Search found 1731 matches

by Moonbogg
Tue Mar 29, 2022 9:11 pm
Forum: Pneumatic Cannons
Topic: Throwbag Cannon
Replies: 7
Views: 6953

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: 2548

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: 4974

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: 6816

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: 6816

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: 4044

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: 11100

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.
by Moonbogg
Wed Nov 10, 2021 2:32 pm
Forum: Pneumatic Cannons
Topic: Designing a inline piston pressure regulator - Fluid statics math model
Replies: 19
Views: 11100

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

Personally, I have only made hybrid cannons and I never had to understand how a pressure regulator works, so I don't know how a pressure regulator works. The ignorance isn't by accident. When I can, I let the rest of the world do the thinking and heavy lifting for me. The pistons in a hybrid are ver...
by Moonbogg
Tue Nov 09, 2021 6:02 pm
Forum: Pneumatic Cannons
Topic: Designing a inline piston pressure regulator - Fluid statics math model
Replies: 19
Views: 11100

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

That's a lot of work to go over. Not sure you'll get many bites to be honest.
by Moonbogg
Mon Nov 08, 2021 7:09 pm
Forum: Pneumatic Cannons
Topic: Air Cannon Design Help
Replies: 4
Views: 3093

Re: Air Cannon Design Help

Download GGDT (gas gun design tool) and use it to model the cannon's performance. Look around in the pneumatic cannon section for design ideas. I'd imagine a piston cannon would be a good choice. Air is thick and soupy, so a large enough piston is needed to avoid choking the thing off, maybe around ...
by Moonbogg
Tue Nov 02, 2021 10:41 pm
Forum: Pneumatic Cannons
Topic: Air Cannon Design Help
Replies: 4
Views: 3093

Re: Air Cannon Design Help

What's your budget?
by Moonbogg
Mon Nov 01, 2021 7:19 pm
Forum: Ammo & Parts
Topic: Source for Thin wall 1.5" pipe
Replies: 5
Views: 8418

Re: Source for Thin wall 1.5" pipe

Oh, apparently I read ping pong ball but my brain saw golf ball.
by Moonbogg
Sat Oct 30, 2021 4:16 pm
Forum: Ammo & Parts
Topic: Source for Thin wall 1.5" pipe
Replies: 5
Views: 8418

Re: Source for Thin wall 1.5" pipe

I use 1 1/2" SCH10 aluminum pipe for golf balls. It's basically perfect.
by Moonbogg
Fri Oct 29, 2021 6:00 pm
Forum: Ammo & Parts
Topic: Does Ice Bullets Actually Work?
Replies: 7
Views: 16134

Re: Does Ice Bullets Actually Work?

I'll give it a google to find out. I think you'd have to try it out yourself. Also, if you were going to use them you'd have to carry around a freezer with you, right? Remove bullet from freezer, quickly load and FIRE! I think it would just shatter into dust and water vapor if shot from a real gun, ...
by Moonbogg
Tue Oct 12, 2021 10:12 pm
Forum: Pneumatic Cannons
Topic: Latest Eclipse Defense 37mm Pneumatic
Replies: 9
Views: 8344

Re: Latest Eclipse Defense 37mm Pneumatic

The legend returns! Looking nice, Solar. I hope to see some video action at some point.