First Sprinkler Pneumatic

[Novacastrian]

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.
Nice job, any chance of damage pics?

[mopherman]

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.
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

[Novacastrian]

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.
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

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!

Edit: I just realised you complemented my piston, Cheers

[mopherman]

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)

[TheTrooper]

Yeah sure ill post some damage pictures in this response just got to go get my camera be right back.
Okay, here they are!:


This cannon is a beast compared to my ball valves!

Oh and answering your question

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.
Nice job, any chance of damage pics?

My Chamber is pi*0.75*0.75*15=26.5 cubic inches

[The Reinforcement]

it was awsome when it fired and i was there

[TheTrooper]

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?

[Maniac]

shoot some batteries wrapper in a little duct tape

[TheTrooper]

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?

[frankrede]

I have never had a battery explode.
But shooting empty co2s are really fun

[TheTrooper]

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

[Pilgrimman]

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!

[TheTrooper]

Wow, now that is a smooth and tight fit!

[Novacastrian]

Thats not "bad" damage, i had expected more though. I'm sorry if i missed it but what psi do you fire at?

[TheTrooper]

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)