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the HELIX naval cannon.UPDATE:more damage pics!
Posted: Sun Jan 20, 2008 3:42 pm
by thespeedycicada
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.
more damage coming soon!
Posted: Sun Jan 20, 2008 3:48 pm
by Maniac
Nice.
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
Posted: Sun Jan 20, 2008 3:49 pm
by SpudUke5
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.
Posted: Sun Jan 20, 2008 3:51 pm
by thespeedycicada
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?
Posted: Sun Jan 20, 2008 3:53 pm
by kablooie
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.
Posted: Sun Jan 20, 2008 4:01 pm
by potatoflinger
Great looking gun, I like it a lot!
Posted: Sun Jan 20, 2008 4:09 pm
by psycix
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.
Posted: Sun Jan 20, 2008 4:37 pm
by thespeedycicada
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.
Posted: Sun Jan 20, 2008 5:27 pm
by mark.f
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.
I've thought about building a pressure rated pneumatic and sleeving it in a DWV "shell" before just to see what people would say.
Posted: Sun Jan 20, 2008 5:34 pm
by OuchProgramme
Haha. Sights are funny.
Well..if they work than they're fine.
Posted: Sun Jan 20, 2008 5:44 pm
by pizlo
So would a 1.5 in coax be as powerful and a barrel or chamber sealing?
Posted: Mon Jan 21, 2008 11:46 am
by psycix
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.
Posted: Mon Jan 21, 2008 4:14 pm
by thespeedycicada
more damage! all was done at 5.5, 6, and 9 ft
Posted: Mon Jan 21, 2008 8:27 pm
by A a r o n
Looks awesome. Where did you get the neoprene washer?
Posted: Mon Jan 21, 2008 9:23 pm
by Maniac
nice man can i expect to see a vid soon. If not pictures are still great.