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What I have right now?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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What I have right now?

Unread postAuthor: sniperx117 » Tue Aug 28, 2007 9:34 pm

What I have right now:

Image

Image

Image

But it leaks like crazy. Everytime I try to pump it, it leaks. So should i just buy a long 1" diameter pipe and ebd cap? Or use teflon tape to close all the leaks? I already tried plugging up all the holes with hot glue. No use.

So now what?
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Unread postAuthor: Flying_Salt » Tue Aug 28, 2007 9:39 pm

Use teflon tape. It should pretty much always be used when screwing things together on a pneumatic.
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Unread postAuthor: Redcoat » Tue Aug 28, 2007 9:40 pm

no, hot glue would not work, what i suggest you do is unscrew it all and use teflon tape to seal the threads also don't take it up to a high psi first time start low and work up.I've learnt from expierience. :wink: .

I hope it works out for you it looks nice. :wink:

Happy SPuddin'
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Unread postAuthor: Flying_Salt » Tue Aug 28, 2007 9:45 pm

Oh and I just noticed, you can make your barrel a lot longer, a few feet, unless you're shooting nets or grapeshot or something.
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Unread postAuthor: noob of noobs » Wed Aug 29, 2007 5:30 pm

Definitely use teflon pipe tape. I agree with Flying_Salt, you should make the barrel longer. I'd also suggest getting a better valve.
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Unread postAuthor: potatoflinger » Wed Aug 29, 2007 5:38 pm

Redcoat wrote:no, hot glue would not work, what i suggest you do is unscrew it all and use teflon tape to seal the threads also don't take it up to a high psi first time start low and work up.I've learnt from expierience. :wink: .

I hope it works out for you it looks nice. :wink:

Happy SPuddin'

Mind if I ask what happened?
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Unread postAuthor: Orpackrat » Wed Aug 29, 2007 5:39 pm

Wrap the threads nice and heavy with Teflon tape and make sure the fittings are tight. That will fix the leaks.
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Unread postAuthor: Rudesill Ballistics » Thu Aug 30, 2007 12:41 am

Metal tends to like to leak even with Teflon Tape, don't just wrap a few turns, go all out, make that sucker puffy. You want every gap in those threads sealed.

If all else fails, buy some Plumber's Goop.
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Unread postAuthor: Novacastrian » Thu Aug 30, 2007 1:33 am

Or you could just weld it all up! :twisted:
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Unread postAuthor: TwitchTheAussie » Thu Aug 30, 2007 1:38 am

Welding works quite well if you dont want to open it. Use a mig or tig welder if ya know how to use them.
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Unread postAuthor: Hubb » Thu Aug 30, 2007 5:21 am

Don't weld. The galvanized pipe does not take too kindly to welding. Either use a lot of teflon (a lot!), or use some thread sealant (the blue stuff works the best) or you could always put JB Weld or some other type of epoxy on the threads then allow it to cure.
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Unread postAuthor: Orpackrat » Thu Aug 30, 2007 12:03 pm

You will know you have enough Teflon tape on the threads when the thread ridges are barely visible on the Teflon tape.
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Unread postAuthor: sniperx117 » Fri Aug 31, 2007 10:28 pm

Ok. Teflon it is.


I did it. All wraped up no leaks. It pumps and holds air!

but the problem: I pump the crap out of it then it launches whatver i want and goes 2 feet. The air pump dont be able to put enough pressure there for crap. how do I fix this? Air compressor?

HELL NO! The cheapest 1 I ve ever found was like 100 bucks.

Plus i dont want to lug it around on a paintball feild.
\
Co2 looks like a must. Nut how? I need a steel hose, asa, and 1/8 connector. but thats gona cost me.

CRAP! :shock: :evil: :?:
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Unread postAuthor: Redcoat » Fri Aug 31, 2007 10:59 pm

potatoflinger wrote:
Redcoat wrote:no, hot glue would not work, what i suggest you do is unscrew it all and use teflon tape to seal the threads also don't take it up to a high psi first time start low and work up.I've learnt from expierience. :wink: .

I hope it works out for you it looks nice. :wink:

Happy SPuddin'

Mind if I ask what happened?


yes, yes you can. When i made my first ever pneumatic gun which was a BBMG (had it's own chamber) i decided to pump it up to 90 psi straight away.
When i got up there it started to leak like hell and then it cracked around where the blowgun and schrader were.I then had to replace that endcap. :cry:

So now i work it up slowly.
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Unread postAuthor: noname » Sat Sep 01, 2007 12:09 am

As long as you have properly tapped (or factory cut) threads on fittings, you're fine taking the gun to hundreds of psi, straight off.
Redcoat, you probably had crappy threads or a crappy end cap.
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