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 Post Posted: Mon Jul 07, 2003 3:00 pm 
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Originaly posted by paintball__,
My friend and I are making my gun desingn at

http://devinexecution.com/airpower/details.php?image_id=29&sessionid=766d002374b18596b9aa91ee9086bf10


and I need serious help regarding the guage installement. I do not know how to put the guage in safely so that it stays there at 100 psi. Where on the gun should it be placed (the end cap preferably), but is that safe, or will it just shoot out when the pressure gets too high. Please help me, I really want to get it finished today.


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 Post Posted: Mon Jul 07, 2003 3:00 pm 
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Originaly posted by boogieman,
i wouldnt put it on endcap, that would weaken it, and also may make it easy to smack the gauge on something. It looks good where it is, you may put it where there are 2 layers, such as where the chamber meets the fitting. Make sure to drill the hole the right size, and use a pipe tap to tap the threads, they are about $5 at a well stocked hardware store. While it is possible to install gauges and such without a tap, there is a higher possibility of a leak, or a weakened area.


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 Post Posted: Mon Jul 07, 2003 3:00 pm 
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Originaly posted by paintball__,


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 Post subject: Not a problem
 Post Posted: Mon Jul 07, 2003 3:00 pm 
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Originaly posted by mta,
You can install a gauge in the endcap if you want to. Just use the appropriate drill bit and tap for the 1/8" or 1/4" NPT from the gauge.

The best place imo is at a pvc weld where the plastic is twice as thick. Use plenty of teflon tape.

I have drilled and tapped holes of 1/8" 1/4" and 3/8" in plastic endcaps and they hold just fine up to 150 psi if you do it right and use teflon tape.


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 Post Posted: Mon Jul 07, 2003 3:00 pm 
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Originaly posted by paintball__,


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 Post subject: it makes pipe threads,
 Post Posted: Mon Jul 07, 2003 3:00 pm 
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Originaly posted by boogieman,
so you can screw in the pressure gauge.


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 Post subject: Thanks
 Post Posted: Mon Jul 07, 2003 6:00 pm 
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Originaly posted by paintball__,
Ok I solved my problem


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 Post subject: Attaching air gauge...
 Post Posted: Tue Jul 08, 2003 6:00 am 
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Originaly posted by IzzyDoesIt,
Although I drilled/tapped my first air chamber at the cap (on the side, not on the end), I now use a different method.
I use a steel nipple attached directly to the air chamber and tap 3 holes, one for the schrader valve (1/8" NPT), one for the air gauge (1/4" NPT), and one for the pop-off valve (1/4" NPT).
When you buy your tap, make sure it is NPT (National Pipe Thread).
I don't really know if it is safer, but it makes me feel better. Another benefit when using this method is that the whole assembly can be moved from launcher to launcher.
I.D.I.


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 Post subject: elbow
 Post Posted: Tue Jul 08, 2003 7:00 am 
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Originaly posted by mta,
I'd stay away from drilling holes in an elbow or any other fitting. The fittings are the weak link. But a hole where the fitting is welded to the pipe, i.e. where the plastic is twice as thick.. that I think would work fine.


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 Post subject: yes
 Post Posted: Tue Jul 08, 2003 10:00 pm 
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Originaly posted by ryno,
i was stupid enough to put my pressure gauge in a wye and dev;oped cracks. i always drill holes for the gauge and shrader valve where the pvc is double layered


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