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| iknowmy3tables |
 Posted: 05/28/2007 12:23 PM Post subject: deus ex machina how to, NEW update: animation |
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Brigadier General
Joined: 15 Dec 2006
Posts: 1100
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alright I've been making these diagrams but this HOW-TO is not complete
but I realized I've been getting more and more lazy on making this so I might as well post what I have before i get so lazy i never post it
material:
bandsaw or scroll saw
dremel or stick file (takes awhile i finally got a dreel when the project was almost done so I know its posible)
router (for bolt action slot or else you'll have to find another way)
bolts
what did I miss
1.25pvc
3/4" pvc
3/4" coupling 1+ and additional for how many cartridges you want
3+ 3/4"x1" brushings
the short depth of the 2x4 are almost perfect for these shells
the side (left and right) walls will be made from thin plexiglass, and the magazine spring should be made from music wire
important info the cartridge ejection system works by having the bolt on the oposite side hit the rim of the cartridge causing it to flick off and out the ejection port, the secret to make this work is to make the front coupling very losess and the bolt pretty tighter but hang on by half a centimeter so when you first use this you will have to use keep on ajusting the friction in the front coupling and bolt, I recomend grinding the front with somthing smooth or use a polishing brush bit on your dremel, and for the bolt I found that a preparing a drop of JB weld on some paper then smearing it all over the front evenly to create a new layer works pretty well
NEW UPDATE AN ANIMATED DIAGRAM
really the new cartridge should instantly appear because this is magazine fed, but I forgot and I already made the frames without it by the time I realized
here a video of my deus ex machina which is diffrent only in terms of sizes and fittings used to accomplish the task this way involves lots of grinding down at the belt sander but it includes all the basic parts,  http://s30.photobucket.com/albums/c328/09731218/?action=view¤t=D SCF0890.flv
I used an original blowgun mod to fill and actuate the valve
http://www.spudfiles.com/forums/semi-blowgun-t6877.html
here all the other threads about the deus ex machina
http://www.spudfiles.com/forums/deus-ex-machina-offical-thread-t7723.h tml
http://www.spudfiles.com/forums/deus-ex-machina-t7864.html
http://www.spudfiles.com/forums/deus-ex-machina-how-to-t8418.html
Last edited by iknowmy3tables on 03/08/2008 17:44 PM; edited 8 times in total |
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| goathunter |
| Posted: 05/28/2007 12:27 PM Post subject: |
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The avatarless one
Joined: 15 Feb 2007
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| Well, you beat me in posting a how-to on a competition gun.Looks good so far,but still a little vague.Looking forward to seeing the plans done. |
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| iknowmy3tables |
| Posted: 05/28/2007 15:29 PM Post subject: |
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Joined: 15 Dec 2006
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| technically jack beat us both by making an extera breif how to on his thread that was one picture with instuctions |
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| jackssmirkingrevenge |
| Posted: 05/28/2007 18:50 PM Post subject: |
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space monkey
Joined: 15 Mar 2007
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| iknowmy3tables wrote: | | technically jack beat us both by making an extera breif how to on his thread that was one picture with instuctions |
for a simple coaxial you don't need much else, in fact I'm surprised people requested a how-to at all  |
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| vanmaineac |
| Posted: 05/29/2007 18:26 PM Post subject: |
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Joined: 29 Jan 2007
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What pushes out the cartridge after firing
is it just the pressure from the spring behind the cartridges
Anything would be appreciated |
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| iknowmy3tables |
| Posted: 05/30/2007 6:48 AM Post subject: |
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| good question bing, edit type type type how's that |
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| vanmaineac |
| Posted: 05/30/2007 7:14 AM Post subject: |
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| myself |
| Posted: 09/10/2007 18:02 PM Post subject: |
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| The only thing i don't really get is the part that explains how the bolt is moved and where the handle for the bolt is screwed in |
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| myself |
| Posted: 09/11/2007 14:57 PM Post subject: |
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| oh yea how is this air tight and how does the air tank attach |
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| iknowmy3tables |
| Posted: 09/11/2007 16:21 PM Post subject: |
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Brigadier General
Joined: 15 Dec 2006
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well... in the video on the opposite side there is a groove I cut with a router the groove loosely fits the screw/handle/action, the screw is attached to the bolt and that screw is used to toggle the bolt
and how is it air tight, its not really "air tight" but its not really holding pressure its directing flow. just like how breech loading guns don't have perfect o-ring seals and most leak to some degree, they just use very close friction seals, just like this were the small sleeving off parts add a friction seal to direct 99% of flow.
and you attach the whole thing on to the valve just like how you attach a 1.5" pvc barrel to your valve
if you asking how to attach the air source to the valve and chamber so it automatically refills the chamber between shots you can:
use a flow controlled air input and valve like in these guns
http://www.spudfiles.com/forums/simple-semi-auto-paintball-rifle-t6109 .html
ball valves are not recommended to regulate flow
http://www.spudfiles.com/forums/true-semi-t156.html
that other hose and needle is just to help the sprinkler valve too close faster
or a 3way valve actuating/filling a Piston valve, QEV, or even a sprinkler valve with the spring removed
http://www.spudfiles.com/forums/revosemi-t7694.html
http://www.spudfiles.com/forums/semi-auto-t160.html
or even my gun only the 3way is a specially modded blow gun
http://www.spudfiles.com/forums/semi-blowgun-t6877.html |
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| myself |
| Posted: 09/11/2007 19:07 PM Post subject: |
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thanks, you answered all my questions perfectly.
but i have one more (sorry  ) what is the actual bolt? from what i can see its another piece of 3/4in pvc that locks into the shell. and whats the whole part about the 3/4x1" bushings? and do you have the actual lengths of the pipes?
thank you so much, o yea and i've been building pnuematic cannons for over 4 yrs. and i can honestly say this is the best one i've ever seen, you put all of my cannons to shame, so well done  |
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| iknowmy3tables |
| Posted: 09/14/2007 14:27 PM Post subject: |
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sorry i didn't get around to this post earlier the bolt is that sliding thing of 3/4"pvc that attaches to the cartridges, the measurements are all scaled in comparison to the cartridge length (its a scaled drawing) which you chose based on the ammo you want to use, and the cleaned out bushings are a way of sleeving over the bolt unless you want to do all the grinding work on the bolt to make it sleeve in 1"pvc, thank you for the complement but if you want to improve this design i recommend putting a tee input rater that a inline input and a qev or piston valve this will make it much shorter helping to deal with the abnormal length of my gun
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| Eddbot |
| Posted: 10/09/2007 18:24 PM Post subject: |
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Joined: 09 Oct 2007
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| hi, i'm kinda new to pneumatics and i was wondering what you use for an air source, a compressor? |
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| ilovetoblowthingsup |
| Posted: 10/09/2007 18:39 PM Post subject: |
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Joined: 30 Mar 2007
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Eddbot, are you kidding me. I'm sorry to get irritated at you, but there's a button at the top called the Wiki. Click on it and read all about pneumatics.
And yes, you can use an air compressor, for portable setups some ppl use a CO2 regulator hooked up to a CO2 tank.
Sorry for being irritated, but you could search, and I'm having a really, really, crappy day |
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| iknowmy3tables |
| Posted: 10/11/2007 20:13 PM Post subject: |
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Brigadier General
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| thats alright hes new thats his first post, welcome and yes it uses the air from a large air compressor. but reading spud wiki is a good idea if you what to learn all the basics |
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