Search found 1709 matches

by Moonbogg
Fri Jul 29, 2022 3:04 pm
Forum: Ammo & Parts
Topic: Great video testing spud gun failure/safety (ThebackyardScientist)
Replies: 4
Views: 1174

Re: Great video testing spud gun failure/safety (ThebackyardScientist)

Watching a piece of 3" PVC hold until 1000psi+ makes me wonder what it would take to cause my aluminum cannon to burst. I'm starting to think 3.5X combustions just might not have the energy to cause that thing to come apart.
by Moonbogg
Mon Jul 25, 2022 9:44 pm
Forum: SpudFiles Discussion
Topic: Can't believe this site is still going
Replies: 4
Views: 1151

Re: Can't believe this site is still going

Am present. I made a new cannon in 2019 I think it was, and it was quite a project. The site is very low in activity, the glory days of spudding seems to have been in the 90's and early 2000's. Spudding will always have a special place in my heart and I have two special cannons that I will either le...
by Moonbogg
Mon Jul 25, 2022 9:36 pm
Forum: Ammo & Parts
Topic: Great video testing spud gun failure/safety (ThebackyardScientist)
Replies: 4
Views: 1174

Great video testing spud gun failure/safety (ThebackyardScientist)

https://www.youtube.com/watch?v=KqstP9ics2A Great video. He tested hydro testing to failure with PVC and it has enough POP to hurt someone for sure. Not sure if there was air in the line behind the water, but an interesting result. Lots of cool PVC failure testing specifically with spud guns in mind.
by Moonbogg
Fri May 27, 2022 6:04 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Steel galvanized pipes as pcp rifle air chamber
Replies: 4
Views: 838

Re: Steel galvanized pipes as pcp rifle air chamber

At pressures that high, I would definitely buy something rated for it. I'd be too paranoid to enjoy using the thing. Aren't those galvanized steel caps casted? I don't like the idea of casted, crappy threads. If I was designing a hand-held device for 1500psi I'd actually design it for like 10,000psi...
by Moonbogg
Wed May 04, 2022 2:25 am
Forum: Hybrid Cannons
Topic: Hybrid pumped weapon project
Replies: 12
Views: 1542

Re: Armadas 1500 II (hybrid pump rifle)

That is really clean and very nice. I love that it's a hybrid. So awesome. Nice job!
by Moonbogg
Sun Apr 03, 2022 7:39 pm
Forum: Pneumatic Cannons
Topic: Food Mold-Gas pneumatic build
Replies: 6
Views: 1370

Re: Food Mold-Gas pneumatic build

Lasagna cannon fired while in oven.
by Moonbogg
Sat Apr 02, 2022 5:35 pm
Forum: Pneumatic Cannons
Topic: Food Mold-Gas pneumatic build
Replies: 6
Views: 1370

Re: Food Mold-Gas pneumatic build

It was an April fools joke. Teehee
by Moonbogg
Fri Apr 01, 2022 2:57 pm
Forum: Pneumatic Cannons
Topic: Food Mold-Gas pneumatic build
Replies: 6
Views: 1370

Food Mold-Gas pneumatic build

I'm nearing the design completion of a mold-gas pneumatic build. It has a larger than typical pressure chamber and a large cleanout-style threaded plug at one end. You fill the chamber with sourdough bread starter and cheese and wait for gasses to build then fire the cannon. I know the rate of fire ...
by Moonbogg
Tue Mar 29, 2022 9:11 pm
Forum: Pneumatic Cannons
Topic: Throwbag Cannon
Replies: 7
Views: 1702

Re: Throwbag Cannon

PVC vs ABS crush test


PVC air pressure failure


ABS air pressure failure


ABS wins.
by Moonbogg
Mon Mar 28, 2022 2:51 pm
Forum: Pneumatic Cannons
Topic: Looking for design feedback
Replies: 1
Views: 705

Re: Looking for design feedback

It looks good to me. Keep us updated!
by Moonbogg
Mon Mar 28, 2022 2:45 pm
Forum: Pneumatic Cannons
Topic: A bit of Nerf fun
Replies: 4
Views: 1200

Re: A bit of Nerf fun

300fps is at the upper end of hardcore nerf performance. That's awesome.
by Moonbogg
Wed Mar 23, 2022 7:05 pm
Forum: General How-To & Discussion
Topic: tennis ball gun for my dog
Replies: 8
Views: 1459

Re: tennis ball gun for my dog

Yeah I'd just buy one of those things for sure.
by Moonbogg
Tue Mar 08, 2022 10:24 pm
Forum: General How-To & Discussion
Topic: tennis ball gun for my dog
Replies: 8
Views: 1459

Re: tennis ball gun for my dog

Anatine Duo wrote:
Mon Mar 07, 2022 11:44 am
How does your dog aim it?
Come on man. That's not what he meant and you know it. He said "tennis ball gun for my dog", so clearly what he's looking for is a gun made out of tennis balls that he will launch his dog from.
by Moonbogg
Fri Mar 04, 2022 1:58 pm
Forum: Combustion Cannons
Topic: GoldGolfBallGun Progress
Replies: 1
Views: 715

Re: GoldGolfBallGun Progress

It looks beautiful! Excellent job.
by Moonbogg
Fri Nov 19, 2021 2:40 am
Forum: Pneumatic Cannons
Topic: Designing a inline piston pressure regulator - Fluid statics math model
Replies: 19
Views: 4857

Re: Designing a inline piston pressure regulator - Fluid statics math model

You can use X-shaped o-rings to reduce friction. I use them on my piston with standard o-ring compression and I can easily move the piston by pushing it with one finger.