Full/Semi auto 27mm blowback bolt cannon. UPDATED new paint+

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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jhalek90
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Cannon Specs:

27mm
semi/full auto (select fire, kinda.)
Blow back breech
7 round detachable spring loaded magazine
Main Valve: 1'' sprinkler valve, piloted by a pop off valve.


Photo:
Image

How the bolt works:
Image


How i did the detent and hopup:
Image


VIDEO:
[youtube][/youtube]

NEW PAINT+trigger+magazine changes:
[youtube][/youtube]


Any Questions?
Last edited by jhalek90 on Thu Apr 21, 2011 1:09 pm, edited 2 times in total.
jackssmirkingrevenge wrote:I wonder... if you put flammable vapours inside a lady... could you get her to diesel?
POLAND_SPUD wrote:Anything is possible with the proper 3-way valve.
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Gun Freak
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LOL bipod falls off...
That is really cool. It could use a redesign to make it prettier but as long as it functions! Good job. :)
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warhead052
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Nice job. How did you get it to blow back?
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jhalek90
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yeah i forgot the bipod screw. lol.

Blow back is now explained via a picture in the original post.
jackssmirkingrevenge wrote:I wonder... if you put flammable vapours inside a lady... could you get her to diesel?
POLAND_SPUD wrote:Anything is possible with the proper 3-way valve.
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warhead052
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Ok. Thanks! Yet again nice job on the gun. I would love to have one...
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JDP12
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Wow.. very impressive! INcredibly simple design.. followin the KISS principle I like it! Nice job
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ramses
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Nice.

You know... If you used a 3 way valve for the trigger, you would have true semi auto.

And an air cylinder would make it cycle (better?). And if you hooked it up to a fridge compressor...

[/polandspud joke]

What are you using for your magazine spring? is the magazine sealed from atmosphere?
POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
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jhalek90
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ty. in the spirit of KISS during prototyping, the breech was held together with tape. lol

It exploded several times. very fun. After i got it working, i glued everything down. No more explosions.
jackssmirkingrevenge wrote:I wonder... if you put flammable vapours inside a lady... could you get her to diesel?
POLAND_SPUD wrote:Anything is possible with the proper 3-way valve.
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jackssmirkingrevenge
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lol @ the detent, love it :) very nice overall, needs some tweaking but kudos on ghettting see what I did there it to work, brilliant!
ramses wrote:What are you using for your magazine spring?
Looks like a rubber band :D
hectmarr wrote:You have to make many weapons, because this field is long and short life
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POLAND_SPUD
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Nice

If you used a 3 way valve for the trigger, you would have true semi auto.

And an air cylinder would make it cycle better. And if you hooked it up to a fridge compressor...
Children are the future

unless we stop them now
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jackssmirkingrevenge
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POLAND_SPUD wrote:Nice
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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ThornsofTime
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@JSR Hey... its a valid button... But you seem to have forgotten to "program" a standard "epoxy advice" button...
^(O_o)> Hi there
>(O_o)># I made you this waffle!
>(O_o)># then I remembered you were a dick.
(>#<) So I ate it.
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jackssmirkingrevenge
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ThornsofTime wrote:@JSR Hey... its a valid button... But you seem to have forgotten to "program" a standard "epoxy advice" button...
Fine, in the interest of balance:
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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POLAND_SPUD
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you forgot about random innuendo and APFSDS rounds are so fuc#### awesome (let me post another pic of them) buttons :wink:

anyway you're just jealous...
you could have realized that 3 way valves are the way to go...
and now you're like 'uhhhh......... 3 way valves $#$#$'

...retards
JK

:D

[/offtopic]
I am surprised that it works so well... hmm
Children are the future

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jackssmirkingrevenge
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POLAND_SPUD wrote:APFSDS rounds are so fuc#### awesome (let me post another pic of them)
:laughing6:
hectmarr wrote:You have to make many weapons, because this field is long and short life
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