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200 BAR / 2900 PSI gun

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: Ragnarok » Tue Nov 27, 2007 1:30 am

jackssmirkingrevenge wrote:In that case, Dr. JSR recommends you build a punkin chunkin size cannon and fill it with a shock pump :)

ROFL - that's one of the funniest things I have read in ages.
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Unread postAuthor: Infernal Maveric » Tue Nov 27, 2007 2:47 am

I'm not too sure if I have a dive center in the close area. I can always find out, but right now I'm still thinking about the pump as with that, if/when I decide to get an empty scuba tank I can fill that up for free.
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 27, 2007 2:55 am

I can fill that up for free.


I think you're underestimating the effort it takes to take that volume over 1000 psi with a pump - do you have a local airgun club close by, I think in this case it's best of you "try before you buy" ;)
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Unread postAuthor: Infernal Maveric » Tue Nov 27, 2007 3:54 am

I know it would take a shjt load of pumping to get a large volume upto and past 1000PSI, it would save me quite a few bob after about say 5 free fills.
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 27, 2007 4:50 am

plus you'd have arms like tractors :D
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Unread postAuthor: ALIHISGREAT » Wed Nov 28, 2007 4:43 pm

jackssmirkingrevenge wrote:plus you'd have arms like tractors :D


aswell as having a bmi of 500 i also have arms like tractors :D

and as for the scuba tank thing, i'm with jsr, i'm sure you will be glad of it once you get it.
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Unread postAuthor: Hawkeye » Wed Nov 28, 2007 4:56 pm

Aren't those guns using hand pumps just topped up rather than completely re-filled? That makes it a bit easier than starting from empty.
I believe they shoot off the top of 3000 psi.
I can still see one of those pumps being handy for just getting to 500-1000psi. Those would be nice pressures for a homemade gun.
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Unread postAuthor: Infernal Maveric » Wed Nov 28, 2007 5:04 pm

The bidding on eBay has gon higher than what I wanted to pay for the pump...So I guess I'll have to stick to 400PSI with my shock pump...
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Unread postAuthor: iknowmy3tables » Wed Nov 28, 2007 5:13 pm

okay but I'd like to add that you can use other pumps to get your pressures while minimizing your effort, like try first using your compressor then shock pump then the extreme pressures pumps
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Unread postAuthor: Infernal Maveric » Wed Nov 28, 2007 5:17 pm

my compressor out-put is only 150PSI, so there is still some pumping to get it upto 400PSI. The bidding has gone over the price I'm willing to pay for the used AR pump, and I'm not buying a brad new £110 one either.
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Unread postAuthor: jackssmirkingrevenge » Wed Nov 28, 2007 5:31 pm

have you considered this option?
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Unread postAuthor: Infernal Maveric » Wed Nov 28, 2007 6:00 pm

I have seen that but am strongly against the idea of letting off Ozone-polluting gasses off into the atmosphere. And I'm man enough to pump with a shock pump ^^
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Unread postAuthor: spudgunnerwryyyyy » Wed Nov 28, 2007 6:10 pm

That wouldn't let freon out or anything just air as he took the pump off the tank of coolant, read man.
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Unread postAuthor: iknowmy3tables » Wed Nov 28, 2007 6:31 pm

However if you decide to remove it yourself you'll release freon to the atmosphere and it would dammage ozone layer

you release some freon regardless
you can put kinks in the tubes before you cut to minimize released freon to the volume in the pump, I'd do it ozone is an old issue being replaced with global warming, I'd just kink it before removing the pump to minimize it
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Unread postAuthor: Infernal Maveric » Wed Nov 28, 2007 6:47 pm

I personaly would see no real point as i have a shock pump already, and pumping to 400PSI really isn't as hard or time comsuming as being made out to be.
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