PMCTDRS

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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Darkside 6ix
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Tue Jul 31, 2007 7:22 pm

Pneumatic Marble Cannon That Destroys Random Stuff

Specs from barrel to chamber: 2 1/2 feet of 1/2 sch 40, 3/4x1/4 reducer, 3/4 watermaster sprinkler valve, 1/4 nipple, 1/4 blowgun, 3/4 male fitting, 1x3/4 reducer, 1 1/2x1 reducer, 1 foot of 1 1/2 sch 40, 1 1/2 endcap, schrader valve and psi gauge.

whole cannon
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cannon taken apart
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cannon's chamber and valve assembally
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damage pic #1
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damage pic #2(notice how the threading of the bottle is in the cap)
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ammo
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hope you guys like it
Last edited by Darkside 6ix on Tue Jul 31, 2007 8:43 pm, edited 1 time in total.
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spudthug
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Tue Jul 31, 2007 7:31 pm

take the fitting off of the blowgun it will increase performance. but anyway nice gun!!

this looks alot like my first gun. i like the simplicity in sprinkler valve guns

wee first post..

btw if anyone has the FX channel you should turn it to it..one of the best ever movies are one...the day after tomorrow..
4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Darkside 6ix
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Tue Jul 31, 2007 8:06 pm

hey i tried to take that fitting off but its like welded on there
thanks for the comment
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singularity
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Tue Jul 31, 2007 8:19 pm

it should definitely come off, you might need some wrenches though. i am pretty sure theres an o-ring on it
be sure to check out my <a href="http://www.spudfiles.com/forums/ak-styl ... 9.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Fnord
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Tue Jul 31, 2007 8:25 pm

Me likes.
If you can make a custom hangrip out of bondo or something, it would be uber-1337.
You might consider sawing the fitting off of the blowgun, then drilling it out. You'll probably notice the difference in preformance.
btw if anyone has the FX channel you should turn it to it..one of the best ever movies are one...the day after tomorrow..
I saw it twice. That was enough for me.
I'll stick with my eureka :)
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Darkside 6ix
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Tue Jul 31, 2007 8:42 pm

aight thanks for the help... how would i saw it off... with a hack saw or a band saw?
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Fnord
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Tue Jul 31, 2007 8:49 pm

A hack saw should work fine.
If you have any vice grips try that before you cut it. It might come loose.
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Darkside 6ix
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Tue Jul 31, 2007 8:51 pm

ok well im guna try a wrench first and btw do you know what pipe size i need for a paintball
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BigJon
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Tue Jul 31, 2007 9:12 pm

I think 3/4" sch 40 is good for paintballs and, correct me if i'm wrong, but i think so is 1/2" sdr21?
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rednecktatertosser
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Tue Jul 31, 2007 10:49 pm

actually 3/4" CPVC is the best for paintball in my oppinion.
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jackssmirkingrevenge
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Tue Jul 31, 2007 10:56 pm

slightly bigger chamber would do good for power, methinks, but nice effort.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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origin unknown
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Tue Jul 31, 2007 11:13 pm

Nice gun. I like the tiny pressure gauge. Is sch80 3/4" pvc a good barrel for paintballs?
Ecclesiastes 1:9 - What has been will be again, what has been done will be done again; there is nothing new under the sun.
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iPaintball
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Tue Jul 31, 2007 11:21 pm

Very nice gun! I too like the mini gauge. Keep up the good work!

No, 3/4" Sch 40 fits paintballs horribly. 3/4" Sch 80 works fine, but I would reccomend 3/4" CPVC because it fits paintballs perfectly, and I'm not sure about 1/2" SDR 21.
Summer Projects:
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noname
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Tue Jul 31, 2007 11:35 pm

Best fit for paintballs:
3/4" Sch 120>1/2" SDR 13.5>3/4" CPVC>3/4" Sch 80 PVC>3/4" Sch 40 PVC

Nice gun, a good basic one, but still strong enough to have fun with. Good job!
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spud yeti
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Tue Jul 31, 2007 11:45 pm

Good job on the gun, I like it. How high does that mini gauge go up to?
really good quote/phrase here
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