the HELIX naval cannon.UPDATE:more damage pics!

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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thespeedycicada
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this is my new piston gun.Its called a "naval" gun becase it kinda reminds me of a gun that would be mounted on a battleship.

The piston is a 1 inch cap slightly sanded down and has a neoprene washer for a sealing face and it works perectly.

The camber is 1.5 inch sch 40 pvc with a 1.5 inch ballvalve for a pilot and it usees a shcrader as a fill valve.

Barrel is 1/2 inch pvc and ther is an old rag as a bumber.

Tis gun has power! and seals perfectly! the only thing to complain about is that the bumber comes put some times but oh well. :roll:

more damage coming soon!
Attachments
DAMAGE! from 5 ft 60 psi.
DAMAGE! from 5 ft 60 psi.
P1010210.JPG (26.94 KiB) Viewed 5715 times
the sights.
the sights.
P1010203.JPG (22.16 KiB) Viewed 5715 times
barrel and bushings...
barrel and bushings...
P1010205.JPG (25.81 KiB) Viewed 5715 times
pilot/fillvalve.
pilot/fillvalve.
P1010200.JPG (26.7 KiB) Viewed 5715 times
piston sealing face.
piston sealing face.
P1010196.JPG (23.05 KiB) Viewed 5715 times
piston
piston
P1010195.JPG (21.49 KiB) Viewed 5715 times
the gun.
the gun.
P1010199.JPG (25.26 KiB) Viewed 5715 times
Last edited by thespeedycicada on Mon Jan 21, 2008 4:17 pm, edited 1 time in total.
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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Maniac
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Nice. :D :D It reminds me of something on a battle ship too.
what are those sights actually made of and can i expect to see any damage pics soon.


p.s. arent those angled tees (i think there called wye tees) DWV

edit im so stupid you all ready have damage pics. what are you shooting out of this
Last edited by Maniac on Sun Jan 20, 2008 3:49 pm, edited 1 time in total.
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SpudUke5
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Looks very nice. And it reminds me more of a harpoon gun.

ne way, i dont know if i have ever seen a pressure rated y, if it isnt or isnt.
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thespeedycicada
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idk what the sights are but they work oh and the dwv is fine its just to direct pilot exhaust so there is never any pressure on it.
And there is damage pics so you mean MORE pics right?
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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kablooie
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wow, very nice cannon. I like how simple it looks on the outside and it's still extremely powerful. Great job, although if that Y is dwv then that could be a problem.
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potatoflinger
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Great looking gun, I like it a lot!
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psycix
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Looks nice yes.

@ the guys above concerning the Y

Isnt the Y unpressurized and just open to the air?
Like being some sort of stock?

Im not of that sure but just a thought.
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thespeedycicada
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Yup ur right psycix its just a stock so i can aim it better it also helps direct the pilot airflow away from my face. :wink:
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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Looks good. That's the first pilot assembly I've seen like that. Extremely simple, but how stiff is the ball valve?

Also, I think you put that Y on there just to see peoples reactions. :wink: I've thought about building a pressure rated pneumatic and sleeving it in a DWV "shell" before just to see what people would say.
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OuchProgramme
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Haha. Sights are funny.

Well..if they work than they're fine.
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pizlo
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So would a 1.5 in coax be as powerful and a barrel or chamber sealing?
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psycix
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Yes
A coax will be as powerful as any other barrel-sealer in the same dimensions.
Im not sure about chamber sealers but the difference isnt that big.
Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

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thespeedycicada
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more damage! all was done at 5.5, 6, and 9 ft
Attachments
the setup.
the setup.
P1010218.JPG (25.83 KiB) Viewed 5554 times
entrance
entrance
P1010213.JPG (36.04 KiB) Viewed 5554 times
exit
exit
P1010214.JPG (35.54 KiB) Viewed 5554 times
phone book,6 feet 90 psi.
phone book,6 feet 90 psi.
P1010211.JPG (37.1 KiB) Viewed 5554 times
full can,5.5 ft, 80 psi Ammo: wood dowel.
full can,5.5 ft, 80 psi Ammo: wood dowel.
P1010210.JPG (37.99 KiB) Viewed 5554 times
full can, 5.5 ft, 80 psi ammo:nail
full can, 5.5 ft, 80 psi ammo:nail
P1010209.JPG (30.56 KiB) Viewed 5554 times
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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A a r o n
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Looks awesome. Where did you get the neoprene washer?
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Maniac
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nice man can i expect to see a vid soon. If not pictures are still great.
Coodude26 wrote:
People who laugh really hard at stuff that pisses you off/you getting hurt, who then say "I'm sorry, I can't stop" but you know they easily could.

Mr.C: That's not as easy as you think. It's like me kicking you in the balls and telling you to stop crying.
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