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 72 users online :: 5 registered, 0 hidden and 67 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], DENVER73, Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Syringe Coax Design?

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

Syringe Coax Design?

Unread postAuthor: lklaussen » Fri Oct 05, 2012 9:46 am

Hey guys, I haven't been on here for a while! The other day I was designing a mini pneumatic around a syringe for a small size projectile like an airsoft or pellet.

How many PSI can you put in a standard syringe before it explodes?

I've attached a pic of my design drafted up in google docs.

Will it work? What are some ways to improve it?
  • 0

Attachments
pistonsyringevalve.jpg
coax piston in syringe
pistonsyringevalve.jpg (23.54 KiB) Viewed 535 times

lklaussen
Corporal
Corporal
 
Posts: 61
Joined: Sat Nov 05, 2011 7:45 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri Oct 05, 2012 12:54 pm

Here's one I had made a long time ago, with the seal inverted and made into a toolies valve, not something you want to take beyond 50 psi though.
  • 0

Attachments
s3dprototype (1).jpg
s3dprototype (1).jpg (29.76 KiB) Viewed 515 times
s3dprototype.jpg
s3dprototype.jpg (27.07 KiB) Viewed 515 times
User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: lklaussen » Fri Oct 05, 2012 1:16 pm

That looks awesome! I'll probably make one like that with one of my smaller syringes. What can I use to plug the end other than epoxy?
  • 0


lklaussen
Corporal
Corporal
 
Posts: 61
Joined: Sat Nov 05, 2011 7:45 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri Oct 05, 2012 1:27 pm

You can machine an acetal endcap, cut an o-ring groove then drill and tap some radial holes so you can attach it to the syringe tube with bolts.

... or you can use epoxy ;) let's face it, if you're using syringe tubes then your resources are limited, therefore epoxy is your best friend :)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: lklaussen » Fri Oct 05, 2012 1:59 pm

That's true, but I am currently out of epoxy :shock:
  • 0


lklaussen
Corporal
Corporal
 
Posts: 61
Joined: Sat Nov 05, 2011 7:45 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri Oct 05, 2012 2:07 pm

My first pneumatics were made with balsawood endcaps held together with this stuff:

Image
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot], DENVER73, Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'