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 70 users online :: 5 registered, 0 hidden and 65 guests


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

Registered users: Bing [Bot], Exabot [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

Black Hole... My first Cannon

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 

Paint color?

Flat Black.
9
64%
Grey.
1
7%
White over the purple.
4
29%
 
Total votes : 14
  • Author
    Message

Unread postAuthor: CuddlyBurrito » Sun Dec 23, 2007 10:10 pm

i'm pritty happy with the outcome i'll probably will re-do the elbows after i have some real fun with it.

and the hose is off now to keep ppl at bay..
  • 0


CuddlyBurrito
Private
Private
 
Posts: 20
Joined: Thu Dec 20, 2007 7:14 pm
Reputation: 0

Unread postAuthor: daberno123 » Sun Dec 23, 2007 10:15 pm

Everybody makes such a big deal about reducing pilot volume by eliminating the hose but since your sprinkler is on the top it would be uncomfortable to hold. it might be like 5% less efficient but it will be much more fun because of the comfortablity. Just leave the hose on unless your obsessed with getting the maximum efficiency
  • 0

User avatar
daberno123
Colonel
Colonel
 
Posts: 594
Joined: Mon Nov 19, 2007 5:56 pm
Location: Ohio
Reputation: 0

Unread postAuthor: MrCrowley » Sun Dec 23, 2007 10:55 pm

They could be pressure rated, I think BC said some brands of fittings have that ring on them that makes 'em look like DWV.

Nice cannon btw, do what markfh11q said to find out.
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Unread postAuthor: octane89 » Sun Dec 23, 2007 11:29 pm

PVC Arsenal 17 wrote:Inefficiency frustrates the INTJ!

Eliminate the hose. Use NSF-pw.

But interreges the ENFP!
Had to say that pvc arsenal...

Change the dwv stuff, people are killed over that kind of arguement.
  • 0

"Only after disaster can we be resurrected."
Go Listen to My Friends...The Devil Wears Prada
User avatar
octane89
1st Lieutenant
1st Lieutenant
 
Posts: 257
Joined: Tue Sep 11, 2007 1:20 pm
Reputation: 0

Unread postAuthor: CuddlyBurrito » Mon Dec 24, 2007 12:03 am

ok on the end of the elbow it has "Blah Blah... and i see a circle that says NSF and a P in it but then to the right of it it says dwv... so that means that i'm screwed right?

EDIT: after checking every nook and crany, i have concluded that every piece on this cannon are NSF-PW except for the elbows that say

Image

any help is very appreciated
  • 0

Last edited by CuddlyBurrito on Mon Dec 24, 2007 12:28 am, edited 1 time in total.

CuddlyBurrito
Private
Private
 
Posts: 20
Joined: Thu Dec 20, 2007 7:14 pm
Reputation: 0

Unread postAuthor: MrCrowley » Mon Dec 24, 2007 12:26 am

That means NSF-Potable I think. Which may be OK, i'm not as familiar with Americans fittings so i'd wait for someone to confirm it.
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Unread postAuthor: CuddlyBurrito » Mon Dec 24, 2007 12:30 am

thanks MrCrowley i'm just new and starting a new hobby.. so i will become better just a learning experience so i hope my first isn't a complete failure
  • 0


CuddlyBurrito
Private
Private
 
Posts: 20
Joined: Thu Dec 20, 2007 7:14 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: octane89 » Mon Dec 24, 2007 12:31 am

The P does mean potable. When they say NSF-PW, the pw means " potable water."
  • 0

"Only after disaster can we be resurrected."
Go Listen to My Friends...The Devil Wears Prada
User avatar
octane89
1st Lieutenant
1st Lieutenant
 
Posts: 257
Joined: Tue Sep 11, 2007 1:20 pm
Reputation: 0

Unread postAuthor: BigGrib » Mon Dec 24, 2007 12:39 am

i'm pretty sure that the nsf-p is ok for pressure i think, and the fact that it says dmv on it means that it is also ok to use in drain waste and vent applications but the fact that it says nsf-p on it i believe means you're ok. and as far as reducing your pilot volume i'm not saying eliminate the hose all together all my pnuematics have a hose, but not a freaking 2 foot hose. use a hose and place the gun where it is comfortable but use the shortest hose possible plain and simple a 95% efficient gun that is comfortable to shoot is better than a 100% efficient gun that isn't comfortable.
  • 0

Yea, that's definitely going to get you at least a tazer.

