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semi-auto bb gun!!

Built a BB Machine Gun? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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semi-auto bb gun!!

Unread postAuthor: soka » Wed Sep 15, 2010 9:39 am

Hello, i made a semi auto bb gun, Jules 56 has inspired me with his system :
http://patator.frbb.net/systemes-de-tir ... -t8351.htm

We can make great things using the pressure of the chamber instead of trying to make a gbb which is much more complicated.

http://www.youtube.com/watch?v=fk8FdKLvmZE

Have a nice day!!
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 15, 2010 9:55 am

A little bit crude but very ingenious, I like!

What pressure are you running at and what's the power like?
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Unread postAuthor: soka » Wed Sep 15, 2010 10:08 am

3 bar, and the bb go as far as a 1 joule bb gun . I think i can go up to 5bars with my crapy piston but i dont have compressor, i only got a shock pump which is very howfull to pump my extinguisher!

Take this gun as a prototype , i will ameliorate it!
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Unread postAuthor: lozz08 » Wed Sep 15, 2010 10:43 am

So the qev piston is attached to the rod that recocks it... how does the piston attach to the rod?

Thanks for posting on this forum.

Edit oh wait i get it now the pilot side is attached to another piston and when it pilots the spring pushes it back. Sick. I'm totally gonna use that.
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Unread postAuthor: POLAND_SPUD » Wed Sep 15, 2010 12:00 pm

but very ingenious
dude, it is an air cylinder :D

@soka
heh ignore what I wrote above it's a personal revenge :wink: I've got a gun that uses the same loading mechanism
Good work

ohh btw, have you considered building a fridge compressor ?
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Unread postAuthor: soka » Wed Sep 15, 2010 12:51 pm

I would like to find a fridge compressor, i am thinking of it everydays.
but its a little hard to find in france.
I will post other movies and damage etc....
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 15, 2010 12:54 pm

POLAND_SPUD wrote:dude, it is an air cylinder


Never said it's bad idea, just too complex for my liking - not something I'd bother with myself, but it's pleasant to watch the results of those who have gone through the effort ;)
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Unread postAuthor: soka » Sun Sep 19, 2010 6:41 am

hello , i have found some good piece of alu to make a stock and something to hide the plumbery stuff.
And i made an other verin more resistant to pressure, i can go to 10 bars easyly.



Image

Image

sory for the pictures , iwill post others better.
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Unread postAuthor: soka » Mon Sep 20, 2010 1:39 pm

So better pictures for you !
Soon i will put the scope on, it will have a terrible look!!

Image

Image

Image
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Unread postAuthor: Gun Freak » Mon Sep 20, 2010 4:23 pm

soka wrote:Soon i will put the scope on, it will have a terrible look!!

I think you mean "good" look. The french tend to use the word "terrible" in a good sense, no? Like, "pas terrible", that isn't a bad thing, right?
Anyway, this gun needs a good coat of paint and then it will look awsome! Good job dude :D
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