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ammo hopper?

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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ammo hopper?

Unread postAuthor: AxelTheWicked » Wed Aug 19, 2009 8:06 am

hi, i have a question. how can i put an ammo hopper on a pneumatic sniper rifle that i'm building, without all of the ammo spilling into the barrel? (no negative comments, please)
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sniper_rifle.jpg
this is the sniper rifle i'm going to attempt to build, but instead of the breach loader, i want to put in an ammo hopper
sniper_rifle.jpg (25.08 KiB) Viewed 613 times

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Unread postAuthor: FORE!!!! » Wed Aug 19, 2009 8:16 am

maybe something like this??

http://www.youtube.com/watch?v=RuBeEZ1odco

its a ball valve with a hole drilled in the middle,i epoxied a screw in the ball valve to limit the number of marbles that fell threw,with a copper pipe
(hopper) welded to the frame ,or u could just use epoxy
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Unread postAuthor: jackssmirkingrevenge » Wed Aug 19, 2009 8:17 am

A blow forward bolt would be one solution, otherwise you can use a simple tee magazine but you'll need some sort of detent to keep the BBs from rolling out.
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Unread postAuthor: AxelTheWicked » Wed Aug 19, 2009 8:22 am

thank you both. you've both been very helpfull. :D
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Unread postAuthor: inonickname » Wed Aug 19, 2009 8:25 am

I think we need more new guys like this. Hope he sticks around.

His post isn't perfect, but you can read it easily (straight away). He had a valid question, which is normally not the case.. And when given advice he doesn't ask for spoons to get it done.

Thanks Axel, hopefully you stick around :wink:
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Unread postAuthor: Hubb » Wed Aug 19, 2009 8:32 am

I do say you picked a fine launcher to duplicate. For some reason, this is one of my favorites.

Okay. As far as a hopper system goes, I would recommend JSR's advise. Go with a blow forward type bolt with a detent. Should be easy enough to make. If needed, I'll try to draw up a simple idea in a little while for ya.

What kind of ammo are you planning? For a hopper system to work at it's best, the ammo should be spherical, such as marbles, golf balls, paintballs, etc. Also, check out my Improving the Barrel link in my sig. It describes a couple different detent systems that are easily incorporated onto almost any type of launcher (as well as other ideas you may be interested in, such as hopup, sleeving, and polishing the barrel).
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Unread postAuthor: AxelTheWicked » Wed Aug 19, 2009 8:41 am

i was actually planning on just building the original launcher, and then experimenting with the same design, just different modifications. like the stock, the loading mech, and possibly trigger functions. but for ammo, i was planning on just finding some spent CO2 cartidges. lol!
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Unread postAuthor: Hubb » Wed Aug 19, 2009 8:46 am

Here is a simple tee hopper system with a bolt.
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Unread postAuthor: AxelTheWicked » Wed Aug 19, 2009 8:57 am

cool, thanks Hubb. :)
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Unread postAuthor: Willdebeers » Wed Aug 19, 2009 11:20 am

Wow, I once tried to make this but it failed miserebly, so I hope you have more success. Good luck! :D
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Unread postAuthor: AxelTheWicked » Wed Aug 19, 2009 11:26 am

how is it that you failed, Willdebeers?
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