<a href="http://www.youtube.com/watch?v=AkMkGOpAF4s">DONT TAZE ME BRO.. DONT TAZE ME... AHHHH</a>
facebook.com/biggrib
User avatar
BigGrib
Colonel
Colonel
 
Posts: 652
Joined: Mon Oct 01, 2007 11:43 pm
Location: TriCities, WA
Reputation: 0

Unread postAuthor: CuddlyBurrito » Mon Dec 24, 2007 12:43 am

BigGrib wrote:i'm pretty sure that the nsf-p is ok for pressure i think, and the fact that it says dmv on it means that it is also ok to use in drain waste and vent applications but the fact that it says nsf-p on it i believe means you're ok. and as far as reducing your pilot volume i'm not saying eliminate the hose all together all my pnuematics have a hose, but not a freaking 2 foot hose. use a hose and place the gun where it is comfortable but use the shortest hose possible plain and simple a 95% efficient gun that is comfortable to shoot is better than a 100% efficient gun that isn't comfortable.


thanks for the help, the hose was originally 1' and now i have held the cannon about 50 different ways and am now comfotrable and have trimmed it to about 5"
  • 0


CuddlyBurrito
Private
Private
 
Posts: 20
Joined: Thu Dec 20, 2007 7:14 pm
Reputation: 0

Unread postAuthor: Killjoy » Mon Dec 24, 2007 3:02 am

Also, I would check your 3" cap, coupling, and bushing as well. While they look to be pressure rated from over here, if you got them from Lowes or Home Depot, they're more often than not DWV, (past 2").


Oddely I have yet to fina a non-pressure rated end cap for 3" and 4" diameters at homedepot or lowes, everything else is dwv though. Lowes should have pressure rated 2" 90 degree joints, the guy was just stupid.

Nice cannon. Couple things could be improved on a little (already been mentioned), but it still looks like it got some power to it.
And the elbows are dwv, The socket depth is to short for any pressure rate part and I have some elbows with the same stuff written on them and I know they're dwv.
  • 0

Stanford Class of 2012

"In the end our society will be defined not only by what we create, but what we refuse to destroy"- John Sawhill

Killjoy
Brigadier General
Brigadier General
 
Posts: 1053
Joined: Sun Nov 12, 2006 12:51 am
Location: New Mexico
Reputation: 0

Unread postAuthor: mark.f » Mon Dec 24, 2007 7:54 am

Guys, and NSF rating is a sanitary rating. It only implies a pressure rating with potable water because most PW systems are pressurized.

Look for an ASTM rating. It should say something like "ASTM D~~~~".
  • 0

User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3465
Joined: Sat May 06, 2006 11:18 am
Country: United States (us)
Reputation: 21

Unread postAuthor: BigGrib » Mon Dec 24, 2007 8:15 am

CuddlyBurrito wrote:
thanks for the help, the hose was originally 1' and now i have held the cannon about 50 different ways and am now comfotrable and have trimmed it to about 5"


Do you notice a quicker response when you hit the trigger to when it fires now??
  • 0

Yea, that's definitely going to get you at least a tazer.

<a href="http://www.youtube.com/watch?v=AkMkGOpAF4s">DONT TAZE ME BRO.. DONT TAZE ME... AHHHH</a>
facebook.com/biggrib
User avatar
BigGrib
Colonel
Colonel
 
Posts: 652
Joined: Mon Oct 01, 2007 11:43 pm
Location: TriCities, WA
Reputation: 0

Unread postAuthor: bob-a-lu » Mon Dec 24, 2007 10:50 am

change the dwv parts, large pilot volume, and the barrel slopes up(get a barrel support).
  • 0

User avatar
bob-a-lu
Sergeant First Class
Sergeant First Class
 
Posts: 138
Joined: Fri Jul 06, 2007 12:24 pm
Location: alabama
Reputation: 0

Unread postAuthor: nivekatoz » Mon Dec 24, 2007 1:54 pm

You should put some kind of support between the barrel and the air tank.
If I were to paint it I would use spray-on truck bed liner paint...That stuff is not just paint ,its a protective coating.....You can only get a few colors in the store I think white or black...maybe red ....I would use black....
  • 0


nivekatoz
2nd Lieutenant
2nd Lieutenant
 
Posts: 237
Joined: Sat Nov 25, 2006 7:05 pm
Reputation: 0

PreviousNext

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'