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Simple Semi Automatic Concept

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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Simple Semi Automatic Concept

Unread postAuthor: sagthegreat » Sat Mar 03, 2012 2:09 pm

I saw this on the forums a few times but I want to know if this would get me a good amount of power, im looking for above 300FPS



[/img]
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Simple gun concept.png
Concept Drawing

Basically tank connected to blow gun connected to barrel
Simple gun concept.png (20.27 KiB) Viewed 654 times

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Unread postAuthor: Gun Freak » Sat Mar 03, 2012 2:21 pm

That ain't how a blowgun works. They're inline.
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Re: Simple Semi Automatic Concept

Unread postAuthor: jackssmirkingrevenge » Sat Mar 03, 2012 2:50 pm

sagthegreat wrote:I want to know if this would get me a good amount of power, im looking for above 300FPS


300 fps is a velocity, not a level of power.

What projectiles, barrel length, chamber size and air pressure do you intend to use, and how many shots do you expect to get per fill?
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Unread postAuthor: sagthegreat » Sat Mar 03, 2012 2:51 pm

I forgot to add this, but there should be a hose connecting the air chamber to the blow gun[/img]
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Unread postAuthor: Gun Freak » Sat Mar 03, 2012 2:52 pm

No there shouldn't be. That would be disasterous.
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Unread postAuthor: sagthegreat » Sat Mar 03, 2012 3:58 pm

lol is there any way to use a air gun and a air chamber without a sprinkler valve, thanks for the help gunfreak (ur youtube vids are awesome)
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Unread postAuthor: wyz2285 » Sat Mar 03, 2012 4:30 pm

How do you plan on a semi with a single standard blowgun? :lol:
(gun freak saw your semi/full auto it´s just a cloud bbmg with a detente isn´t it :lol: )
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: Gun Freak » Sat Mar 03, 2012 5:53 pm

If your chamber is big enough, a quick pull of the blowgun trigger won't let out all the air, wyz ;)

Yes that's all it is, just majorly over-engineered :D
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Unread postAuthor: wyz2285 » Sat Mar 03, 2012 6:36 pm

Well yes, if a 2l tank at 100psi for 5 shots it's ok for you...
I have posted a simple way about connecting a smal ball valve to the blowgun trigger to mechanically making a semi valve system, you can try it out.
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: Gun Freak » Sat Mar 03, 2012 6:39 pm

Well yes, if a 2l tank at 100psi for 5 shots it's ok for you...

Is that a reference to my PCP :D
That thing gets over 30 shots on 300 psi (down to 150 psi)
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Unread postAuthor: wyz2285 » Sat Mar 03, 2012 6:48 pm

Lol of course not, it was a personal experience I had in the beginning of airguning. For now your pcp it's still more advanced than my, my still need the hammer housing to be functional.
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: Gun Freak » Sat Mar 03, 2012 6:51 pm

Yeah I'm waiting for you to finish the thing! I'm excited to see how it turns out... we can compare power...
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Unread postAuthor: wyz2285 » Sat Mar 03, 2012 7:07 pm

Well school is keeping me really busy lately :(
But won't take too much for me to make it to shot in full power, but compare power would be hard, I use airsoft bbs, not pellets. They are lighter and pellets are pointed. But I did managed to have more power with my semi at 300psi against my friend's .144 cal spring pellet, he used .42g pointed pellet and me with .40g bb
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: sagthegreat » Sat Mar 03, 2012 8:10 pm

i want to know the most basic way to make a powerful semi auto gun in a compact mech

ps. wyz2285 good luck on ur gun
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Unread postAuthor: Gun Freak » Sat Mar 03, 2012 8:33 pm

Wyz, mine is airsoft caliber :)

Sag, get a high pressure tank, hook that up to a blowgun, add a barrel and loading mech, and that's semi auto. Doesn't get any simpler. Yes I know that is basically what you originally proposed in this thread :D
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