher by Davidvaini.

JSR, did that nichrome wire melt once the current was passed through it?

And, sorry about your hamster.
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Unread postAuthor: jackssmirkingrevenge » Fri Mar 14, 2008 2:44 am

hubb017 wrote:JSR, did that nichrome wire melt once the current was passed through it?


No, that's the reason for using nichrome wire. You can find it in the heating elements of electrical heaters etc., it's not hard to obtain.

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Unread postAuthor: FeLeX » Fri Mar 14, 2008 4:30 pm

How long did it take to melt? Could this be used in one of your burst disk cartridges?
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