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 57 users online :: 5 registered, 0 hidden and 52 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

How-To: Make a pneumatic cannon with a 2" piston valve.

Come find a how-to on how to do something, or come write your own for other people.
Sponsored 
  • Author
    Message

Unread postAuthor: tomthebomb137 » Sun Oct 21, 2007 9:20 pm

when you say 2" piston valve do you mean for a 2" barrel, or is this the size of the piston, and the brl size is more like 1 1/2" because i need a piston vavle for a 2" brl
thanks so much
-tom
  • 0

User avatar
tomthebomb137
Staff Sergeant
Staff Sergeant
 
Posts: 124
Joined: Tue Jun 12, 2007 2:26 pm
Reputation: 0

Unread postAuthor: battlemonkey » Sun Oct 21, 2007 9:50 pm

i dont know if you can but if so get some umpy just bigger and cut it to size may need a lathe tho
  • 0

User avatar
battlemonkey
Sergeant First Class
Sergeant First Class
 
Posts: 137
Joined: Sat Sep 22, 2007 3:42 pm
Reputation: 0

Unread postAuthor: MrCrowley » Sun Oct 21, 2007 10:19 pm

@tomthebomb

It usually refers to the size of the piston housing, which is the tee.

@battlemonkey

? :? Can you reword that please.
  • 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: tomthebomb137 » Mon Oct 22, 2007 2:05 pm

alright, then do you have any ideas for a 2in brl piston valve?
thanks again guys
  • 0

User avatar
tomthebomb137
Staff Sergeant
Staff Sergeant
 
Posts: 124
Joined: Tue Jun 12, 2007 2:26 pm
Reputation: 0

Unread postAuthor: MrCrowley » Mon Oct 22, 2007 2:11 pm

Same as my valve, just have the seat a smaller diameter then the piston, so maybe have a bushing as the seat instead of the 2" barrel.

If you have no idea what i'm talking about, do some more research there is plenty of info on this site.
  • 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: tomthebomb137 » Mon Oct 22, 2007 5:02 pm

alright so you mean put a 2" to 1 1/2" on the inside of the valve at the end of the barrel so the seat extends over the ends of the 1 1/2 bushing, il have a smaller face?
am i following you?
thanks again Mrcrowley
-tom
  • 0

User avatar
tomthebomb137
Staff Sergeant
Staff Sergeant
 
Posts: 124
Joined: Tue Jun 12, 2007 2:26 pm
Reputation: 0

Unread postAuthor: MrCrowley » Mon Oct 22, 2007 9:40 pm

Yeah, I think you got 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

Sponsored

Sponsor
 


Unread postAuthor: anthony5640 » Sat Jan 12, 2008 8:27 pm

what do i make the piston out of?
  • 0


anthony5640
Private
Private
 
Posts: 11
Joined: Tue Jul 24, 2007 2:35 am
Reputation: 0

Unread postAuthor: BigJon » Sat Jan 12, 2008 8:38 pm

Well since its 2" pipe 1 1/4" endcaps fit pretty good. Basically anything that will fit, for example MrCrowley used a deoderent can i believe?
  • 0

User avatar
BigJon
Staff Sergeant
Staff Sergeant
 
Posts: 120
Joined: Wed May 30, 2007 12:21 pm
Reputation: 0

Unread postAuthor: MrCrowley » Sat Jan 12, 2008 9:06 pm

anthony5640 wrote:what do i make the piston out of?


I'm not going to tell you, because it's all over my topic yet you failed to read it, even look at the damn pictures.

You obviously have no clue what you are doing, so learn how they work, how to build one, what the hell you are doing in the first place, then come back to me and you will realise exactly what I made it from and you will have no more questions.

Just learn what you are doing before asking questions.
  • 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: nabu92 » Mon Jan 28, 2008 9:28 pm

I finally understand how pistons work. Thanks.
  • 0


nabu92
Sergeant
Sergeant
 
Posts: 94
Joined: Sat Jan 21, 2006 6:57 pm
Reputation: 0

Unread postAuthor: MrCrowley » Mon Jan 28, 2008 10:11 pm

Glad I could help.
  • 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: niglch » Sun Apr 13, 2008 8:07 pm

Ok, I have one more quick question:
If you make a serviceable piston housing using the 4 screws, do those screws also serve to stop the piston when it fires back with the bumper in between? I think that's what you meant, but it just seems like the screws would take a lot of the impact. Is there any possibility that this could crack the PVC that the screws are threaded through?
  • 0


niglch
Staff Sergeant
Staff Sergeant
 
Posts: 116
Joined: Sat Jul 07, 2007 8:14 pm
Reputation: 0

Unread postAuthor: MrCrowley » Sun Apr 13, 2008 10:35 pm

Yes they do take the impact. I would actually never make a serviceable piston again using bolts. There are much easier ways that cost a bit more, but it'll save you in the end.

Bolts usually leak after awhile, and need sealing up, which destroys the point of the serviceable piston. Just use threaded fittings.

And yeah they probably could end up cracking the PVC.
  • 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: niglch » Mon Apr 14, 2008 9:56 am

Just use threaded fittings.

I feel like a total newbie asking this, but what is the proper way to put together threaded PVC parts? I tried using a threaded plug and female adapter the first time I tried building my housing but ran into some difficulties. I wrapped the male threads with about 3 layers of Teflon and tried to thread it into the adapter. However, the parts became locked up after only a few twists, and the end result was a cracked plug. Are the parts not supposed to thread completely into one another?
  • 0


niglch
Staff Sergeant
Staff Sergeant
 
Posts: 116
Joined: Sat Jul 07, 2007 8:14 pm
Reputation: 0

PreviousNext

Return to How-To Guide Database

Who is online

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

Reputation System ©'