Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Site Menu
Sponsored
Who is online

In total there are 60 users online :: 1 registered, 0 hidden and 59 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot] based on users active over the past 5 minutes
The Team
Administrators
administrators.png PCGUY
Global Moderators
global_moderators.png Brian the brain
global_moderators.png CS
global_moderators.png jrrdw
global_moderators.png MrCrowley

3 inch piston

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

3 inch piston

Unread postAuthor: richardbridges » Wed Aug 23, 2006 5:48 pm

[img]
  • 0

Attachments
77.jpg
77.jpg (4.9 KiB) Viewed 2643 times
66.jpg
66.jpg (11.86 KiB) Viewed 2643 times
55.jpg
55.jpg (8.57 KiB) Viewed 2643 times
44.jpg
44.jpg (4.42 KiB) Viewed 2643 times
33.jpg
33.jpg (11.84 KiB) Viewed 2643 times
22.jpg
1. 3" rubber washer

2. 3" pvc disks

3. 2 5/8" dia., 1/4" thick pvc disks
(1/4" for ring expansion)
4. 1 9/16" pvc disks (inside dia. of
1 1/2" pcv pipe)

5. AS568A-334 orings (2 5/8" inside,
3" outside, 3/16" thick)

6. 4 1/4" long 1 1/2" pvc pipe

7. 2" to 1 1/2" bell reducers
22.jpg (17.28 KiB) Viewed 2643 times
11.jpg
I have not made equalization holes yet.
All disks were boiled and pressed from scrap pipe. Disks were cut out on a vertical lathe (an old drill press). Tell me what you all think.
11.jpg (9.13 KiB) Viewed 2643 times
User avatar
richardbridges
Donating Member
Donating Member
 
Posts: 43
Joined: Sat Jul 15, 2006 7:46 pm
Location: GA
Reputation: 0
Top

Share On:

Share on Facebook Facebook Share on Twitter Twitter Share on Digg Digg Share on Reddit Reddit Share on Tumblr TumblrShare on Google+ Google+

Unread postAuthor: Velocity » Wed Aug 23, 2006 5:50 pm

it looks a bit big, but nonetheless beautiful! I would love to have a lathe, but I cannot justify spending $300+ just to make oring grooves; its barrel sealers for me!
  • 0

User avatar
Velocity
Brigadier General
Brigadier General
 
Posts: 1039
Joined: Tue Feb 07, 2006 5:42 pm
Reputation: 0
Top

Unread postAuthor: richardbridges » Wed Aug 23, 2006 5:52 pm

hit garage sales for old drill presses. You can find them for 50 and under
  • 0

User avatar
richardbridges
Donating Member
Donating Member
 
Posts: 43
Joined: Sat Jul 15, 2006 7:46 pm
Location: GA
Reputation: 0
Top

Unread postAuthor: noname » Wed Aug 23, 2006 6:15 pm

Wow. That is very nicely done. Is that for a barrel sealing piston or chamber sealing? (rmich, it could be for either)
  • 0

User avatar
noname
Lieutenant General
Lieutenant General
 
Posts: 2699
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA
Country: United States (us)
Reputation: 9
Top

Unread postAuthor: saladtossser » Wed Aug 23, 2006 6:20 pm

thats a pretty nice looking piston, was any glueing done between the disks? or is it just held together by the bolt?
  • 0

"whoa... I thought pimpmann was black..."-pyromanic13
User avatar
saladtossser
Brigadier General
Brigadier General
 
Posts: 1234
Joined: Sat Mar 26, 2005 10:40 am
Location: Toronto
Reputation: 0
Top

Unread postAuthor: Shrimphead » Wed Aug 23, 2006 6:45 pm

Looks great! Nice work.
  • 0

Controlled insanity = Genius
Life flies when you're being dumb.
User avatar
Shrimphead
Colonel
Colonel
 
Posts: 509
Joined: Thu Nov 17, 2005 7:42 pm
Reputation: 0
Top

Unread postAuthor: richardbridges » Wed Aug 23, 2006 6:54 pm

no glue yet. Wanted to be able to show the pieces.
  • 0

User avatar
richardbridges
Donating Member
Donating Member
 
Posts: 43
Joined: Sat Jul 15, 2006 7:46 pm
Location: GA
Reputation: 0
Top

Sponsored

Sponsor
 

Unread postAuthor: SpudStuff » Wed Aug 23, 2006 7:14 pm

Very Well Done.
You should make a 4" version
  • 0

User avatar
SpudStuff
Major General
Major General
 
Posts: 1410
Joined: Sat Dec 10, 2005 3:55 pm
Location: Cupertino, California
Reputation: 1
Top

Unread postAuthor: Bluetooth » Wed Aug 23, 2006 7:29 pm

You should use rubber sement to glue them because it would make a kind of like rubber padding and you could still take them apart if you needed to fix something.
  • 0

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

Unread postAuthor: richardbridges » Wed Aug 23, 2006 8:03 pm

It is for a barrel sealing cannon. I'll put it together this weekend.
  • 0

User avatar
richardbridges
Donating Member
Donating Member
 
Posts: 43
Joined: Sat Jul 15, 2006 7:46 pm
Location: GA
Reputation: 0
Top

Unread postAuthor: Flinchy » Wed Aug 23, 2006 8:17 pm

i like how cleanly you were able to construct it, great job!

-flinch :)
  • 0

User avatar
Flinchy
Sergeant First Class
Sergeant First Class
 
Posts: 138
Joined: Tue Apr 11, 2006 6:38 pm
Location: Nifelheim
Reputation: 0
Top

Unread postAuthor: huse_spud » Wed Aug 23, 2006 8:26 pm

sweet! too bad my life's too busy to build spudguns anymore :(
  • 0

User avatar
huse_spud
1st Lieutenant
1st Lieutenant
 
Posts: 269
Joined: Sat Apr 15, 2006 6:52 pm
Location: Center Junction, IA
Reputation: 0
Top

Unread postAuthor: mark.f » Wed Aug 23, 2006 9:31 pm

Holy crap that thing is sexy!

I like how you combined a crapload of components into one smooth and steamlined piston. Great work.
  • 0

User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3533
Joined: Sat May 06, 2006 11:18 am
Country: United States (us)
Reputation: 27
Top

Unread postAuthor: badkitty » Tue Sep 12, 2006 9:05 pm

may i ask ...how much u spent on all those parts ? if u kept track
  • 0


badkitty
Private
Private
 
Posts: 12
Joined: Sat Apr 01, 2006 4:53 am
Reputation: 0
Top

Unread postAuthor: MrCrowley » Tue Sep 12, 2006 10:56 pm

wow, nice piston, beats my pringles 3" anyday, how much does that thing weigh?
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10212
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 7
Top
Next

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot]
SpudFiles skin originally developed by: John Olson - Modifed by PCGUY
Under the hood dynamics run by phpBB®
Enhanced with SEO and KISS
Reputation System ©'