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First Sprinkler 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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Unread postAuthor: Novacastrian » Fri Nov 23, 2007 6:52 pm

Looks like a sweet cannon Trooper, do you know the capacity of your chamber? I ask because i think my next project will involve a sprinkler valve and look somewhat like your cannon. :wink:
Nice job, any chance of damage pics?
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Unread postAuthor: mopherman » Fri Nov 23, 2007 6:54 pm

Novacastrian wrote:Looks like a sweet cannon Trooper, do you know the capacity of your chamber? I ask because i think my next project will involve a sprinkler valve and look somewhat like you cannon. :wink:
Nice job, any chance of damage pics?

wowowowow, hold on a minute. You have the facilities to machine one of the best pistons on the site, but your going to use a SPRINKLER?? meh whatever you want man :roll:
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Unread postAuthor: Novacastrian » Fri Nov 23, 2007 7:01 pm

mopherman wrote:
Novacastrian wrote:Looks like a sweet cannon Trooper, do you know the capacity of your chamber? I ask because i think my next project will involve a sprinkler valve and look somewhat like you cannon. :wink:
Nice job, any chance of damage pics?

wowowowow, hold on a minute. You have the facilities to machine one of the best pistons on the site, but your going to use a SPRINKLER?? meh whatever you want man :roll:


Yes that is correct, i only realised the other day that i had not completed a PVC build, EVER. (came close but blew the end off my chamber)
How much more power will i be able to obtain with a piston? I just wanted to make a gun the way everyone else seems to make them to be able to appriceate the power of "normal" spuddy, (please don't flame me for saying "normal"). In other words i wanted to build a cannon without the use of my lathe! :D

Edit: I just realised you complemented my piston, Cheers :P
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Unread postAuthor: mopherman » Fri Nov 23, 2007 7:05 pm

the performance increase depends on the bore size. with a 1/5 barrel, you will get at least a 50% velocity increase with a piston over your garden variety sprinkler.(pulling numbers outa my ass here)
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Unread postAuthor: TheTrooper » Fri Nov 23, 2007 9:03 pm

Yeah sure ill post some damage pictures in this response just got to go get my camera be right back.
Okay, here they are!:Image
Image
Image
This cannon is a beast compared to my ball valves! :twisted:

Oh and answering your question
Novacastrian wrote:Looks like a sweet cannon Trooper, do you know the capacity of your chamber? I ask because i think my next project will involve a sprinkler valve and look somewhat like your cannon. :wink:
Nice job, any chance of damage pics?

My Chamber is pi*0.75*0.75*15=26.5 cubic inches
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Unread postAuthor: The Reinforcement » Fri Nov 23, 2007 11:40 pm

it was awsome when it fired and i was there
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Unread postAuthor: TheTrooper » Fri Nov 23, 2007 11:59 pm

Firing paintballs from it was probably the best ammo, you can fire it at walls and such but it will not damage or dent them only leave a nice mark. A good way to test accuracy if you need to. Anyone else shoot some fun things out of 3/4" barrel?
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Unread postAuthor: Maniac » Sat Nov 24, 2007 12:05 am

shoot some batteries wrapper in a little duct tape
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Unread postAuthor: TheTrooper » Sat Nov 24, 2007 12:21 am

Umm, i always have thought that shooting batteries that contain acid is a bad idea. Won't the acid explode everywhere when the battery hits something like plywood? Also, is Penetrating 1/4" plywood on your first spinkler pneumatic something impressive?
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Unread postAuthor: frankrede » Sat Nov 24, 2007 12:54 am

I have never had a battery explode.
But shooting empty co2s are really fun
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Unread postAuthor: TheTrooper » Sat Nov 24, 2007 1:00 am

Darn if only i had a couple co2's, i think i used to have a couple from a science project but i'm not sure where they are now
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Unread postAuthor: Pilgrimman » Sat Nov 24, 2007 1:54 am

Anyone else shoot some fun things out of 3/4" barrel?


I shoot glue sticks. The kind I have fit unbelievably, likely within a hundredth of an inch, but still will fall down the barrel. It took 7 seconds for it to fall down a 4 foot barrel, the fit is that good!
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Unread postAuthor: TheTrooper » Sat Nov 24, 2007 2:02 am

Wow, now that is a smooth and tight fit!
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Unread postAuthor: Novacastrian » Sat Nov 24, 2007 2:54 am

Thats not "bad" damage, i had expected more though. I'm sorry if i missed it but what psi do you fire at?
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Unread postAuthor: TheTrooper » Sat Nov 24, 2007 3:02 am

Well i'm not sure what else to shoot at. Also my barrel needs to be 2 times longer for a 1:1 ratio right now its at 2:1, chamber:barrel. I ran out of PVC. (only 90 psi)
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Last edited by TheTrooper on Sat Nov 24, 2007 3:04 am, edited 1 time in total.
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