Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 53 users online :: 4 registered, 0 hidden and 49 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

10+ Gallon (Now With Damage Videos!)

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
Sponsored 

This cannon is...

Simply a BEAST!!
16
57%
I wish mine was that big!!
5
18%
Pfft I've made bigger from spare parts...
7
25%
 
Total votes : 28
  • Author
    Message

Unread postAuthor: spudtyrrant » Fri Jun 26, 2009 7:53 pm

i just did external ballistics in the ggdt and it says you are getting approximately 600yards at 80psi with a 16.9 ounce water bottle not bad if you ask me :lol: edit: it should get even more than that i just put in my golfball cannon which it says has a range of 200yards when it has a measured range of 400 so even the impressive can be outdone lol
  • 0

User avatar
spudtyrrant
Colonel
Colonel
 
Posts: 550
Joined: Fri Jan 02, 2009 6:10 pm
Reputation: 0

Unread postAuthor: inonickname » Sat Jun 27, 2009 1:26 am

Yet again, one beastly awesome cannon!

After looking at the patent of the parsonault, I'm not quite getting the concept. Is it 'valveless' or a balanced piston..et cetera?
  • 0

PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
User avatar
inonickname
Lieutenant General
Lieutenant General
 
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am
Reputation: 0

Unread postAuthor: mobile chernobyl » Sat Aug 08, 2009 3:17 pm

Finally!!!

A planned shooting date of TOMORROW. If all holds together, I will be shooting a plethora of ammo which can be found on the first page, second post!

Yes, this is the FIRST time it will be shot at full power! up until now I have barely tipped the scale at 40PSI and it shoots amazingly. Tomorrow I will be shooting ammo with a lot more potential havoc on it's targets... whatever they may be.

Godspeed!
  • 0

User avatar
mobile chernobyl
Colonel
Colonel
 
Posts: 732
Joined: Sun Dec 03, 2006 11:53 am
Reputation: 9

Unread postAuthor: King_TaTer » Sat Aug 08, 2009 4:53 pm

Looking forward to it mobile. I saw all the ammunition you've collected. You've been quite busy. :D

What are the planned targets?
  • 0

Materials links:
<a href="http://www.discounthydraulichose.com/">Discount Hydraulic Hose</a>
<a href="http://www.buyfittingswholesale.com/#">Buy fittings wholesale</a>
<a href="http://www.flexpvc.com/">Flex PVC</a>
<a href="http://www.murrayequipment.com">MEI
</a>
User avatar
King_TaTer
1st Lieutenant
1st Lieutenant
 
Posts: 265
Joined: Fri Nov 17, 2006 6:14 pm
Reputation: 0

Unread postAuthor: mobile chernobyl » Sun Aug 09, 2009 6:14 pm

Well the shooting went down! It was a fun day, but ended sooner than thought with a not-so-catastrophic failure of the piston's seal face. Photo's are posted on the second post of the first page, video's will be updated in a little while.

All in all - the best ammo was the canned food. All of the "fletched" ammo I made did not fly straight or attempt to at all. Perhaps better fletching or something will be needed. I also didn't park the gun right up against the target either, most everything was about 20 yards away... so in that distance the ammo had enough time to tumble. Basically I did not get any good penetration test's but I did get to finally shoot this thing at 80psi and HOLY HELL!!!! it's hard to compare it to anything as I haven't exactly shot a air cannon I would classify as "big" in around 2 years, so I had nothing to compare the power to, but it was not disappointing!

So if anyone has any input on making better penetrating ammo that is more aerodynamically stable, I'm listening! I'm absolutely certain this gun will destroy it's targets well, the only thing holding it back now is the limited ammo selection.
  • 0

User avatar
mobile chernobyl
Colonel
Colonel
 
Posts: 732
Joined: Sun Dec 03, 2006 11:53 am
Reputation: 9

Unread postAuthor: c11man » Sun Aug 09, 2009 7:01 pm

thats some nice damage. while you have the piston out and repairing it you might want to consider reduing it so that its lighter. prolly not much preformance gain but i would deffenetly feel safer with les weight hitting the bumper
  • 0

User avatar
c11man
Brigadier General
Brigadier General
 
Posts: 783
Joined: Fri Feb 06, 2009 4:37 pm
Location: Wisconsin, USA
Country: United States (us)
Reputation: 0

Unread postAuthor: AtomicJew » Sun Aug 09, 2009 7:19 pm

Rifling: For ammo stability there is only one answer.

Very cool rolling tripod mount, what max angles for firing and travel? I plan to do something similar while mounting a cylinder in the third leg but had not considered adding an elevator till now. currently I use a 4 wheel cart with wheels that dont off-road well.
  • 0

User avatar
AtomicJew
Private
Private
 
Posts: 4
Joined: Sat Aug 08, 2009 5:30 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: mobile chernobyl » Sun Aug 09, 2009 7:41 pm

Rifling: Not easily attainable by the average spud-gunning enthusiast lol

Thanks for the comment on the stand. It reaches a max inclination of about 35 degrees. Do you have any work yet I could check out?
  • 0

Last edited by mobile chernobyl on Sun Aug 09, 2009 8:54 pm, edited 1 time in total.
User avatar
mobile chernobyl
Colonel
Colonel
 
Posts: 732
Joined: Sun Dec 03, 2006 11:53 am
Reputation: 9

Unread postAuthor: jonnyboy » Sun Aug 09, 2009 7:42 pm

Your fletching looks a little small. I would make them as big as reasonably possible, maybe a spring out design or something that unfolds so the barrel diameter doesn't matter.

