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 50 users online :: 4 registered, 0 hidden and 46 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

Schrader Valve Questions

A place to ask general spud cannon related questions.
Sponsored 
  • Author
    Message

Schrader Valve Questions

Unread postAuthor: rsgpit » Sun May 29, 2005 1:54 pm

I am going to be making a basic ball valve pneumatic cannon, and was wondering how i get the schrader valve to stay in the back of the compression chamber without it leaking? I was thinking epoxy right?
  • 0


rsgpit
Private
Private
 
Posts: 11
Joined: Sun May 29, 2005 1:50 pm
Reputation: 0

Unread postAuthor: iamthewalrus » Sun May 29, 2005 1:59 pm

after u get the right size taped hole just wrap the valve in teflon tape or appoxy it
  • 0

i got connections with the modfia, watch who ur talkin to noob.


talk to me on AIM at iamthwalrus3
User avatar
iamthewalrus
Colonel
Colonel
 
Posts: 559
Joined: Mon Feb 28, 2005 9:28 pm
Location: Iowa (SO BORING!!)
Reputation: 0

Unread postAuthor: krazy khemist » Sun May 29, 2005 3:05 pm

I'm brand new here, so I don't know the application. With that caveat in mind, can you not use an automotive valve for a tubeless tire? Just drill a hole the same size as in the rim and pull the valve through from the inside until it seats on the groove in the rubber base.

Now, to peruse the forums for my own questions!

KK
  • 0


krazy khemist
Private
Private
 
Posts: 1
Joined: Sun May 29, 2005 3:01 pm
Reputation: 0

Unread postAuthor: spudshot » Sun May 29, 2005 4:34 pm

you can do that, though most people dont like those kinds of valves because they need such big holes, look around the compressor section of a hardware store for a tank valve, it has 1/8" NPT threads on one side of it (meant to screw into a port on an air tank) you'll also need a 1/8" NPT pipe tap,
if you dont know what a tap is, its a tool that you screw into a hole and it creates threads inside of the hole, in this case its the same threads as your tank valve will need, dont screw the tap all the way through, just put it in enough that you can see it on the inside of the pipe you're tapping.
once you've tapped the hole put some teflon tape around the tank valve's threads and screw it in, most likely you'll need a 7/16" wrench to screw it in enough so it doesnt leak.

make sure you drill and tap your hole where there are 2 layers of PVC plastic, where a fitting is glued over the pipe would be 2 layers. also use only fittings labeled NSF-PW DO NOT use fittings labeled NSF-DWV those fittings are not for pressure, and will not be safe. also for your pipe make sure your pipe has a pressure rating on it such as XXX-PSI avoid cellular core pipe as it will burst and is not safe at all.

you may want to go with a threaded 1" ball valve, that way you can switch to a sprinkler valve, or a modded sprinkler valve since the ball valve is about the worst valve for performance
  • 0

Image

spudshot
Brigadier General
Brigadier General
 
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am
Reputation: 0

Unread postAuthor: julz » Sun May 29, 2005 11:18 pm

i have a tubless valve thing and it works fine. has never leaked and didn't even need that big a hole, i just pushed it through.
---Julz
  • 0

User avatar
julz
Sergeant Major
Sergeant Major
 
Posts: 178
Joined: Mon Apr 18, 2005 12:54 am
Location: australia
Reputation: 0

Unread postAuthor: Aaron ????? » Mon May 30, 2005 1:45 am

yea those pull in valves are great no waiting for the glue to dry or anything!!!
  • 0


Aaron ?????
Sergeant
Sergeant
 
Posts: 99
Joined: Thu Mar 10, 2005 3:16 am
Location: australia
Reputation: 0

Unread postAuthor: iamthewalrus » Mon May 30, 2005 7:18 am

but dont they take 3/4" holes because i used to use them and thats the size hole i needed, but i did here of one person so had one and forced it through a 1/2" hole, but still a schrader valve only needs a 1/8" hole and u dont need to glue it in i just put teflon tape around mine.
  • 0

i got connections with the modfia, watch who ur talkin to noob.


talk to me on AIM at iamthwalrus3
User avatar
iamthewalrus
Colonel
Colonel
 
Posts: 559
Joined: Mon Feb 28, 2005 9:28 pm
Location: Iowa (SO BORING!!)
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: spudshot » Mon May 30, 2005 8:45 am

you dont need a 1/8" hole, you need a 5/16" hole and then you tap it then you screw the schrader valve in
  • 0

Image

spudshot
Brigadier General
Brigadier General
 
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am
Reputation: 0

Unread postAuthor: julz » Mon May 30, 2005 11:44 pm

dunno how much schrad... valves are but my tubeless one was only one dollar
---Julz
  • 0

User avatar
julz
Sergeant Major
Sergeant Major
 
Posts: 178
Joined: Mon Apr 18, 2005 12:54 am
Location: australia
Reputation: 0

Unread postAuthor: A-98 » Tue Jun 13, 2006 9:26 pm

the screw in valves are good. get the 1/4 NPT type and then just drill a 1/2 hole and it will fit in beatifully
EDIT:srry my bad ...i didnt even look at the ancientness of this post
  • 0

Last edited by A-98 on Tue Jun 13, 2006 11:29 pm, edited 1 time in total.
There are rules, and then there are hundred dollar bills.
User avatar
A-98
Brigadier General
Brigadier General
 
Posts: 921
Joined: Thu Apr 27, 2006 7:41 pm
Location: Santa Barbara, CA
Reputation: 0

Unread postAuthor: frogy » Tue Jun 13, 2006 9:35 pm

Um this is an ancient thread... don't bring it up...

Anyways just buy a 1/8" NPT Schrader valve and drill an 11/32" hole and thread it in.
  • 0

-FrOgY-

I wish people would stop needing a better signature!
User avatar
frogy
Colonel
Colonel
 
Posts: 603
Joined: Mon May 29, 2006 1:24 pm
Location: Ohio
Reputation: 0

Return to General Spud Cannon Related

Who is online

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

Reputation System ©'