kind of paintball gun... Updated! v2

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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stereohead
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Hey guys,

I've some ideas for a diy paintball gun, i've never done something like this before, so can you people check it?

A picture says more than 10^10 words, so check my attachment below.

Darker blue = Higher Presure

Grts Roel


/edit:
v2 is on the bottom of this page
Attachments
paintball_gun.gif
paintball_gun.gif (32.63 KiB) Viewed 4712 times
Last edited by stereohead on Thu Feb 14, 2008 1:45 am, edited 3 times in total.
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thespeedycicada
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it might work but i think the air will just slowly leak out without cycling the valve.
jsr has alot of experience with this phenomenon. :D
current projects: co-axial piston valve.Status DONE!
S.P.E.C.S update mk 1 construction begining in febuary all the maths for it are done plans are drawn up and parts are listed.
NEXT project:auto piston valve.
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Davidvaini
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the hard part will be getting the inner barrel/open port for your magazine or gravity feed to be centered properly but still be able to maintain the pressure...

I also would think that the release of the pressure wouldn't be so quick and would slowly leak
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stereohead
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@thespeedycicada

Tnx for your reply.

Near which valve do you thing the air wil leak out?
When the valve is in the middle, all gaps are covered...



(btw: who is jsr ? )

@Davidvaini
When i make the prototype, ik will make more gaps, so i think the air will release fast enough
Last edited by stereohead on Tue Feb 12, 2008 5:25 pm, edited 1 time in total.
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Davidvaini
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the air would leak at your gravity feed right before it fires... that is if im reading the diagram correctly...
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stereohead
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eeh im sorry but what is "gravity feed"

my english is a bit poor :oops:
fretmelter
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that is where your amo is comming from

like in paintball it is called a gravity feed hopper. and when it deos leak there then the amo will be forced up causing it to not load.

also if u have no trigger system it will cycle very fast

cycle: going through the firing sequence

and this is bad cuz then it wont load.
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thespeedycicada
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what i mean is it wont cycle it will just go Poofssssssssssssssssssssssssssssssssss until no more air is supplied.

@fretmelter if this actually does cycle i doubt it will be to fast and if that is a problem a blowgun instead of dirct link to the chamber is all that is needed.
current projects: co-axial piston valve.Status DONE!
S.P.E.C.S update mk 1 construction begining in febuary all the maths for it are done plans are drawn up and parts are listed.
NEXT project:auto piston valve.
fretmelter
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true, so he will have to make it very air tight.

also how much psi are u going to take it too.

and mey i ask why u have sooo many chambers?? it seems like the tube after the large chamber (where your air suply is) can be eliminated.
Last edited by fretmelter on Tue Feb 12, 2008 7:36 pm, edited 1 time in total.
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thespeedycicada
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Put a blowgun where the air resevoir is so you have control of how much air pressure gets in.
But as i said before i highly doubt it will cycle.
current projects: co-axial piston valve.Status DONE!
S.P.E.C.S update mk 1 construction begining in febuary all the maths for it are done plans are drawn up and parts are listed.
NEXT project:auto piston valve.
fretmelter
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ok ok ill leave it at that. First lets see it cycle then we can procrastinate.
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stereohead
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I didn't draw the trigger system, but i have plans for that. I think the left piston will not go back automaticly, but ik can make a handle or somthing for that.

@fretmelter i see the leak, ik will use one more o-ring to fix that.



Tnx for all your comments, i will try to make a prototype soon.
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stereohead
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Hey,

I made a new design. Which is - i hope - better then the prervious.
Less parts, so less work :)
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paintball_gun_2.gif
paintball_gun_2.gif (7.35 KiB) Viewed 4590 times
fretmelter
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what causes the red part to go back first?
Projects:
copper paintball gun
paintball gun from scratch
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stereohead
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The spring in the green part will push it back.
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