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Spring Powered BB gun

Posted: Fri Feb 23, 2007 4:31 am
by Redcoat
Hi this is just an idea i came up with for a spring powered bb gun i am posting it too see if it could actually work and if so if i need to fix anything.
BTW i cant use any air power.The diagram i provided doesnt actually include the trigger mechanism just the actual firing ANd i also thought of building it into a toy ak-47 thanks

Posted: Fri Feb 23, 2007 4:56 am
by skinner
Thats exactly how Air rifles work, you set the spring by breaking the gun in two until it clicks into place. then load the pellet, then close the gun fully, then pull the trigger, the air in front of the spring is at atmospheric pressure, until the trigger is pulled, the spring is released and then the air in front of the spring pressurizes, then forces the pellet down the barrel.

So, its not really a new idea, as its already been done back in the day. but it would still be cool if you made one yourself.

check this site out, it might give you a little help.

http://www.cse.iitk.ac.in/~amit/courses ... index.html

cheers.

skinner

Posted: Fri Feb 23, 2007 6:01 am
by Redcoat
thanks for that it really helped :D but if i made this design with this diagram i drew up would it still work

thanks a lot :D :D

Posted: Fri Feb 23, 2007 7:55 am
by chaos
Mate you just gave me a farking awesome idea thanks

peace
chaos

Posted: Fri Feb 23, 2007 7:36 pm
by Redcoat
no worries mate :wink: but would this design work?
thanks

Posted: Fri Feb 23, 2007 8:00 pm
by judgment_arms
You don’t need that little peg on the end of the piston, if anything it’ll decrease performance by not allowing as much air to get in the barrel.

Posted: Fri Feb 23, 2007 8:20 pm
by Redcoat
So if i remove that peg to improve performance and use that design it will work? :idea:

thanks

Posted: Fri Feb 23, 2007 8:20 pm
by Mr.Russ
i think he has it kind of wrong here, on his piston he has the peg thing to hit the bb, forcing it out(i think thats what he means)

Spring powered bb guns have plungers the push air out once youve cocked it and shot.

Posted: Fri Feb 23, 2007 8:22 pm
by Redcoat
thats what i mean i didnt realise it had anything to do with air compression i thought is was just the force in the spring that shot it out

Posted: Fri Feb 23, 2007 8:28 pm
by Mr.Russ
well there is the piston with the spring, you cock it(compresses spring) and when you shoot the spring pushes the trapped air forward propelling the bb

I believe that is how they work anyway

Posted: Fri Feb 23, 2007 8:35 pm
by judgment_arms
Yeah Mr.Russ, that’s pretty much how they work.

Good luck to ya, Imperialist1, springers ain’t the easiest thing in the world to make.

Posted: Fri Feb 23, 2007 8:42 pm
by Redcoat
then what would be the easiest thing to make im low on cash i live in sydney where i cant by a bloody bb gun and all i want to do is have a bb gun and i need to know whats the best and cheapest way of building one without a co2 tank or compresssor

thanks

Posted: Fri Feb 23, 2007 8:54 pm
by judgment_arms
Wellllll, if airguns are illegal where you live then maybe you shouldn’t make one…
Instead make an RPG, model rockets are legal in Australia right?

Posted: Fri Feb 23, 2007 9:01 pm
by Redcoat
judgment_arms wrote:Wellllll, if airguns are illegal where you live then maybe you shouldn’t make one…
Instead make an RPG, model rockets are legal in Australia right?

well yeah but hella expensive but u gave me a friggin good idea of making an rpg im gonna make one thanks a truck load :D :D :D My old potato gun blew a crack in the side and its broken but i will salvage it and make an rpg like right now
i'll post it when im done. Thanks

Posted: Fri Feb 23, 2007 9:28 pm
by judgment_arms
I hope he doesn’t frag himself. If he doesn’t come back, it wasn’t my fault…