8 ft long pneumatic spud launcher

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msg72391
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Tue Oct 04, 2005 7:39 pm

This spud launcher shoots fast and far but runs on low pressures such as 25 psi. I shot a rubber ball ou of sight into the sky, no exaggeration.
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3 inch:2 inch converter to make the gun shoot faster and farther.
3 inch:2 inch converter to make the gun shoot faster and farther.
Shraeder Valve (For Filling)
Shraeder Valve (For Filling)
Ball Valve (trigger)
Ball Valve (trigger)
My Huge Spud Launcher
My Huge Spud Launcher
smoch125
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Tue Oct 04, 2005 7:44 pm

this thing is pretty sweet, how long is the three in segment. the 2in??
msg72391
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Tue Oct 04, 2005 8:02 pm

the 2 in segment is 4 ft long
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drac
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Wed Oct 05, 2005 5:40 am

Holy cow, that thing is monstrous. What's the red gunk all eover the fittings? Primer, or epoxy?
msg72391
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Wed Oct 05, 2005 8:38 am

epoxy is the red,orange gunk that keeps it air tight when it is on the outside, it fills in any gaps.
msg72391
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Wed Oct 05, 2005 8:43 am

the 3 inch segment is 3 ft long
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PCGUY
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Wed Oct 05, 2005 8:50 am

msg there is an edit button so you don't have to double post 8)

You say that's primer and stuff that keeps the cannon air tight? Are you using this becuase you didn't correctelly use primer and cement on the cannon? If so I woulden't get ANYWHERE near that cannon it's just waiting to blow apart.
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msg72391
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Wed Oct 05, 2005 8:57 am

I did use primer and cement properly but just be extra safe i put some epoxy on the outside. Sorry I did not describe my previous post well enough.
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PCGUY
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Wed Oct 05, 2005 9:06 am

Oh then your fine, I was worried :wink:
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spudshot
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Wed Oct 05, 2005 1:30 pm

looks good, i'd replace the DWV reducer and tee though, and the schrader valve should be tapped thru 2 layers of PVC (where the fitting overlaps the pipe) all in all, good job, next you should try a homemade valve or a sprinkler
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msg72391
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Wed Oct 05, 2005 1:34 pm

thank you for the compliment and suggestions
msg72391
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Wed Oct 05, 2005 7:58 pm

I just filled the above cannon to forty psi, is 40 psi too much or can I fill this up even more? I don't want my gun to break but if I can crank it up even more it would be unbelievable.
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drac
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Wed Oct 05, 2005 8:14 pm

You can get it up to about 80-90 PSI safely. I have a DWV launcehr that I've taken to 130 without problems, but i was stupid to do so.
Stay below 100 PSI.
msg72391
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Fri Oct 07, 2005 5:41 pm

Thanks that makes me feel better. It is funny because I thought 40psi was too much but if you are right i can take it up too 100psi!!
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