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little piston-in-tee gun

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: hi » Wed Apr 18, 2007 6:13 pm

by the way, does anyone else know of a cheap good reliable ammo for 3/4 inch that isnt potatoes, marbles, or co2 cartages? i seem to run out kinda fast...
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Unread postAuthor: TwitchTheAussie » Wed Apr 18, 2007 6:45 pm

BB's rocks, nail darts :wink:
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Unread postAuthor: Pyro Ninja » Wed Apr 18, 2007 6:56 pm

Sorry about this but how do you connect the 1.25'' female x slip adapter to the Tee, Is there just a bit of 1.25'' pipe between the them
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Unread postAuthor: hi » Wed Apr 18, 2007 7:07 pm

Pyro Ninja wrote:Sorry about this but how do you connect the 1.25'' female x slip adapter to the Tee, Is there just a bit of 1.25'' pipe between the them


yes, thats exactly right, just about 3'' of 1.25'' pipe and glue it together.

EDIT- why, are you making one? if you do be sure to post it.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: Pyro Ninja » Wed Apr 18, 2007 7:22 pm

Cool, thanks heaps........I will be sure to post it if i make one..... :D
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Unread postAuthor: hi » Thu Apr 19, 2007 12:31 am

the only thing that i can suggest is that you install a bumper, i have a different valve on a larger cannon explode today because it didnt have a bumper.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: goose_man » Thu Apr 19, 2007 8:55 pm

Nice valve!
Just to let you know, if you sand the raised lines and writing off the 3/4" female adapter it fits exactly into a 1-1/4" x 1" flush bushing. Sanding/dremeling the stop in the bushing will allow you to insert and glue the adapter all the way into it, to make the whole valve much more compact. Maybe try it on the next one...
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Unread postAuthor: hi » Thu Apr 19, 2007 9:25 pm

ohh, thats a great idea, i was tring to figure out how to make it smaller. thanks alot, i think i may make a new one.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: integral » Fri Apr 20, 2007 6:02 am

ammo? have u tried tightly rolled newspaper bound with the miracle invention of duct tape? and to give it a extra kick, i always add four 2 inch steel nails :lol:
cheap, easy to make, fits snug and hits real hard.
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Unread postAuthor: hi » Fri Apr 27, 2007 1:31 am

i know this is starting to be a kinda old topic, but i think its worth sharing.

my brother recently got a paintball gun, so i asked if i could shoot a couple paintballs out of my cannon and he said ok. i took about 10 paintballs and shot them. at about 130 psi, 3 out of the 10 poped in the barrel. i guess it was the pressure. they are only made to be shot at 300 or 400 fps, and i was shooing it at a much higher rate, i was just wondering if anyone else had the problem of paintballs poping in the barrel.

edit- these paintballs that poped had already been shot at a hay bail, but showed no damage. im sure they were weakened a little, but i am still wondering if this has happended to any one else before.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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