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PostPosted: Wed Jun 01, 2005 12:56 am
by BewareOfDog
I really enjoyed the Combustion Launcher that I made last summer for shooting canteloupes. So this year, I thought I'd build another. But the thought of project boxes, wiring, fans, stunguns, & propane meters was unappealing though. :evil:... So I thought I'd try a pnuematic.

I started it this morning, and it's almost finished.
(I've still got to add some gauges and and the fill lines, modify the valves, and solvent weld the barrel on).

<a href="">Side-View Close-up</a>
<a href="">Rear-View Close-up</a>
<a href="">Long-View</a>

I need some advice though... I <b><i>could</i></b> add a 1" modded-valve to each 3" valve, rig the lines to a Tee, and dump it through a blowgun.

OR, I could simply tap in a 3/8"NPT x 3/8" Hose Barb (90*) into each 3" valve, run a 3/8" Hose (from each 3" valve)to a 1" Tee, and dump the air out of the 1" Tee with a 1" modded-valve.

The second option sounds easier, (and will probably cost less) but does anoyne think it'll dump the air just as fast?

PostPosted: Wed Jun 01, 2005 1:26 am
by ryanpowell167
Why dont you run some big hose and dump it through maybe a 1" ball valve. I think i would go with the second one too. Not just the cost, but its a pain to mod 4 valves, two of which are 3". You should put that thing on a stand too. Nice work. What size barrel is it going to have?

PostPosted: Wed Jun 01, 2005 2:41 am
by acanz
Id run the hoses into a 1 1/2" sprinkler valve piloted by a 3/4" sprinkler, if that would even work. I dont know if there will be enough pressure to properly seat and unseat all these valves.

PostPosted: Wed Jun 01, 2005 10:54 am
by utcpyro
I'd say run the 3/8" hose from each to a single 1" valve. It would be simpler and probably perform just as well.

PostPosted: Wed Jun 01, 2005 11:06 am
by luckythirteen13
those valves are sort of far apart, id put a 3/4" sprinkler on each valve, then run air line two each and to a blow gun/ball valve for trigger

PostPosted: Wed Jun 01, 2005 6:00 pm
by OJHSPyro89
Im with L13. IF the gun where to ever break or be broken somehow, the sprinklers would be independent and not rip eachother apart.

Plus, 2 is better than 1.

Just a thought, are u from Texas cause the TV allways says, "Everythinsg bigger in texas."

PostPosted: Wed Jun 01, 2005 7:53 pm
by Mr.Plow
No, he's from Utah. Check his profile

State motto: "Everything's boring in Utah" ;)

PostPosted: Wed Jun 01, 2005 8:12 pm
by draculon
^ Obviously. Every thing that DR makes looks like he did it out of plain boredome. Thats why everything just keeps getting bigger.

I like the cannon DR. It looks like it is going to be devastating. What do you plan to shoot <i>at</i>?

PostPosted: Thu Jun 02, 2005 9:52 am
by syco kilaa
well I've been gone for a while and for my first post back I would like to ask who ever is making this gun (DR, sorry about forgetting that for a second), from the pictues the "tee" that is being used looks mighty thin, or is that just me?

PostPosted: Thu Jun 02, 2005 10:24 am
by jasonsmithmyer
This is off topic but, I was just wondering why you added the picture with the pumkin puking in the toilet to the "long-view" picture? The only reason I ask is because it's not in the other pictures that give a same view of the wall so, I'd assume its super-imposed.

It's still funny though.