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40mm Rubber Bullet gun VIDEO UPDATE

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: Solar » Fri May 15, 2009 7:34 pm

ARG! part moved in CNC and might need to be scrapped. Looks like tomorrow....$#%^#$%$#
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Unread postAuthor: Hotwired » Fri May 15, 2009 7:47 pm

How can a tube magazine get naffed up.

Do you have to pay for it again?
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Unread postAuthor: far_cry » Fri May 15, 2009 9:17 pm

are you working cnc programmer you know lathe mill all thos stuff

you must start make and sell :D

very very clean canon
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Unread postAuthor: inonickname » Fri May 15, 2009 10:58 pm

far_cry wrote:are you working cnc programmer you know lathe mill all thos stuff

you must start make and sell :D

very very clean canon


He does sell them. As said, he does this for a living (if you could call it that)
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Unread postAuthor: Solar » Fri May 15, 2009 11:53 pm

Not for a living just yet. Off to make the big presentation to the military and police forces next week at the FPED VII show. The rubber bullet gun is a mod for the Eclipse, but will soon be it's own gun that has a 1.5"-4" adjustable receiver and magazine feed.

The tube mag came out ok, but the t-joint receiver slipped when it was being honed out to match the adapter sleeve for the magazine and got all screwed up. We are back at it tomorrow and might have to remake the part if this one can't be saved. It is out of round and is interfering with the bolt and has some nastiness inside but we will get it right.
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Unread postAuthor: Tony.Knaak » Sat May 16, 2009 1:51 am

So is the t - joint going to be angled to the side for the mag mounting? In the initial photographs and in the video the T faces upward. I saw in the additional photos that the T was turned to the side.

The only I ask is because I assume the mag would block the holo sight.

So the air cylinder on the side actuates the bolt forward prior to fire?
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Unread postAuthor: inonickname » Sat May 16, 2009 1:54 am

Yeh. It taps the same regulated air source as the trigger (300 psi) and it slams shut right before the valve actuates. Could probably cut your fingers off.

He mentioned something to do with a sten, which has a side facing magazine so it probably will have the mag sideways.
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Unread postAuthor: Solar » Sat May 16, 2009 1:37 pm

Yes, side facing. Off to try and finish it right now. Fingers? oh yeah... just don't be putting your head in there with one one the trigger. (in reference to someone's earlier typo in which we all have fingers on our head now.)

It can be rotated to handle a vertical hopper like a paintball gun tho.. a pneumatic hose feeder would be fun too. A future version will be a feed er parallel to the barrel where the balls go a round a corner like the PGP paintball pistols.
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Unread postAuthor: POLAND_SPUD » Sat May 16, 2009 3:27 pm

nice...

makes my think why I didn't think of putting the air cylinder on the outside of the cannon :?
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Unread postAuthor: deathbyDWV » Sat May 16, 2009 9:16 pm

VERY NICE!!! I wish i had the stuff to make high quality guns like this. This deserves some smilies doin the wave!!! :wav:
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Unread postAuthor: Solar » Sun May 17, 2009 3:33 am

ok, it all works! I can load 5 in the mag and 1 in the chamber. I might be able to squeeze the 6th in the mag but I am happy with what I have. Paint is drying, if I get a chance in the next 8 hours I will post a vid of it working. I have to set a super slow shot and find a catcher to do it inside before I leave since it is night and I leave in the morning. Either that or just show the mechanism working.
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Unread postAuthor: Solar » Sun May 17, 2009 11:26 am

Sorry all. No sleep until DC. Didn't have time to get shots, but I will be posting from FPED VII if they let me take pictures... Wish me luck.
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Unread postAuthor: Lentamentalisk » Sun May 17, 2009 12:48 pm

Go get'em tiger! Best of luck with the pigs and hawks! With such a nice contraption, they had better be impressed.
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Unread postAuthor: chenslee » Tue Jun 16, 2009 4:06 pm

100% pure awesome. Where are you getting the 40mm rubber balls?

NEVERMIND - I found them!

http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=18585

They are little dog balls!!

The original concept for my cannon was 40mm, but abandoned it because barrel material and ammo were not readily available. These little balls are 6 for $5. My tennis balls were 200 for $0.
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Unread postAuthor: Butch902 » Mon Dec 20, 2010 8:42 am

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