Search found 1608 matches

by Moonbogg
Tue Sep 22, 2020 9:41 pm
Forum: Pneumatic Cannons
Topic: Supersonic baseball cannon on 'Smarter Every Day'
Replies: 1
Views: 138

Re: Supersonic baseball cannon on 'Smarter Every Day'

I saw that video. It's completely awesome! It's the ultimate pneumatic cannon and pushes the performance to the extreme by doing a variety of special things to get there. I loved it. I wonder how a hybrid cannon would do. I'm thinking a simpler and cheaper hybrid could be made that would out perform...
by Moonbogg
Thu Sep 10, 2020 4:55 pm
Forum: Combustion Cannons
Topic: An Attempt at Comparing Different Spud Guns!
Replies: 1
Views: 141

Re: An Attempt at Comparing Different Spud Guns!

LOL. Cool video! If you want to blow your own mind, build a metered propane cannon with a chamber fan. Probably get around 120 meters per second with pretty much perfect reliability.
by Moonbogg
Thu Sep 10, 2020 4:44 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Let's talk nerf blasters
Replies: 4
Views: 213

Re: Let's talk nerf blasters

I bought the Ceda S and just shot it across the living room. Hoooly crap! I knew what to expect in terms of FPS from reviews online, but I was still totally surprised at how fast it shoots. My kid's nerf blasters just sort of float the dart across the room, and this thing rockets them in a straight ...
by Moonbogg
Sun Sep 06, 2020 4:15 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Let's talk nerf blasters
Replies: 4
Views: 213

Let's talk nerf blasters

So anyway, here I am wanting a nerf gun. My kids bought some and now I want one! But I want a more powerful one. Anyway, I might do some modding at some point, but I'm looking for the best performance out of the box. I've narrowed it down to 3, but sadly, one is out of stock. #1 - Dart Zone Pro Mk 1...
by Moonbogg
Tue Sep 01, 2020 3:19 pm
Forum: Pneumatic Cannons
Topic: Valve jam with liquid gas
Replies: 13
Views: 294

Re: Valve jam with liquid gas

Some pictures would help me to think..
by Moonbogg
Tue Sep 01, 2020 2:07 pm
Forum: Pneumatic Cannons
Topic: Valve jam with liquid gas
Replies: 13
Views: 294

Re: Valve jam with liquid gas

I'm wondering if temperature could be the culprit. I imagine the propane being cold, and maybe it causes the piston housing to shrink while the piston itself has a different coefficient of thermal expansion, causing it to shrink less than the housing? If there are o-rings, they might stiffen as well...
by Moonbogg
Mon Aug 31, 2020 6:39 pm
Forum: Pneumatic Cannons
Topic: Valve jam with liquid gas
Replies: 13
Views: 294

Re: Valve jam with liquid gas

I'd use air personally for a pneumatic. Do the issues arise when using air?
by Moonbogg
Sat Aug 29, 2020 12:41 am
Forum: Pneumatic Cannons
Topic: Valve jam with liquid gas
Replies: 13
Views: 294

Re: Valve jam with liquid gas

Any chance of some pictures and a description of how it works?
by Moonbogg
Sat Aug 22, 2020 7:47 pm
Forum: Hybrid Cannons
Topic: Autonomous pistol .22
Replies: 5
Views: 342

Re: Autonomous pistol .22

Beautiful work!
by Moonbogg
Sat Aug 08, 2020 1:59 pm
Forum: Hybrid Cannons
Topic: Cooking up a little something...
Replies: 79
Views: 14026

Re: Cooking up a little something...

A streamlined projectile could be interesting. I think the mass would have to be relatively low and use a sabot, like a dart or something. Could possibly go supersonic with some effort. It would be interesting to see how much pressure is needed to push past the sound barrier with a golf ball. I know...
by Moonbogg
Fri Aug 07, 2020 5:19 pm
Forum: General How-To & Discussion
Topic: Nerf Air Restricter like Piston Valve
Replies: 1
Views: 238

Re: Nerf Air Restricter like Piston Valve

These types of cannons generate high pressures and have to consist of strong metal construction. PVC or any other plastic will explode. The concept works. Several of us have built cannons like this with good results. The performance benefit is huge and the spring force doesn't take away from the per...
by Moonbogg
Mon Jul 20, 2020 7:56 pm
Forum: Off-Topic Hobbies
Topic: I'm not photographer but....
Replies: 4
Views: 1250

Re: I'm not photographer but....

Those are amazing pics. Imagine the journey that comet has been on and the story it would tell if it could.
by Moonbogg
Sun Jul 19, 2020 2:21 pm
Forum: General How-To & Discussion
Topic: JSR's workshop chronicles
Replies: 32
Views: 7662

Re: JSR's workshop chronicles

Those are beautiful.
by Moonbogg
Mon Jul 13, 2020 7:13 pm
Forum: Off-Topic Hobbies
Topic: "Offtopic-posts-topic" NSFW
Replies: 6630
Views: 270676

Re: "Offtopic-posts-topic" NSFW

SpudBlaster15, I'm dying to know what you have in mind. Spill the beans! I don't have access to much space at the moment and it has been a long time since I touched any spudgun related building materials and tools, so I might just throw together a quick, easy QEV pneumatic to see if I can jumpstart...
by Moonbogg
Mon Jul 13, 2020 4:34 pm
Forum: Off-Topic Hobbies
Topic: "Offtopic-posts-topic" NSFW
Replies: 6630
Views: 270676

Re: "Offtopic-posts-topic" NSFW

Daltonultra, I don't recall seeing that thing. It's an absolute monster! That thing can really chuck a can. I'm working on a new design and I was going to make it big enough to launch soup cans, but I decided to make another soda can launcher. I already have a soda can launcher though, so maybe I sh...