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my piston cannon

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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my piston cannon

Unread postAuthor: Crna Legija » Wed Feb 10, 2010 7:27 am

i made this 2 months ago and never posted bored at home thought ill share it with yall. i made the piston on drill press lathe out of nylon its got a o-ring and schrader valve with spring changed it opens at 5 psi. i need pressure gage and then a frige pump. i all so filled up the pilot with epoxy and drilled small holes and piston travel limited to the d4 rule

specs:
valve: 3/4 inch barrel sealing piston valve
pilot: blowgun
barrel: 60cm of 22mm conduit and 170cm of 16mm steel pipe
chamber volume: 1000 cc
operating pressure: 20-350 psi


on with the pics
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Attachments
IMG_0028.JPG
this is the gun in its glory


ps the toes are for jsr
IMG_0029.JPG
close up of the stock i used a jig saw for the bulk and file and sand paper to finish up. i nice coat of stain it looks good and holds nice but the cheak holder is to high
IMG_0033.JPG
i made i kind of brake barrel breach this is closed
IMG_0034.JPG
this is the breach closed
ggdt1.jpg
this is what ggdt tells me im not sure if its corect idk what seat dia is or flow coef
Last edited by Crna Legija on Fri Aug 26, 2011 10:59 pm, edited 2 times in total.
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Crna Legija
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Unread postAuthor: Demon » Wed Feb 10, 2010 7:55 am

Do not care of the flow coef but the seat diameter is on what your piston "seats"

Thats some nice power !
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Unread postAuthor: Brian the brain » Wed Feb 10, 2010 5:09 pm

Very nice style you got there.
Finally we see another break barrel breech.
It's been a while.

You could do some more work on the wood though.It;s nice as it is, but if you round off everything so there are NO more flat surfaces, it will look even better.
Right now it's a bit blocky still.But as I said, it's nice as it is.

Make that VERY nice!

Keep up the good work!
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: Patto » Wed Feb 10, 2010 5:40 pm

looks good man i really like your stock !!

what are you using as ammo ?
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Unread postAuthor: Crna Legija » Wed Feb 10, 2010 6:56 pm

thanks for the kind words everyone

@btb
as for the stock i was going for a kind of sako trg-42 type stock for a hammer valve gun i made but it was week at 150 psi so i cut it in half and put it on this

@auspatto
for ammo i use 22mm bbs i got a crap tonne from my dads work and what every els fits in good. all so have made a couple darts
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'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
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