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The détruisezier

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: frozebyte » Sat Jul 18, 2009 10:42 am

The plastic bag wads you use, do you reuse them? (heh, we'll see about your self-acclaimed environmental friendliness :D:D) Are they like a single layer and.... soft?
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Unread postAuthor: inonickname » Sat Jul 18, 2009 10:44 am

I reuse them if I find them - fairly often they get stuck in front of the marble and go for a ride...a short one at that.

Me > Environment
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Unread postAuthor: far_cry » Sat Jul 18, 2009 10:52 am

inonickname wrote:Poland, I don't mind the chamber size. I realize that at 400 psi I could probably divide it by 3 and still get similar performance, though I don't mind seen as it's a compressor doing the work, not me :lol:



and i was want to tell you about the unnessary air in the trigger system
until i see this

inonickname
good work you did, i love full metal air rifles (now we can call it air rifle)
you did wonderful work with the barrel too ,and thats make me wonder , why anyone did not ask you how did you make the rifling to the aluminum barrel ??
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Last edited by far_cry on Sat Jul 18, 2009 10:58 am, edited 4 times in total.
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Unread postAuthor: inonickname » Sat Jul 18, 2009 11:00 am

far_cry wrote:
inonickname wrote:Poland, I don't mind the chamber size. I realize that at 400 psi I could probably divide it by 3 and still get similar performance, though I don't mind seen as it's a compressor doing the work, not me :lol:



and i was want to tell you about the unnessary air in the trigger system
until i see this

inonickname
good work you did, i love full metal air rifles (now we can call it air rifle)
you did wonderful work with the barrel too ,and thats make me wonder , how did you make the rifling to the aluminum barrel ??


http://www.spudfiles.com/forums/how-to- ... 18699.html
Bad pictures, but the text will get the message across nicely.

It took me several tries to get the tool just right, but once you've got it it will only take minutes to rifle the barrel. (depending on how deep it is, and how tank you are)
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Unread postAuthor: frozebyte » Sat Jul 18, 2009 11:04 am

far_cry theres a recent topic on rifling an aluminium barrel by inonickname if im not wrong :D The one with the camera which focuses on the background instead of what he wants it to. Its here: http://www.spudfiles.com/forums/how-to- ... 18699.html

His method is supposedly easier to work with with softer metals(aluminium)

inonickname, is that you(more than)environment? Doesn't seem that environmentally friendly if those wads are mostly destroyed after a shot, but at least you found a way to give those plastic bags a final ride :D
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Unread postAuthor: far_cry » Sat Jul 18, 2009 11:24 am

i know of thos 2 topics and i did not know that they belong to him .
and i was think that he did the rifling with a deferent method
thank
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Unread postAuthor: spudmanb3 » Sat Jul 18, 2009 11:41 am

Fantastic! How did you rifle your barrel?

p.s. it does look like chaos' gun (I thought it was until I decided to read)

.
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Last edited by spudmanb3 on Sat Jul 18, 2009 11:42 am, edited 1 time in total.
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Unread postAuthor: frozebyte » Sat Jul 18, 2009 11:41 am

Oh i see, im guessing the two barrels in the two topics are the same :D
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Unread postAuthor: Brian the brain » Sat Jul 18, 2009 4:03 pm

Why not carve a stock for it?

Could you describe the rifling process a little more, like...how is the nut sharpened?

I got pretty close last try, but halway into the barrel the nut buried itself into the wall...
Why doesn't that happen here??

Anyway...very good job, just....it deserves a wooden stock and a bolt... :D
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Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: twizi » Sat Jul 18, 2009 4:37 pm

its not my gun but should you have a block of aluminum in between the barrel and chamber cause it looked like the chamber and barrel are bending with that hose clamp at the end
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Unread postAuthor: inonickname » Sat Jul 18, 2009 6:30 pm

@ Btb, at the start I was thinking minimalistic mainly..but I reckon you're on the money, with a 4x20 scope and a nice drop stock I could probably make this thing look quite nice

The nut has a taper cut into it to make cutting the riflings easier, similar to a tapered tap. Leave the back at full height. Next, cut away (starting at the highest part of the bolt) at the angle you want the riflings at, keeping it identical on either side. Come to think of it, it's not very easy to explain..I'll get photos with the good camera asap.

Twizi, the elbow that the chamber is supported by is at an angle (which sure aint 90) so they end up meeting up.

Edit: I really need to get some polymorph to make a handle with..
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Unread postAuthor: Mitchza89 » Sat Jul 18, 2009 7:50 pm

Wow amazing gun mate. I love the configuration. At 400psi, you'll get a shite load of power even with the slightly constricted flow.

Job well done :)
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Unread postAuthor: inonickname » Sat Jul 18, 2009 10:59 pm

Video..

[youtube]http://www.youtube.com/watch?v=Gjprczet3PQ[/youtube]
Shot from way back, standing in our neighbors backyard (cam was closer)..I was careless with the first shot and missed, which was kinda lame.

Dad was going on about "it's not accurate enough to use a scope on". So I'm like "bs"..He shut up when I hit a tictac container side on first shot, and that's just with dodgy ass iron sights. So hopefully it will have a scope soon..
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Unread postAuthor: far_cry » Sun Jul 19, 2009 7:11 am

we wait for the 400 psi shoots

100 psi is just less than 8 bars !!!

damage damage damage damage damage damage :twisted: :twisted: :twisted: :twisted:
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Unread postAuthor: inonickname » Tue Jul 21, 2009 6:03 am

Oh by the way here's what's done on the pump so far:
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Compression olive epoxied onto aluminum pump body

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Check valve before epoxy casting

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Fill QD

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Piston (floating o-ring type)

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Base and fill hose setup

I'll stay to 300 psi to keep that hose alive for the time being- hopefully I can get it replaced soon..


_____________

I tested the pump tonight, and found I shouldn't have crapped around with the check valve. The check valve did nothing, and the nearest check valve was the one in the QD on my gun- nowhere near close enough. I've now modified a nice brass check valve by turning it round and epoxying it into the pump cylinder..Dead space will be near zero.

This pump will be used at 300 psi due to the airline hose used..

300 psi shots coming when the epoxy is set up, sometime after school tomorrow.
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