Login    Register
User Information
We are a free and open
community, all are welcome.
Click here to Register
Who is online

In total there are 72 users online :: 3 registered, 1 hidden and 68 guests

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

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot] based on users active over the past 5 minutes

The Team
Global Moderators
global_moderators.png CS

Design Conception

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

Design Conception

Unread postAuthor: B-Yonts » Thu Aug 10, 2017 11:53 am

I am working to build my first potato cannon. It will be used to conduct impact testing, and will be stationary so weight isn't an issue. It will be built from copper or aluminum, any suggestions on which would be greatly appreciated. I need at minimum a 2" barrel and it will be pneumatically powered. I have a basic design with a chamber being 5' and barrel being 4'. I don't need anything fancy, but am looking to use a store bought quick exhaust valve and a ball valve. However, I am still working to understand how these components could work together. Any advice or direction is greatly appreciated.
  • 0

Posts: 1
Joined: Thu Aug 10, 2017 11:46 am
Country: United States (us)
Reputation: 0

Re: Design Conception

Unread postAuthor: jackssmirkingrevenge » Sat Aug 12, 2017 5:29 am

Welcome to the forum!

If it's for a static large bore rig, a burst disk might be a better option as store bough valves will get pricey.

Something like this:


Your chamber and and barrel are separated by a union in which you have a disk of frangible material sealing off the chamber. In order to fire, you pressurize the chamber until the pressure become too great for the disk to contain it causing it to rupture.

This will give you maximum power for minimum cost, it takes slightly longer to set up than a re-settable valve but for your purposes this should not be an issue.
  • 1

hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Donating Member
Donating Member
Posts: 24968
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 119

Return to General Spud Cannon Related

Who is online

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot]

Reputation System ©'