My first piston cannon. With damage vid.

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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Gippeto
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Sun Jan 20, 2008 5:25 pm

Finished this a couple weeks ago. It works WAY better than I expected it to.
Thanks for providing such a complete source of information all in one place.

Specs,

All pipe is 1 1/4" sch 40 pvc with a pressure rating of 370psi
All fittings are sch 40 pvc pressure rated (to what?)

barrel 36"
chamber 48" approx.
piston is a 1 1/2" end cap faced off and bored to fit over the 1 1/4" fittings.
Bumper is a buna o-ring
sealing face is neoprene diaghragm material


Thanks, for looking, let me know what you think.

Edit for spelling/ trying to add pics and video


Attachments
damage to marshmallows
damage to marshmallows
valve complete and closed
valve complete and closed
valve internals
valve internals
The complete cannon
The complete cannon
Can filled with water and shot @ 90psi<br />http://www.youtube.com/watch?v=miHGvreCPwA
Can filled with water and shot @ 90psi
http://www.youtube.com/watch?v=miHGvreCPwA
Worked up a new projectile. Will put up a vid when I shoot it. Hopefully this weekend.
Worked up a new projectile. Will put up a vid when I shoot it. Hopefully this weekend.
Barrel sealer w/ light weight piston.
Barrel sealer w/ light weight piston.
Last edited by Gippeto on Thu Feb 07, 2008 1:20 am, edited 9 times in total.
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psycix
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Sun Jan 20, 2008 5:35 pm

It looks good!
What pressure did you take it up to? And did you use more damaging ammo then just marshmellows?
Also, could we have damage pics or even a vid?

Its a nice cannon, and I wish you a long happy spudding time with it. :)
Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
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elitesniper
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Sun Jan 20, 2008 5:41 pm

interesting design , looks good you should cut off some barrel and add a threaded coupler so you can change to differnt barrel sizes
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pizlo
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Sun Jan 20, 2008 5:42 pm

Very nice design, I like guns that start to look and get held like real guns.
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jrrdw
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Sun Jan 20, 2008 6:59 pm

I can just hear that marshmellow hitting with a splat. Does it stickum to the wall? Nicely done!
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Gippeto
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Sun Jan 20, 2008 11:40 pm

Hey, Thanks!

Psycix - I shoot at 90 psi (I fill with a regulator). It is currently -23 C here, this means indoor testing and non penetrating types of ammo. (the boss would be PISSED if I shot a hole in the wall) :shock: I'll see about a vid in the next couple days.

Elite - A golf ball barrel might be cool for spring.

jrrdw - It hits pretty hard, I sure wouldn't want to be down range. Disappointingly, they only stick occasionally. :(
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