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My First Pneumatic (Help Me) (With Pictures)

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: mopherman » Thu May 10, 2007 7:06 pm

wouldnt 3 footy feilds be like, 900yds? i can suply a shopping list for an easy,under over sprinkler gun if you like. or something with a little more bulk?
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Unread postAuthor: hotrocks » Thu May 10, 2007 7:07 pm

(900 feet)


ok i dont know what a lot of those terms are...right now im going for the one that i saw in that link (http://www.spudfiles.com/forums/a-true- ... t8073.html)...is that okay?

i got the

80 inches of 4 inch Schedual 40 NSF-PW PVC Pipe (pressure rated)
72 inches of 3 inch PVC (for barrel)
2 inch pvc ball valve

but what about end caps and primers and glue and stuff...like literally what do i need...include everything
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Unread postAuthor: pyromaniac » Thu May 10, 2007 7:11 pm

I gave you a list for that one. o ya i forgot 2 3 inch end caps. There sould be primer and cement called oatys in yoru plumbing section at home depot. get the second smallest one.

ill mkae a new list

4 inch pvc

3 inch pvc

3 inch elbows-2

3 inch encaps-2

3 inch t

3 inch to 2 inch reducer-2

2 inch fem adaptors-2

2 inch ball valve.

2 inch coupling

primer

cement.
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Unread postAuthor: hotrocks » Thu May 10, 2007 7:13 pm

so is the 3 inch the barrel....or the chamber..it seems like its the chamber but i thought the barrel was 3 inches
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Unread postAuthor: pyromaniac » Thu May 10, 2007 7:14 pm

barrel is 3 inch chamber is 4 inch.
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Unread postAuthor: hotrocks » Thu May 10, 2007 7:16 pm

but since the barell is only connected to the valve, why is there all this stuff for the 4 inch chamber thats 3 inches
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Unread postAuthor: pyromaniac » Thu May 10, 2007 7:19 pm

o sorry i typed in alot of peices that should be 4 inch 3 inch leme fix that.

4 inch pvc

3 inch pvc

4 inch elbows-2

4 inch encaps-2

4 inch t

4 inch to 2 inch reducer

3 inch to 2 inch reducer

2 inch fem adaptors-2

2 inch ball valve.

2 inch coupling

primer

cement.
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Unread postAuthor: hotrocks » Thu May 10, 2007 7:23 pm

ooh close one lol

well thanks alot...ill try and pick these up over the weekend...ill probably post another thread with some pictures of what I think i should be doing (before i glue) too see if i am on the right path


thanks a bunch!
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Unread postAuthor: pyromaniac » Thu May 10, 2007 7:25 pm

NP i hope you get a good grade or whatever on your science, Id love to be able to have a spudgun for a science project.
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Unread postAuthor: jrrdw » Thu May 10, 2007 7:27 pm

Hotrocks, if your doing the building, you better at least go read the solvent welding how to. If you don't do it rite, your going to hurt yourself and someone else!
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Unread postAuthor: pyromaniac » Thu May 10, 2007 7:30 pm

http://burntlatke.com/weld.html

read this and don't solvent weld before you understand it.
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Unread postAuthor: super spuder » Thu May 10, 2007 7:32 pm

yea. if you hit the teacher with flying pieces of pipe. you might fail. :lol:
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trying to decide on a new project, probably something small.
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Unread postAuthor: hotrocks » Thu May 10, 2007 7:36 pm

yeah i read it...basically coat inside with primer (make sure you dont get the threads on the cans with primer) then do it again, then do it with cement, then put the pipes together and twist, then press for a minutes then let dry....and do it outside.....right?


Apply to both male and female parts avoiding contact with threaded areas. Mask the threads with tape if needed beforehand.

what threaded areas? on the pipes?
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Unread postAuthor: pyromaniac » Thu May 10, 2007 8:02 pm

if you have female threaded adaptors all you need is teflon tape. you dont need to solvent weld adaptors.
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Unread postAuthor: frankrede » Thu May 10, 2007 8:13 pm

a 2" pvc ball valve would have horrible performance.Like less than 100 ft
I would suggest a 2" sch 80 pvc union for burst disks for the best performance possible. Plus its cheap!(15$ at the high end 8$ at the low end)
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