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My first pneumatic.

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 first pneumatic.

Unread postAuthor: NatoHub » Thu Dec 06, 2007 4:55 pm

3/4" barrel (I might make more, since they screw on)
2" chamber
1" sprinkler valve
Pressure rated hose and blowgun valve
Presta valve with Schrader converter (had to buy at a bike shop)
Image
I don't think it's too terrible for my first pneumatic.
Telling me anything I screwed up on would be greatly appreciated.

Thanks
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Unread postAuthor: MaxuS » Thu Dec 06, 2007 4:59 pm

Yeah its a good start, you've got a massive pilot volume, much more than you need. Also, if you don't want to reduce the gap between the barrel and chamber, then you'll be needing a support to take the stress off of those elbows.
Good job. :D
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Unread postAuthor: NatoHub » Thu Dec 06, 2007 5:02 pm

Yeah, I'm planning on putting a support between the barrel and chamber. It's pretty damn wobbly without one.
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Unread postAuthor: Maniac » Thu Dec 06, 2007 5:04 pm

is that a clean out cap those are very dangerous on pnematic also cut down on the pilot volume a ton add barrel suports and damage pics also what are you pressurizing this at because if that is a cleanout dont pressurize it those usually arent pressure rated
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Unread postAuthor: BigJon » Thu Dec 06, 2007 5:04 pm

Nice gun for a first, but why didnt you just put an endcap on the 2" chamber? It looks like the plug you put on the end is DWV, but again nice first.
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Unread postAuthor: ShowNoMercy » Thu Dec 06, 2007 5:21 pm

Can I ask why you made your barrel so far off from the chamber?
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Unread postAuthor: daberno123 » Thu Dec 06, 2007 5:23 pm

reduce the distance between the tees for more support. Just use a cap instead of the cleanout. And how long is your barrel?
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Unread postAuthor: jackssmirkingrevenge » Thu Dec 06, 2007 5:36 pm

Shorten that hose and feel the difference!

Also, ShowNoMercy, excellent avatar :D bite the kerb!
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Unread postAuthor: NatoHub » Thu Dec 06, 2007 5:43 pm

Can I ask why you made your barrel so far off from the chamber?


I made it like that so that I can fire it with the barrel resting on my shoulder, with the chamber under my arm. I'll add something to support the barrel better.
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Unread postAuthor: ShowNoMercy » Thu Dec 06, 2007 5:45 pm

Makes a whole lot more sense put that way. You going to paint it? And how accurate is it?
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Unread postAuthor: NatoHub » Thu Dec 06, 2007 6:18 pm

I might paint it black...And I haven't got a chance to shoot it much yet. I've only shot a few batteries (and a glue stick, which just happened to fit perfectly) at a tree in my front yard. Seems pretty powerful. I think I'm gonna go to the soccer field tomorrow and see if it's accurate.

Thanks
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Last edited by NatoHub on Wed Jul 30, 2008 1:10 pm, edited 1 time in total.

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Unread postAuthor: Novacastrian » Thu Dec 06, 2007 8:52 pm

Hey Nato, nice first effort. What kind of damage does it produce?
I could picture JSR squirming in his seat as he took in, then in, then in that longish pilot hose :lol:
Welcome to spudfiles mate :D
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Unread postAuthor: Hubb » Thu Dec 06, 2007 9:04 pm

I bet that thing is fun to shoot.

The only thing I would suggest (besides dropping the cleanout) would be to add a barrel support. Also, for more comfort, have you considered mounting the blowgun?
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Unread postAuthor: jackssmirkingrevenge » Fri Dec 07, 2007 12:00 am

Novacastrian wrote:I could picture JSR squirming in his seat as he took in, then in, then in that longish pilot hose :lol:


I'm glad to note however that I seem to have drummed it into people's heads enough for them to comment about it too :D
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