As you may notice, quite a bit looks different! SpudFiles has now entered the modern era of technology. Please see yourself around and let me know of any questions or troubles you encounter. A few major items... -Previous [youtube] tags will be found left in posts, but videos will remain visible. Yo...

Excellent item to bring up! I received a PM about this too. One of the biggest pitfalls (in the past) with big upgrades to SpudFiles is that oftentimes the fun "spudbux" to "reputation" points vanish. These features are not native to the forum software, they were manually added in by me (and friendl...

Describe what you feel would be the ultimate potato cannon. Bore size, pneumatic or combustion, power class, features such as spud cutting and breach loading, ease of use should be very important as well, etc etc. Consider all you have seen and learned from this hobby over the years and use your min...

Okay heres a weird question that will probably be obvious in hindsight. I think it would make sense but lemme ask you guys: So obviously there is such a thing as too tight of a barrel for a given projectile. Unless you have a pretty massive air chamber, once you start having to hammer down a project...

I'm on a Nerf thing at the moment so converted it to Nerf Rival with a ball valve for loading and 3/4" copper barrel.

Howdy Gents! Don't remember the last time I signed into the files and made a post. Honestly, I'm surprised I even remembered my pword :lol: Interested to see who all is still active on here from the old days! @PCGuy I like what you've done with the place! Anywho, I want to drop a quick thanks to eve...

Welcome to the forum! You can find them here, for a combustion spud gun you want HGDT:

viewtopic.php?p=387228#p387228

You can search these forums for "honking" for a number of posts about the problem.
There is also a brief page on the wiki at spud_wiki/index.php?title=Honking and spud_wiki/index.php?title=Sprinkler_valve_modification

If you have the same air volume and the chamber is 1/3 the volume, the pressure will increase by 3x.

https://www.omnicalculator.com/physics/boyles-law

Wishing you many sharp reports!

Can you legally purchase this book in California? Or this one , or this ? If so, I doubt you could be prosecuted for simply drawing something. I mean you could also design a full auto assault rifle, but you wouldn't worry about being prosecuted for that. For reference and historical purposes only. V...

When viewing posts... the "default" is on the right, which is how it is right now. I had it on the left a few months ago, but did a software upgrade that moved it back to the right. There is a small amount of customization I must do to continue to keep it on the left and have that persist through fo...

I was contemplating about making a coaxial type air cannon design but I had a thought about the pressure rating. We know that certain pipes has been factory tested to withstand a certain amount of pressure inside of it. But what if that pressure is being applied outside of it? That's basically what'...

yes, PVC starts to decay as soon as it is made I read, UV is a real killer.

See link with external pressure ratings for PVC. They call it "critical collapse" pressure ratings. You can compare the critical collapse rating with the internal pressure rating. Critical collapse ratings: https://www.usplastic.com/knowledgebase/article.aspx?contentkey=777 Compare those figures to ...