Doc, what size valve is that, 1.5" or 2"? How big of a barrel do you use?
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I remember some time ago....maybe around 2001?, at Tippmann World Challenge 1 (might have been TWC2), they were launching squadbusters into the village area of the Hell Survivors. They were using the mortar/artillery type launcher. Not sure who made that thing, might have been Tippmann Ordnance. They launched about 10 or so of those things and had warned everyone out there that they were doing it. Apparently one of these grenades hit a referee in the back of the head, knocking him senseless, and knocking his mask off.
That was the last time they allowed the use of the launcher at TWC. I was at the game but
I didn't personally witness the hit, so it is hearsay. I do know that they only use that launcher now to launch T-shirts into the crowd at the closing ceremony.
Just a note to say that if you are going to use one of these. Be careful.Comment
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First, Be sure that your Cannon can Pass the requirements of the Scenario producer and Meet the insurance guidelines of the field.
*Most Rules say the expansion/air chamber must be made of metal and can not exceed 80 psi when charged.
*Most rules say cannons must chrono under 230 fps.
*Most rules say when launching cannon rounds {ie. lose paintballs} you must launch at at 45* angle.
In my on field experience, when you meet all the guidelines the cannon/mortar becomes an ineffective weapon.Originally posted by AGD
"No we don't install these things, there are no instructions and the box really sucks."
www.southwestvoodoo.comComment
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thats a $15, 1 inch rain bird 100-DV
40 gallon per minute
a 2 incher is a 75 dollar valve
200 gallon per minute flow!Comment
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Wow, thanks for the link glad to know there are 2 inchers.Originally posted by doc_Zoxthats a $15, 1 inch rain bird 100-DV
40 gallon per minute
a 2 incher is a 75 dollar valve
200 gallon per minute flow!
Now this is what I'm talking about...http://www.sprinklerwarehouse.com/detail.aspx?ID=148Last edited by MoeMag; 04-17-2006, 12:50 PM.Comment
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10,000 in prizes and Holding the Event at the end of the month?
Is this an Event in AZ.?
If it is, 2 weeks isn't much notice for some of the Larger Scenario teams in the state.
*Edit
**Found it....... APD SHELL SHOCK**
Good luck with your project.Originally posted by AGD
"No we don't install these things, there are no instructions and the box really sucks."
www.southwestvoodoo.comComment
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you might also want to look at a supah valve
a piston opens a huge port ASAP
theses are a solid set of plans:
venting the backside of a diaphragm with a blowgun works quite well
check out this system:
http://www.network54.com/Forum/9013/...ir+Cannon+pics...Comment
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Originally posted by doc_Zoxyou might also want to look at a supah valve
a piston opens a huge port ASAP
theses are a solid set of plans:
venting the backside of a diaphragm with a blowgun works quite well
check out this system:
http://www.network54.com/Forum/9013/...ir+Cannon+pics...
that supah valve is awsome. How the hell does that work!?
I really think we are going with a spring loaded 2in ball valve. We have seen 4 inchers but they are really hard to pull.
YUP. that is about what it looks like... only they are about 300 rounds short of what we are planning.
and my bolt is better 
I'm off to se if it will be a reality... back in a few hours.Last edited by MoeMag; 04-17-2006, 01:24 PM.Comment
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1st Merc has a nice piece of field arty:
it's a sort of bergles cannon design with the pressure vessel sleeving the barrel
more sur***e:
http://bradschmid.tripod.com/id9.htmlComment
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Why are you going for such a large valve? Unless you are going to have a giant toted behind a vehicle beast then a 3/4" or 1" valve would be plenty sufficient.Comment
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the bigger the valve, the larger the port
a larger port flows more volume in a shorter time
big butterfly or ball valves will work, but they need to be opened in a consistent, fast manner
on Mythbusters they constructed an air cannon that used a 12 inch butterfly.
to open it in a repeatable fashion, they but a 4 foot cheater on the handle and hung a few bench weights on the end.
it dropped open
i have run several ball valve LAWs and they are prone to leak down
and will bloop a nerf out if they are not snapped open
snapping open the ball valve can pull you off of target
i have seen spring or bungie assisted ball valve designs
Diaphragms and pistons snap open when the trigger side is vented
and you can also run the trigger valve in a remote location in a grip frame
i did a leak down test on my new rig
it held 70 PSI for 4 daysComment
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I say make a double barrel cannon that you can load one barrel and fire the other at the same time so you can crank out rounds much faster Im sure my idea is somehow totally flawed, but it sounds cool.
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