@atomicjew

Dart's shouldn't need rifling :wink:
  • 0

mobile chernobyl wrote:I can shoot a Canuter Valve off my '82 Chevy Ram F150 AT LEAST 3/4 Mile with 'ma cannon made of soup cans duct taped together, then I just squirt some bacardi 151 in the chamber and hold up my cigarrete lighta and WHOOSH! That thing flies at least 3/4 mile
User avatar
jonnyboy
Colonel
Colonel
 
Posts: 591
Joined: Mon May 26, 2008 1:20 pm
Location: Williamston MI USA
Reputation: 0

Unread postAuthor: inonickname » Mon Aug 10, 2009 3:30 am

AtomicJew wrote:Rifling: For ammo stability there is only one answer.


Nope not really. Darts, as wellas foster and skirted rounds are also very accurate.

Riflings are done easily on smaller scales, though impractical for anything this big.
  • 0

PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
User avatar
inonickname
Lieutenant General
Lieutenant General
 
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am
Reputation: 0

Unread postAuthor: D_Hall » Sat Aug 15, 2009 11:13 am

Missed this thread until now but a couple thoughts....

1) That filing cabinet on the first page is an old government surplus cabinet from somewhere in the 40s to 60s. At the time, documents classified as "CONFIDENTIAL" were cleared for storage in such filing cabinets. In other words, they were considered "light" safes. Note that there are still a mess of those cabinets out there as they're so well made that they'll probably still be in use after I retire, but these days they're used as nothing more than simple filing cabinets and are no longer considered secure fore even mere "CONFIDENTIAL" documents.

2) As the projectile clears the muzzle all that pressurized air suddenly has an escape path and it takes it. Result? Sudden tailwind on the projectile which can destablize it. It may very well regain stability, but probably not gonna happen in the 20 yards you advertise as your range to target. Taking a longer range shot may yield better results. Alternatively, a muzzle break may help by giving much of the air a place to escape that doesn't take it across the tailfin surfaces.


edit: Oh, and while your cannon is a beauty, I had to vote "I've made bigger out of spare parts" because... Well, Vera is made primarily out of spare parts. :lol:
  • 0

Last edited by D_Hall on Sat Aug 15, 2009 9:33 pm, edited 2 times in total.
Simulation geek (GGDT / HGDT) and designer of Vera.
User avatar
D_Hall
Donating Member
Donating Member
 
Posts: 1759
Joined: Thu Feb 07, 2008 7:37 pm
Location: SoCal
Reputation: 6

Unread postAuthor: ramses » Sat Aug 15, 2009 12:33 pm

D_Hall wrote:Alternatively, a muzzle break may help by giving much of the air a place to escape that doesn't take it across the tailfin surfaces.


what, like this?
Image




for the love of god, it is a muzzle brake...

Image



sig heil grammar nazi!
Image

[/offtopic]

but yeah, a muzzle brake should help substantially. and it would look badass...
  • 0

POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
User avatar
ramses
Major General
Major General
 
Posts: 1679
Joined: Thu May 29, 2008 6:50 pm
Reputation: 3

Unread postAuthor: Ragnarok » Sat Aug 15, 2009 1:15 pm

Oh come on Ramses, even I wouldn't go to that length because of that.
I'll criticise for a post that looks like it's a reject from the infinite monkey room, but that response for a single spelling mistake?

That's right, you're being told you're a rude pedant by even this rude pedant's standards.

Also, the irony/hypocrisy in your post:

There are two errors in D_Hall's 188 word post ("Break" instead of "brake", and stabilize is missing an I).
There are SIX errors in your 31 word post. Six missing capital letters (5 sentence starts, and "Nazi" is a proper noun).

Three times as many errors in a sixth of the word count. There's a phrase for this, and it involves the words: "Black", "kettle" and "pot".
  • 0

Does that thing kinda look like a big cat to you?
User avatar
Ragnarok
Chief of Staff
Chief of Staff
 
Posts: 5339
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK
Reputation: 8

Unread postAuthor: Hotwired » Sat Aug 15, 2009 3:47 pm

Come on, if you're not going to PM a lecture don't post it.

Nothing can get posted on the interwebnet without someone knowing what it was it seems, not even an aged filing cabinet.
  • 0

User avatar
Hotwired
Lieutenant General
Lieutenant General
 
Posts: 2599
Joined: Fri Oct 13, 2006 5:51 am
Location: UK
Reputation: 0

Unread postAuthor: ramses » Sat Aug 15, 2009 3:59 pm

Ragnarok wrote:Oh come on Ramses, even I wouldn't go to that length because of that


Yeah, that post took me about 15 minutes to type up. Most of the time was spent looking for a gnarly muzzle brake to use. I suppose this post was just a built up rant about people consistently using the term "muzzle break."


Ragnarok wrote:There are SIX errors in your 31 word post. Six missing capital letters (5 sentence starts, and "Nazi" is a proper noun).

Three times as many errors in a sixth of the word count. There's a phrase for this, and it involves the words: "Black", "kettle" and "pot".


7, actually. It isn't proper to start a sentence with "and."

Oops, "7, actually" is a sentence fragment:oops: :oops:

All of my errors were an intentional attempt at irony.


on a side note, the picture of the "muzzle break" is actually the failed hybrid chamber from this thread. I hope Pat123 doesn't mind...
  • 0

POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
User avatar
ramses
Major General
Major General
 
Posts: 1679
Joined: Thu May 29, 2008 6:50 pm
Reputation: 3

PreviousNext

Return to Pneumatic Cannon Database

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'