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A place to ask general spud cannon related questions.
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Unread postAuthor: Ragnarok » Mon Feb 23, 2009 12:55 pm

psycix wrote:You could also determine difference between the volume the whole tank takes up and the inside volume.

That'd be quite a lot more work to be honest, because you'd need a pretty accurate internal volume measurement, which would take a lot of time and effort to pull off properly.
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Unread postAuthor: jackssmirkingrevenge » Tue Feb 24, 2009 1:16 am

Ragnarok wrote:
psycix wrote:You could also determine difference between the volume the whole tank takes up and the inside volume.

That'd be quite a lot more work to be honest, because you'd need a pretty accurate internal volume measurement, which would take a lot of time and effort to pull off properly.


Or you could just look for a pressure rating.

I'm just saying it's not 1cm thick. That would make it ridiculously overengineered for its purpose, and if you wanted a high safety factor, a pop-off valve would be an infinitely cheaper and more practical option.
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Unread postAuthor: inonickname » Tue Feb 24, 2009 2:25 am

jackssmirkingrevenge wrote:
Ragnarok wrote:
psycix wrote:You could also determine difference between the volume the whole tank takes up and the inside volume.

That'd be quite a lot more work to be honest, because you'd need a pretty accurate internal volume measurement, which would take a lot of time and effort to pull off properly.


Or you could just look for a pressure rating.

I'm just saying it's not 1cm thick. That would make it ridiculously overengineered for its purpose, and if you wanted a high safety factor, a pop-off valve would be an infinitely cheaper and more practical option.


You're most likely correct..I'll get a measurement with digital calipers next time I'm down the shed.

Though in all honesty, a fridge compressor won't phase it in the slightest.

Will edit in the thickness, going to check it now.

Edit: just checked it, It's around .45 cm thick. Still, It wouldn't phase me to use it as a pressure chamber for a fridge compressor at all. It withstood 250 psi hydrotesting (no leaks either), would have put more into it but without pulling out a shock pump or getting a fridge compressor I wasn't able to..
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Unread postAuthor: psycix » Wed Feb 25, 2009 2:36 pm

You should hydro-test it higher.
Note that it is always good to have a safety margin between your highest hydro test and the working pressure.
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