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 55 users online :: 5 registered, 0 hidden and 50 guests


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

Registered users: Bing [Bot], Google [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

Semi-completed Semi-Auto shell gun

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

Unread postAuthor: TwitchTheAussie » Fri Jun 29, 2007 2:06 am

Now that just looks cool :twisted: With your permission hamsterdam I'd like to add it to my marble gun
  • 0

Raise your horns if you love metal.
spudgunning is like sex, once you've tasted, you can't wait til next time.
-
CpTn_lAw
User avatar
TwitchTheAussie
Brigadier General
Brigadier General
 
Posts: 980
Joined: Tue Feb 06, 2007 3:23 am
Reputation: 0

Unread postAuthor: From_Hamsterdam » Sat Jun 30, 2007 11:11 am

Are you in the U.S. or from Hamsterdam?

I could offer some parts in trade if you would be willing to build one of your semis to fire my 40mm rounds. I have pressure chambers and shells ready to go.

i am from Western Australia so bit far for a trade. i don't know if it will work with larger/heavier shells because the spring needs to push them up the mag and out the gun. you would need some powerful springs or maby a small pneumatic ram.
if you have access to a lathe i am sure it is possible to build a much better gun.

i might be able to draw up some plans and send them to you. but i don't know if i can get access to a drawing program any time soon because i am not at Tafe any more and haven't found a job yet.

if building this some things to take in to account are;
-terrible air flow due to "probe" (purple thingy on diagram) restricting it.
-air loss through gaps between barrel/shell and bolt/shell. loss of pressure behind ammo due to bolt moving back.
-a larger chamber is needed so it will work at lower pressures.

Now that just looks cool With your permission hamsterdam I'd like to add it to my marble gun

Permission granted. post a link to your marble gun.

feel free to use this design just don't clame it as your own.
  • 0

Quote:"What if the Kangaroo's where explosives?"

From_Hamsterdam
Staff Sergeant
Staff Sergeant
 
Posts: 110
Joined: Thu Feb 15, 2007 8:26 pm
Reputation: 0

Unread postAuthor: iknowmy3tables » Sat Jun 30, 2007 9:41 pm

very nice I would like to say tiz dis es very nice, and yes I am back from long journey in elmira, NY fix'n houses.
  • 0


iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Unread postAuthor: iknowmy3tables » Sun Jul 01, 2007 7:45 pm

some things I'd like to say the mag spring should be custom made from music wire, you ought to try my semi blowgun method on this

and a blow forward might work better because the force will push a decent seal on the cartridge and feeder
  • 0


iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Unread postAuthor: From_Hamsterdam » Sun Jul 01, 2007 9:18 pm

i did like your semi blow gun idea but i will wait until i get a compressor before i attempt this.

i don't know is custom springs will work because it needs to be able to fling the shell out and they might not be springy enough.

it is a blow forward, i am using a bigger chamber now so the leaks are not a big problem and are mostly caused by my inability to cut in a straight line on the front/back of the shells. also it happens so fast when shooting it is almost imposable to tell if it leaks
  • 0

Quote:"What if the Kangaroo's where explosives?"

From_Hamsterdam
Staff Sergeant
Staff Sergeant
 
Posts: 110
Joined: Thu Feb 15, 2007 8:26 pm
Reputation: 0

Previous

Return to General Spud Cannon Related

Who is online

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

Reputation System ©'