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 67 users online :: 5 registered, 0 hidden and 62 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

Air cannon problems

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

Air cannon problems

Unread postAuthor: jsefcik » Sat Jul 23, 2011 1:09 am

I have another air cannon, im using the sprinkler valve with it , But I am not getting good results, my small cannon works better,

Any ideas what i should do to my bigger cannon for better results?

Cut the chamber down? PLEASE HELP
Ill get pics up , hopefully tomorrow

Also should I put the specs up to hopefully help to figure out my problem?

here are the pics
http://imageshack.us/g/121/dscf8181.jpg/

specs:

4 ft chamber
53 3/4 inch barrel
I didnt know what i was think when i made the barrel,
Pressure gauge broke, in the process of getting another one, and im taking out tha back part and put a schrader valve and pressure gauge into the cap. Just gotta install that .

Anything else need let me know
  • 0

Last edited by jsefcik on Sat Jul 23, 2011 9:31 am, edited 1 time in total.

jsefcik
Brigadier General
Brigadier General
 
Posts: 1132
Joined: Tue Jun 07, 2011 10:11 am
Reputation: 0

Re: Air cannon problems

Unread postAuthor: Gippeto » Sat Jul 23, 2011 1:31 am

jsefcik wrote:Ill get pics up , hopefully tomorrow

Also should I put the specs up to hopefully help to figure out my problem?



Why did you even START the thread WITHOUT the pics AND that information???

What's the point?? :roll:

Pretty stupid IMNSHO.
  • 0

"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
Gippeto
Donating Member
Donating Member
 
Posts: 2394
Joined: Sat Jan 19, 2008 10:14 am
Location: The Great White North...Canada eh!
Reputation: 11

Re: Air cannon problems

Unread postAuthor: Crna Legija » Sat Jul 23, 2011 2:56 am

Gippeto wrote:Pretty stupid IMNSHO.


Image

anyway, cutting the camber will make it weaker so, no don't do that.

Have you moded the valve? if so how big is the pilot volume?.
only other thing really is longer barrel and more pressure.
  • 0

'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
Crna Legija
Major General
Major General
 
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia
Reputation: 0

Unread postAuthor: jsefcik » Sat Jul 23, 2011 6:26 am

@ Crna Yes the valve is modded,

When you mean pilot volume, Do you mean chamber size?

If you look at my other thread, with (My Air cannon its the same sprinkler valve)

OK Since pics are needed they will be up, asap
  • 0


jsefcik
Brigadier General
Brigadier General
 
Posts: 1132
Joined: Tue Jun 07, 2011 10:11 am
Reputation: 0

Unread postAuthor: Crna Legija » Sat Jul 23, 2011 6:50 am

jsefcik wrote:When you mean pilot volume, Do you mean chamber size?


nope i mean pilot volume, aka the volume in between the piston/diaphragm and pilot valve.
  • 0

'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
Crna Legija
Major General
Major General
 
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia
Reputation: 0

Unread postAuthor: saefroch » Sat Jul 23, 2011 7:36 am

Specs, pictures, links. You should have included all of that in the original post.
  • 0

User avatar
saefroch
Major General
Major General
 
Posts: 1679
Joined: Mon Jun 08, 2009 8:47 am
Location: U.S.A.- See Map
Country: United States (us)
Reputation: 0

Unread postAuthor: jsefcik » Sat Jul 23, 2011 9:11 am

My air cannon doesnt have a piston just sprinkler valve

I think my problem might be dead space
  • 0


jsefcik
Brigadier General
Brigadier General
 
Posts: 1132
Joined: Tue Jun 07, 2011 10:11 am
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: mattyzip77 » Sat Jul 23, 2011 9:58 am

jesse, is your cannon still leaking?? first thing u gotta do is get it as air tight as possible. teflon tape, pipe dope, jb weld, and epoxy are your friends!!! by the looks of the cannon, you should have decent results once its air tight and no leaky leaky!!!! and when you use teflon tape, get the yellow kind for gas. its alot thicker, and in my opinion, it works a whole lot better than the regular!! talk to you soon. we will get this puppy going!!! 8) 8)
also, if you cap it, get a good cap thats rated and has nsf pw on it and is at least schedule 40. for a cap this is very important dude!!
  • 0

User avatar
mattyzip77
Donating Member
Donating Member
 
Posts: 1249
Joined: Tue Jun 28, 2011 12:22 pm
Location: Taxachusetts
Reputation: 0

Unread postAuthor: jsefcik » Sat Jul 23, 2011 10:26 am

Yea im going to cut off the end piece with all the threads and put on a cap

I have some yellow teflon somewhere, ill have to find it
  • 0


jsefcik
Brigadier General
Brigadier General
 
Posts: 1132
Joined: Tue Jun 07, 2011 10:11 am
Reputation: 0

Unread postAuthor: Gun Freak » Sat Jul 23, 2011 8:57 pm

A smaller chamber won't help. With that big chamber, I think you will see better results by using a longer barrel. Sprinkler valves don't have great flow and typically aren't the way to go when constructing large cannons. When you get up in size, you pretty much need to step up to a better valve like a piston valve.
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Unread postAuthor: jsefcik » Sat Jul 23, 2011 9:35 pm

ok gotcha, should i cut the part with all the steel parts on it off?
  • 0


jsefcik
Brigadier General
Brigadier General
 
Posts: 1132
Joined: Tue Jun 07, 2011 10:11 am
Reputation: 0

Unread postAuthor: Gun Freak » Sat Jul 23, 2011 9:37 pm

Yes because that reducer isn't even pressure rated anyway and you can make it more compact by using a coupling, then bushings until it gets to the size of the steel.
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Unread postAuthor: jsefcik » Sat Jul 23, 2011 9:56 pm

cut all the pipe out and put in a coupling? lol
  • 0


jsefcik
Brigadier General
Brigadier General
 
Posts: 1132
Joined: Tue Jun 07, 2011 10:11 am
Reputation: 0

Unread postAuthor: Gun Freak » Sat Jul 23, 2011 9:56 pm

Cut where the reducer starts, then put the coupling on the end of that.
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Unread postAuthor: mattyzip77 » Sat Jul 23, 2011 11:07 pm

he has a bell reducher on each end, so he needs a bushing on one end and a rated cap on the other end. it almost looks like the barrel is going through the whole chamber, but it isnt
  • 0

User avatar
mattyzip77
Donating Member
Donating Member
 
Posts: 1249
Joined: Tue Jun 28, 2011 12:22 pm
Location: Taxachusetts
Reputation: 0

Next

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'