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Twitches Marble Sniper NEW PICS

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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Twitches Marble Sniper NEW PICS

Unread postAuthor: TwitchTheAussie » Mon Apr 09, 2007 2:08 am

Here they are.

Image

Im planning on adding a few extras like a scope, co2 regulator or paintball tank and a bipod.

The chamber is 3 feet long and barrel will be about 4 feet long. I might add some supports and Im making a fancy grip in school for the blow gun trigger.

Any ideas for improvements?

And now for the Version 1.5 pics.

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Last edited by TwitchTheAussie on Tue Apr 10, 2007 11:32 pm, edited 3 times in total.
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Unread postAuthor: Mr.Russ » Mon Apr 09, 2007 2:34 am

How are you gonna make that bend in the bottom of the stock?
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Unread postAuthor: TwitchTheAussie » Mon Apr 09, 2007 2:35 am

Im good at pipe bending. I've got the right stuff
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Unread postAuthor: Flying_Salt » Mon Apr 09, 2007 2:41 am

Won't pvc weaken if its melted and/or bent? That'll warp and mess it up. Unless this is copper...
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Unread postAuthor: Mr.Russ » Mon Apr 09, 2007 2:44 am

I can bend pipe too. But on that sharp of an angle? that is going to restrict flow pretty bad.
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Unread postAuthor: TwitchTheAussie » Mon Apr 09, 2007 2:49 am

Flying_Salt wrote:Won't pvc weaken if its melted and/or bent? That'll warp and mess it up. Unless this is copper...


Steel all the way for the chamber. Barrels copper though.

Mr.Russ Posted: 04/09/2007 18:44 PM Post subject:

I can bend pipe too. But on that sharp of an angle? that is going to restrict flow pretty bad.

I was planning on making it less steep. This is just an early drawing of it.
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Unread postAuthor: Mr.Russ » Mon Apr 09, 2007 2:52 am

oh well you said your using steel for a chamber?

if your using PVC i would jsut buy a 90 degree elbow, then bend it a little bit more.
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Unread postAuthor: jackssmirkingrevenge » Mon Apr 09, 2007 3:09 am

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Unread postAuthor: Mr.Russ » Mon Apr 09, 2007 3:22 am

thats a good plan, but if you made it I would make the 'stock' 1" because it feels comfier.
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Unread postAuthor: integral » Mon Apr 09, 2007 4:58 am

the thing i dont like about that plan is its breech. not a big fan of the floating barrel not really stable and sealed kinda scenario.

ur plan looks like its rockin!
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Unread postAuthor: shud_b_rite » Mon Apr 09, 2007 5:33 am

how bout a gauge? And yea if you do add a scope that would look friggin wicked
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Unread postAuthor: locksmith » Mon Apr 09, 2007 11:11 am

build on never hurts to try new designs.well unless you use the wrong stuff then you might get hurt
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Unread postAuthor: Blitz » Mon Apr 09, 2007 11:20 am

Looks like most people's rifle-style guns, but that bend does concern me. I make it a point never to use more than a 90 degree bend anywhere. I've never built a cannon from just metal yet, but that's one of my upcoming projects.

Think about the airflow. You also may wanna consider using that as just a handle and not your air chamber; re-route your air into a smallish chamber below the barrel.
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Unread postAuthor: Velocity » Mon Apr 09, 2007 11:41 am

Looking good. But I am going to have to agree with everyone else about the flow restrictions on the stock. If I were you, I would make it a standard over under. However, instead of using 90* bends, use tee's. Then, block off the one part of the tee's. You can then connect a stock to this part of the gun without any restrictions on flow. I think that is the same principle as the gun which FMJ (or Jackssmirkingrevenge) posted (I didn't actually look at the gun cause of crappy internet connection, so sorry if i am wrong).
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Unread postAuthor: iknowmy3tables » Mon Apr 09, 2007 12:14 pm

hes right the capped off tee thing is similar to a very common and successful design for a solenoid rifle like the one jack showed

a good pneumatic should have an easy wide and short path from the tank to the barrel. the caped off the tee makes the flow more direct
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