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Semi auto air rifle bb gun {UPDATE NOW WITH VIDEO}

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: Crna Legija » Tue Jul 26, 2011 4:54 am

jazzman56 wrote:Hey where can you get the galvanized steel pipe ???? I've looked everywhere and bunnings don't seem to have it. Maybe i'm looking in the wrong section, any ideas.


plumbing section of bunnings, they keep it right at the start of the isle in small section of PVC pipe.
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Unread postAuthor: AirgunsSA » Tue Jul 26, 2011 5:18 am

For all those planning to make this gun beware that the 3-way valve acts like a release trigger, meaning that it wont fire when the trigger in pulled only when you release it, it will fire.
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Unread postAuthor: Crna Legija » Tue Jul 26, 2011 5:29 am

AirgunsSA wrote:For all those planning to make this gun beware that the 3-way valve acts like a release trigger, meaning that it wont fire when the trigger in pulled only when you release it, it will fire.


im no expert but i don't think so, its normally open so its two threaded port flow constantly and when you pull the trigger it vents the pilot though the small hole. but even if it does not like your going to hold the button all day you pull and let go within 2 secs.
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Unread postAuthor: LovableAirGuns » Tue Jul 26, 2011 5:51 am

AirgunSA is right it does do that and its a bit weird but its really easy to get used to :)

Hey where can you get the galvanized steel pipe ???? I've looked everywhere and bunnings don't seem to have it. Maybe i'm looking in the wrong section, any ideas.


Go to mitre 10 they have more of a range of plumbing fitting than bunnings :)

By the way im working on a new receiver for bbs since in Adelaide bbs are really easy to get and not that much as splat balls
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Unread postAuthor: Crna Legija » Tue Jul 26, 2011 5:55 am

LovableAirGuns wrote:AirgunSA is right it does do that and its a bit weird but its really easy to get used to :)


hmm i wanna know what it looks like inside now.
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Unread postAuthor: LovableAirGuns » Tue Jul 26, 2011 6:04 am

hmm i wanna know what it looks like inside now.


what do you mean?
Ill be uploading a video soon, probably tonight if not tomorrow or the day after lol.
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Unread postAuthor: AirgunsSA » Tue Jul 26, 2011 6:48 am

Crna Legija wrote:
AirgunsSA wrote:For all those planning to make this gun beware that the 3-way valve acts like a release trigger, meaning that it wont fire when the trigger in pulled only when you release it, it will fire.


im no expert but i don't think so, its normally open so its two threaded port flow constantly and when you pull the trigger it vents the pilot though the small hole. but even if it does not like your going to hold the button all day you pull and let go within 2 secs.


Sorry but I forgot to say I have shot this gun, being a freind of loveableairguns.

Ill explain it more simply, when you pull the trigger it doesnt shoot but when you release it, it fires.
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Unread postAuthor: Crna Legija » Tue Jul 26, 2011 7:01 am

AirgunsSA wrote:Ill explain it more simply, when you pull the trigger it doesnt shoot but when you release it, it fires.


yeah i get it, bit weird most 3ways fire as you pull back.
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Unread postAuthor: POLAND_SPUD » Tue Jul 26, 2011 7:13 am

Ill explain it more simply, when you pull the trigger it doesnt shoot but when you release it, it fires.
that's a normally closed valve

when you press the button it fills the chamber when you realease it it fires the gun


It can be annoying but if you design a spring returned trigger that will keep it pressed in when the gun trigger is in 'not pulled' state you can get it to function the way you want
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Unread postAuthor: LovableAirGuns » Tue Jul 26, 2011 8:06 am

that's a normally closed valve

when you press the button it fills the chamber when you realease it it fires the gun


It can be annoying but if you design a spring returned trigger that will keep it pressed in when the gun trigger is in 'not pulled' state you can get it to function the way you want


ehh i dont mind it isn't really that annoying but what do you mean by a spring return trigger have you got an example coz im a little stuck on that one. knowing its probably the simplest thing ever lol
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Unread postAuthor: POLAND_SPUD » Tue Jul 26, 2011 9:30 am

knowing its probably the simplest thing ever lol
heh, yeah it's a trigger that returns to the original position thx to a spring
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Unread postAuthor: LovableAirGuns » Wed Jul 27, 2011 8:12 am

POLAND_SPUD wrote:
knowing its probably the simplest thing ever lol
heh, yeah it's a trigger that returns to the original position thx to a spring


Hahah ok i probably wont do anything about since i dont mind it but just recently I finished my bb receiver i still have some small work to do on it but then it should be dont although i cant really do a test because i have no bbs but hopefully i get some bbs this weekend from brickworks in Adelaide.
Heres a video of the bb receiver i just recently made :)
Sorry for the spelling mistake.


[youtube]http://www.youtube.com/watch?v=PNa5edHCOdc[/youtube]
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Unread postAuthor: LovableAirGuns » Sun Jul 31, 2011 6:00 am

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Unread postAuthor: AirgunsSA » Mon Aug 01, 2011 7:02 am

that magazine's real ghetto
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Unread postAuthor: LovableAirGuns » Mon Aug 01, 2011 7:20 am

yea but its pretty strong and i found a tube that fits .22 pellets perfectly :D
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