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 77 users online :: 4 registered, 0 hidden and 73 guests


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

Registered users: Bing [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

homemade pump?

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

homemade pump?

Unread postAuthor: keep_it_real » Fri Dec 29, 2006 5:38 pm

I have a pretty good idea on how to build a small hand pump but I'm not positive. I swear I saw some detailed instructions on how to build one but I can't find it now. I found the high pressure pump on page 10 or something like that but I know there's another one.

Do you have to use two check valves or is there some other trick?
  • 0


keep_it_real
Captain
Captain
 
Posts: 320
Joined: Sat Dec 23, 2006 4:41 pm
Location: Bend, Oregon
Reputation: 0

Unread postAuthor: Bluetooth » Fri Dec 29, 2006 6:03 pm

On the plunger there is a rubber gasket like thing over a hole so when you push down it seals and pressurizes and when you pull up air comes in.
  • 0

User avatar
Bluetooth
Brigadier General
Brigadier General
 
Posts: 863
Joined: Tue Jun 27, 2006 7:57 am
Reputation: 0

i found it...

Unread postAuthor: keep_it_real » Fri Dec 29, 2006 8:49 pm

I found it again.

http://sci-toys.com/scitoys/scitoys/aero/vacuum/

for those who are interested...
  • 0


keep_it_real
Captain
Captain
 
Posts: 320
Joined: Sat Dec 23, 2006 4:41 pm
Location: Bend, Oregon
Reputation: 0

Unread postAuthor: Bluetooth » Fri Dec 29, 2006 9:01 pm

Thats a vacuum pump ( it sucks things up not blows out).
  • 0

User avatar
Bluetooth
Brigadier General
Brigadier General
 
Posts: 863
Joined: Tue Jun 27, 2006 7:57 am
Reputation: 0

Unread postAuthor: medievalman » Fri Dec 29, 2006 9:10 pm

the second half of the article is instructions on how to make a pressure pump.
  • 0

User avatar
medievalman
Captain
Captain
 
Posts: 319
Joined: Tue Dec 05, 2006 5:52 pm
Location: Central Minnesota
Reputation: 0

Unread postAuthor: Infernal2 » Fri Dec 29, 2006 9:27 pm

Ummm, to make a pressure pump from the link all you have to do is reverse your check valves.
  • 0


Infernal2
Staff Sergeant
Staff Sergeant
 
Posts: 122
Joined: Mon Sep 11, 2006 9:38 pm
Reputation: 0

semi auto valve

Unread postAuthor: keep_it_real » Sat Dec 30, 2006 10:31 am

I'm off topic a little but anyway...

First take a quick look at this: http://nerfhaven.com/homemade/zero_semiautovalve/

K, will the air from the temporary chamber flow into the final chamber fast enough to shoot a projectile (with some speed)? It seems like the holes in the brass tubing are rather small.
  • 0


keep_it_real
Captain
Captain
 
Posts: 320
Joined: Sat Dec 23, 2006 4:41 pm
Location: Bend, Oregon
Reputation: 0

semi auto valve

Sponsored

Sponsor
 


Unread postAuthor: Bluetooth » Sat Dec 30, 2006 10:33 am

I wouldn't build any of their valves. They haven't even tested them.
  • 0

User avatar
Bluetooth
Brigadier General
Brigadier General
 
Posts: 863
Joined: Tue Jun 27, 2006 7:57 am
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'