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 67 users online :: 4 registered, 0 hidden and 63 guests


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

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

Shock Pump

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
Sponsored 
  • Author
    Message

Shock Pump

Unread postAuthor: Sticky_Tape » Tue Apr 15, 2008 6:35 pm

This is my shock pump it is similar to Btbs style pump but with a modification just ask questions if you don't understand somthing.
  • 0

Attachments
100-0012_IMG.JPG
The head of the pump shaft.
100-0011_IMG.JPG
Pump end half
100-0013_IMG.JPG
Handle
100-0010_IMG.JPG
pump fittings
100-0009_IMG.JPG
whole pump
You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: VH_man » Tue Apr 15, 2008 6:47 pm

looks nice....... hows that piston head holding up for ya? its simpler than the epoxy style...... Me likey........
  • 0

User avatar
VH_man
Major General
Major General
 
Posts: 1827
Joined: Sat Dec 09, 2006 6:00 pm
Location: New Hampshire
Reputation: 1

Unread postAuthor: Sticky_Tape » Tue Apr 15, 2008 6:51 pm

I would say it holds up just like any other pump head really.
  • 0

You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: LikimysCrotchus5 » Tue Apr 15, 2008 6:52 pm

How well does this piston work?

This just goes to show you how easily a piston can be made.

Nice job, makes me want to build my own.
  • 0

4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
User avatar
LikimysCrotchus5
Brigadier General
Brigadier General
 
Posts: 1100
Joined: Tue Sep 04, 2007 10:16 pm
Reputation: 0

Unread postAuthor: VH_man » Tue Apr 15, 2008 6:54 pm

If you could go into how you made the piston head that would be great...

im constructing one of theese over the summer for my .40 cal dartgun and yours is the simplest ive seen yet.
  • 0

User avatar
VH_man
Major General
Major General
 
Posts: 1827
Joined: Sat Dec 09, 2006 6:00 pm
Location: New Hampshire
Reputation: 1

Unread postAuthor: Sticky_Tape » Tue Apr 15, 2008 7:12 pm

That's what I go for ease of construction instead of moderately complicated as hell :roll: For the end of the pump I used 3 5/16'' nuts
one brass washer that fits the 1/2'' pipe I had to drill the middle a little larger and a o-ring that fits the 1/2'' pipe

The washer is epoxied onto one of the 5/16'' nuts then that is epoxied to the 5/16'' threaded rod and other nuts and o-ring go as shown

EDIT: if you atemt to use this pump head design and you use 1/2'' pipe you need to use the thinner wall diameter pipe if you can tell me what type it is I think it is type m that would be great.
  • 0

Attachments
untitled.JPG
looky
untitled.JPG (11.88 KiB) Viewed 1293 times
You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: VH_man » Tue Apr 15, 2008 7:50 pm

You could even use a .5 inch locknut to negate the need for epoxy.....

is the washer free-floating? or attached to the nut airtightly (NEOLOGISM!)

and the type of copper is type M copper, its "low pressure" copper even though its rated to nearly 400 PSI..........
  • 0

User avatar
VH_man
Major General
Major General
 
Posts: 1827
Joined: Sat Dec 09, 2006 6:00 pm
Location: New Hampshire
Reputation: 1

Sponsored

Sponsor
 


Unread postAuthor: Sticky_Tape » Tue Apr 15, 2008 8:07 pm

Thanks VH-man and yes the o-ring is free floating but the washer is glued to the 5/16'' nut above the o-ring what is neologism?
  • 0

You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: VH_man » Tue Apr 15, 2008 8:17 pm

its a made-up word... lol sorry i didnt point that out before.

thank you, im proboably going to construt one of these this weekend.................. that is if Crew gives me my weekend free.
  • 0

User avatar
VH_man
Major General
Major General
 
Posts: 1827
Joined: Sat Dec 09, 2006 6:00 pm
Location: New Hampshire
Reputation: 1

Unread postAuthor: Sticky_Tape » Tue Apr 15, 2008 8:29 pm

I need to tell you that the modification I made was I put a endcap with a hole drilled in it on the end of the piece of pipe that goes into the 3/4''x1/2''x1/2'' tee this allows the pump to reach higher pressures without the end of the pipe cutting into the sealling face on the piston in the check valve I needed to tell you that before you make the pump.
  • 0

You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: VH_man » Tue Apr 15, 2008 8:32 pm

Im planning on using a commercialy availiable check valve, but thanks for the heads up!
  • 0

User avatar
VH_man
Major General
Major General
 
Posts: 1827
Joined: Sat Dec 09, 2006 6:00 pm
Location: New Hampshire
Reputation: 1

Unread postAuthor: FordGtMan » Tue Apr 15, 2008 8:40 pm

What did you use to screw the pump onto the schrader? did you just take one off a regular pump head?
Nice pump btw, i plan on making one soon :)
  • 0

User avatar
FordGtMan
Captain
Captain
 
Posts: 314
Joined: Thu Oct 25, 2007 9:15 pm
Location: southlake Tx
Reputation: 0

Unread postAuthor: VH_man » Wed Apr 16, 2008 5:32 am

FordGtMan, I have a better way to connect homemade pumps....

if possible, replace your Schraders with Quick Disconnect fittings. that way, you can plumb a Quick-disconnect into your pump and not have to worry about things like leaking or the fill popping off.

however, im pretty sure if you wanted to stick with schraders you could take one of the thread things off the end of one of the CO2 Inflators
  • 0

User avatar
VH_man
Major General
Major General
 
Posts: 1827
Joined: Sat Dec 09, 2006 6:00 pm
Location: New Hampshire
Reputation: 1

Unread postAuthor: Sticky_Tape » Wed Apr 16, 2008 6:18 am

What I did was use 1/4'' id braided pipe and a hose clamp you clamp the hose onto the shrader it works great! It never poped off.
  • 0

You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: hyldgaard » Wed Apr 16, 2008 2:59 pm

With ½" pipe you wont get a whole lot of flow, so you might want to cut a bit down on that pressurehose if its possible, or maybe sleeve it on the inside with some smaller diameter hosing to decrease volume. Believe me, it will save you some sweat :wink:
  • 0

User avatar
hyldgaard
Sergeant Major
Sergeant Major
 
Posts: 187
Joined: Tue Sep 25, 2007 4:21 am
Location: Denmark
Reputation: 0

Next

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'