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Bigger... is always better!
Posted: Mon Mar 19, 2007 10:42 pm
by DR
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Dual-Chamber/ Dual 3" Valved / Dual 1" Valve-actuated 6" Cannon
Built: October 2005
Chamber Diameter: 6"
Chamber length: 5 feet
No. of chambers: 2
Barrel Diameter: 6"
Barrel Length: 6+ feet
Valve: 3" Irrigation
Valve actuated by: 1" Irrigation
No of valves: 4 (2 large actuated by 2 small)

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You think the SGTC Mega Launcher was big?
I built this (entirely for bragging rights) and have since disassembled the launcher and used/gave away many of the components. It was fun to play with for a while, but when you build cannons as large as these, your garage quickly loses its available floorspace.
<a href="
http://www.villagephotos.com/pubbrowse. ... 156">Photo Album</a>
Posted: Mon Mar 19, 2007 10:47 pm
by A-98
that...looks really, really, really loud.
any damage shots? and how did you fill it? big compressor?
Posted: Mon Mar 19, 2007 10:53 pm
by DR
A-98 wrote:that...looks really, really, really loud.
any damage shots? and how did you fill it? big compressor?
Can't seem to locate the CD that has all of my "stuff" from 2005?
It was filled with a 2 gallon compressor... it hated life for a while!
Posted: Mon Mar 19, 2007 11:01 pm
by Orpackrat
You could get bulk Co2 from a welding store, typically you can rent one for $5 a month + about $25-30 for a refill (50lb tank), attach a regulator, and quietly and efficiently fill the chambers. Co2 has basically the same charastics as air, just make sure the tank does not have a siphon, liquid Co2 in a plasic expansion chamber is dangerous.
Posted: Tue Mar 20, 2007 10:08 am
by joannaardway
*Speechless Awe*
Posted: Tue Mar 20, 2007 2:02 pm
by unisonmind
OMG that is one big ass cannon what can i say i love it
Posted: Tue Mar 20, 2007 2:21 pm
by imablackskater
that cannon is freaking huge i love the large sprinkler valves where did you get them
Posted: Tue Mar 20, 2007 2:43 pm
by zeigs spud
OMFG?!?!?! how much are those 3" sprinkler vales?!?!? and where did u get tem?
p.s.-any chance u could give me one of those valves lol?
Posted: Tue Mar 20, 2007 2:44 pm
by schmanman
wow! so there's 10 feet of 6 inch chamber? whew! I thought I was gonna have to make mine bigger! lol. it's an inside joke from spudshot.
so it's no longer around?
If I were to say "for bragging rights" about the swat, a bunch of people would flip out on me.
Posted: Tue Mar 20, 2007 5:13 pm
by Velocity
I've always liked this gun... never got to post about it because the topic was locked before I even came to the SGTC forums. I do not think I have ever seen a bigger pneumatic...
Posted: Tue Mar 20, 2007 5:17 pm
by ShowNoMercy
Well not to step on any toes but I like DR's cannon a lot better than the SWAT gun cause it looks a bit more refined and has a smaller profile, and I bet it can fit in a car, which is always a plus.

Posted: Tue Mar 20, 2007 6:38 pm
by schmanman
rmich732 wrote:I've always liked this gun... never got to post about it because the topic was locked before I even came to the SGTC forums. I do not think I have ever seen a bigger pneumatic...
the swat is a little bigger. because it has 10' of 6" and 3.5-4 feet of 4 inch.
not bragging, just pointing that out.
you guys dont think my canon looks refined? just curious.
Posted: Tue Mar 20, 2007 6:45 pm
by ShowNoMercy
Its not that its not refined, I just like how proffessional this one looks. I think you may have taken what I said the wrong way, I am in no way insulting your workmenship, however I am saying that DR's cannon seems more pleasing to the eye? I dunno. Sorry if I offended you, your piston valve on that thing is amazing in itself.
Posted: Tue Mar 20, 2007 7:05 pm
by schmanman
thanks!

I understand, And dont doubt that this gun has 100% top workmanship.
Posted: Tue Mar 20, 2007 7:07 pm
by isban
How much cash money did you have to drop for a project like that? Whenever I even think about something bigger than 4" the cost of the fittings and pipe always gets in the way. I think I've seen those valves before but I don't remember where. They would be awesome to have at my disposal.