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My New 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 New Pneumatic

Unread postAuthor: repoman » Sat May 19, 2007 8:55 am

Alright, I wouldn't call this one my first cannon, but close. I made the obligatory giant ugly hairspray cannon about a year ago. Fun but unreliable. Stumbled onto this website, still not sure if that is a good or bad thing :)

I made kind of a test pneumatic just to make sure the modded sprinkler valve worked. Just seemed to easy to be so effective. Anyway, after I made that one I started on this one. I've got no imagination at all, so there is a good chance I copied this design from someone without realizing it. If it was you, let me know and I'll credit you.

It's got a 32" chamber of 1", a 36" barrel of .5", and a 1" modded sprinkler valve.

I need to find a way to rigid mount the red dot scope once I make sure it's close. I'm thinking some good ole JB Weld unless someone has a better suggestion. And before you say it, I know the schrader isn't in the best place. I'm having trouble finding the threaded type. Everyone seems to be out of them here. And I'm leaving the solenoid on in case I need to remote fire it for some reason.

But running it right around 100psi and using some wadded marbles, and bits of 5/8" dowel. Fired it off a little last night but it was too late to really see a whole lot, but I was impressed with the speed of the marbles. GGDT says it should be firing right around 500ft/s. Hope to get out during the day for some damage pics and to get that sight dialed in.

Image

Image

p.s. The cat is in no danger..........yet ;)

edit: should have known better....its all PVC and all pressure rated parts....just painted
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Last edited by repoman on Sat May 19, 2007 2:05 pm, edited 2 times in total.

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Unread postAuthor: super spuder » Sat May 19, 2007 9:15 am

haha, that is a funny cat, why is it lying next to the barrel. Anyways nice gun, is that handle thing a blow valve? looks like you will have some fun with it. it shoots marbles right? i want to make a marble rifle some day. Last question, is it made of ABS pipe? I wont bug you if it is, other people will thou :lol:
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trying to decide on a new project, probably something small.
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Unread postAuthor: TwitchTheAussie » Sat May 19, 2007 9:19 am

Lol I really dont mind your gun mate but that cat is so cute :lol: . Ahem on task now :P Nice pneumatic dont worry bout the design half of what people make is a copy of sorts...except mine. Mine are too ghetto but anyway. Nice cannon and keep up the good work mate :P
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Unread postAuthor: repoman » Sat May 19, 2007 9:36 am

It's all PVC, think the sprikler valve is going to be the weakest link.

Shooting marbles, bits of 5/8" dowel and other random objects that fit in there.

And thats a blow gun I got at home depot. I was a bit worried about the flow, but it works just fine.

The cat, well she's "special" and a bit nosy. She looks like she likes the cannon though. Maybe I can make a low powered cat toy cannon to shoot across my place so they have something to chase.
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Unread postAuthor: jackssmirkingrevenge » Sat May 19, 2007 9:43 am

A word of advice, had you joined the sprinkler valve between the elbow and the barrel you would have saved on some dead space between the valve and the projectile and improved performance.
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Unread postAuthor: spud yeti » Sat May 19, 2007 10:09 am

Hey, nice for one of your first cannons. I like the whole neat and proper look, especially the black sprayjob 8) . Hehe, wish my cat was that friendly lookig, mine is savage! :cry: my artwork doesnt like it either! my cat+art = shreds!
I think im going off topic, so to stay on, I wish South Africa sold blow guns, if anyone knows where I can get one, please personal mail me!!!
Anyways, nice work and keep building!
How far does it shoot +-?
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Unread postAuthor: repoman » Sat May 19, 2007 10:21 am

Thanks for the encouragement people.

And thanks Jack for the input. I knew that when I built it. I haven't really seen or thought of a way to mount the blowgun anywhere else that I can do and be happy with. I have very limited tools and that was done for the sake of simplicity and....well laziness I guess.

I like the basic set up and the way the barrel is supported, but if I could get that sprinkler valve up top and move the blowgun to about where the gauge is I'd be really happy. I'll just have to figure out how to do it with my limited skills, tools, knowledge, and keep it fairly cheap.
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Unread postAuthor: jackssmirkingrevenge » Sat May 19, 2007 10:35 am

I like the basic set up and the way the barrel is supported, but if I could get that sprinkler valve up top and move the blowgun to about where the gauge is I'd be really happy. I'll just have to figure out how to do it with my limited skills, tools, knowledge, and keep it fairly cheap.


Here's a suggestion, excuse the shitty image editing but I'm not in the mood :P
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Unread postAuthor: spud yeti » Sat May 19, 2007 11:08 am

Haha, kitty in distress! that idea would work though, so you should consider it repoman
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Unread postAuthor: repoman » Sat May 19, 2007 11:19 am

That was one of my original thoughts, but I know in the long run I won't be happy with just zip ties.

Image

That is what I was thinking about. Maybe bore out the tee so it slides over the chamber and try to jam a smaller blowgun into a piece of 1" hanging down. Shouldn't be too tough....maybe
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Unread postAuthor: spud yeti » Mon May 21, 2007 6:42 am

mmm, should be good! :lol: just work carefully as always and the results should pay off.
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