Kyle1292 Piston Valve Thread

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
Post Reply
User avatar
TalonXxX
Specialist
Specialist
Posts: 168
Joined: Sun Oct 16, 2005 3:22 pm
Location: Canada

1" fittings fit perfectly in 1.5" sch40 and when I say perfect... I mean perfect. Yes, that means caps too. I would recommend using a coulping and 2 spig plugs so that your neoprene can have a nice flat surface to aid in the sealing of the valve. The length of the coulping is also a nice length for the piston and by using 2 plugs... you reduce the dead volume that you have to pilot.
Top
User avatar
Atlantis
Corporal 5
Corporal 5
Posts: 955
Joined: Sat Sep 03, 2005 10:26 pm
Location: Florida

Milk caps fit inside 1.5" pipe, just screw 2 or 3 together.
I took a D or C cell battery and wrapped it in duct tape until it fit with half of a rubber ball glued onto it.
"There isn't a problem in the world that can't be solved by the proper application of explosives"
Top
User avatar
MrCrowley
Moderator
Moderator
Posts: 10078
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Been thanked: 3 times

why have you made 4 topics on pistons today?use the f'in search tool all of your questions can be answered in one topic or by searching for 5minutes.
Top
kyle1292
Private 4
Private 4
Posts: 62
Joined: Mon Oct 30, 2006 9:31 am
Location: Chicago
Contact:
Contact kyle1292

neoprene is a fabric isnt it?
Top
kyle1292
Private 4
Private 4
Posts: 62
Joined: Mon Oct 30, 2006 9:31 am
Location: Chicago
Contact:
Contact kyle1292

kk thx
:P !!!!!!!!!!!!!!!!!!!!!!!
Top
User avatar
SpudStuff
Sergeant 5
Sergeant 5
Posts: 1410
Joined: Sat Dec 10, 2005 3:55 pm
Location: Cupertino, California
Contact:
Contact SpudStuff

No it is rubber. It can be turned into thread and cloth made from it.
Top
User avatar
SquishY
Specialist
Specialist
Posts: 155
Joined: Tue Feb 07, 2006 6:37 pm
Contact:
Contact SquishY

I use rubber sink stoppers.
Whoever appeals to the law against his fellow man is either a fool or a coward.
Whoever cannot take care of themself without that law is both.
For a wounded man shall say to his assailant,
'If I live, I will kill you. If I die, You are forgiven.'
Such is the rule of honor.
Top
squeaks
Specialist 3
Specialist 3
Posts: 326
Joined: Sun Oct 01, 2006 5:45 pm
Location: Enoch, UT(next to Cedar City)

Like Spud Stuff said, neoprene is a rubber but can be used as a fabric like in waders.
Top
Infernal2
Specialist
Specialist
Posts: 122
Joined: Mon Sep 11, 2006 9:38 pm

Any hard but yielding rubber will do. Neoprene can be bought as gasketing sheets in your plumbing section. Quick caps from the same section works well.
Top
kyle1292
Private 4
Private 4
Posts: 62
Joined: Mon Oct 30, 2006 9:31 am
Location: Chicago
Contact:
Contact kyle1292

do u have to put a spring behind the piston to pull it back when u let the air out from behind it?
Top
kyle1292
Private 4
Private 4
Posts: 62
Joined: Mon Oct 30, 2006 9:31 am
Location: Chicago
Contact:
Contact kyle1292

does anyone know ive been searching for like an hour
Top
Infernal2
Specialist
Specialist
Posts: 122
Joined: Mon Sep 11, 2006 9:38 pm

No, you don't have to use a spring. One of the more talented designers never uses springs. However, you can use one, it depends on the OD of your piston vs pipe ID. This is all available via the search engine.
Top
kyle1292
Private 4
Private 4
Posts: 62
Joined: Mon Oct 30, 2006 9:31 am
Location: Chicago
Contact:
Contact kyle1292

wheres the search engine?
Top
User avatar
SpudStuff
Sergeant 5
Sergeant 5
Posts: 1410
Joined: Sat Dec 10, 2005 3:55 pm
Location: Cupertino, California
Contact:
Contact SpudStuff

Right below the login button!
Top
Post Reply

Create an account or sign in to join the discussion

You need to be a member in order to post a reply

Create an account

Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute

Register

Sign in

  • Similar Topics
    Replies
    Views
    Last post

Return to “Pneumatic Cannons”