Search found 1551 matches

by Moonbogg
Thu Sep 05, 2019 10:28 am
Forum: General How-To & Discussion
Topic: New Guy
Replies: 10
Views: 1788

Re: New Guy

Welcome! Those are some amazing plans. A lot of work involved, that's for sure. Your changes seems fine to me. Keep us posted on your progress and good luck!
by Moonbogg
Fri Aug 23, 2019 6:42 pm
Forum: Hybrid Cannons
Topic: Two-stage hybrid
Replies: 32
Views: 4543

Re: Two-stage hybrid

Whoa, this thing is complicated. Would be so awesome if it worked!
by Moonbogg
Mon Aug 19, 2019 7:56 pm
Forum: Hybrid Cannons
Topic: Timing a Piston Valve Hybrid Cannon and Barrel Material
Replies: 3
Views: 950

Re: Timing a Piston Valve Hybrid Cannon and Barrel Material

A hybrid piston's opening pressure is determined by how much air pressure you pump behind it. I'm more interested in how you are matching the shape of that egg so perfectly that it won't break upon firing. The sabot has to match the contour of the egg perfectly, right? Otherwise it breaks upon firin...
by Moonbogg
Sun Aug 18, 2019 1:14 pm
Forum: Hybrid Cannons
Topic: Two-stage hybrid
Replies: 32
Views: 4543

Re: Two-stage hybrid

I'm enjoying this thread. I like the input from a variety of people. Reminds me of the good old days when the forums were more active and people got excited about new ideas. I hope this things works. Might I suggest safety glasses, some thin leather gloves and perhaps a safety T-shirt...
by Moonbogg
Sat Aug 17, 2019 2:28 pm
Forum: Pneumatic Cannons
Topic: spool valve design. primary intention: paintball
Replies: 3
Views: 550

Re: spool valve design. primary intention: paintball

That's a really clever design. I like it! Nice work as well. Very interesting.
by Moonbogg
Fri Aug 16, 2019 10:00 pm
Forum: Hybrid Cannons
Topic: Two-stage hybrid
Replies: 32
Views: 4543

Re: Two-stage hybrid

That all makes sense. I can see the convenience of doing this to enable more power. It would be a real innovation in this hobby if you made something like this. I don't think I've ever heard of one before and certainly haven't seen one.
by Moonbogg
Fri Aug 16, 2019 9:55 pm
Forum: Pneumatic Cannons
Topic: Battery Gun
Replies: 7
Views: 611

Re: Battery Gun

I just watched it. It's awesome. It slings a battery pretty damn fast. Nice work.
by Moonbogg
Fri Aug 16, 2019 5:50 pm
Forum: Pneumatic Cannons
Topic: Battery Gun
Replies: 7
Views: 611

Re: Battery Gun

One of my first launchers was a battery launcher. I used sprinkler valves with battery operated solenoids. Performance was garbage, but it was fun. It was a fun thing and you also have a fun thing. I'd like to see yours work.
by Moonbogg
Fri Aug 16, 2019 5:45 pm
Forum: Hybrid Cannons
Topic: Two-stage hybrid
Replies: 32
Views: 4543

Re: Two-stage hybrid

Predicting it's behavior would be complicated and difficult, but I can see this possibly working. It's funny to see this because I had a similar idea except I thought about using a hand crank to compress the chamber B side. A gear reduction and a worm gear or ACME thread with a piston to compress th...
by Moonbogg
Sat Aug 10, 2019 6:51 pm
Forum: Hybrid Cannons
Topic: HELP ME ESTIMATE THE DISTANCE OF THESE SHOTS
Replies: 5
Views: 1135

Re: HELP ME ESTIMATE THE DISTANCE OF THESE SHOTS

I think it's BLM land where I go, but I've never actually looked for a truly isolated spot. Your idea sounds good and I might end up doing that, but I won't want to go alone and without a good medical kit to stop the bleeding at a minimum. I have only one concern that is on my mind and is partially ...
by Moonbogg
Thu Aug 08, 2019 8:58 pm
Forum: Off-Topic Hobbies
Topic: Built a SUB (stand up bike)
Replies: 5
Views: 1509

Re: Built a SUB (stand up bike)

Whoa, I've never heard of a stand up bike before. Nice work for sure. Are they hard to ride?
by Moonbogg
Mon Aug 05, 2019 4:09 pm
Forum: General How-To & Discussion
Topic: Water pressurized spud gun?
Replies: 4
Views: 1192

Re: Water pressurized spud gun?

The water from your hose can be used to displace the air in a chamber and pressurize it. The air pressure is limited to your water pressure coming from the hose. You would only do this if you didn't have a bike pump or air compressor.
by Moonbogg
Fri Aug 02, 2019 1:08 pm
Forum: Hybrid Cannons
Topic: HELP ME ESTIMATE THE DISTANCE OF THESE SHOTS
Replies: 5
Views: 1135

Re: HELP ME ESTIMATE THE DISTANCE OF THESE SHOTS

Using Trig sounds like a fun way to do it. Good ideas! Also, you're right about not being able to simply pace it out. It's not safe to walk that far out since it's an open range.
by Moonbogg
Fri Aug 02, 2019 1:13 am
Forum: Hybrid Cannons
Topic: HELP ME ESTIMATE THE DISTANCE OF THESE SHOTS
Replies: 5
Views: 1135

HELP ME ESTIMATE THE DISTANCE OF THESE SHOTS

Not much to work with, but you can see the impact of the first shot just above the propane bottle. 8 OZ soda cans at 3X, approx 30deg angle (you can judge angle yourself from video), approx 5 second flight time. My guess is maybe 200 yards? Maybe 250? [youtube]https://youtu.be/UvQ_2btZp58[/youtube]
by Moonbogg
Thu Jul 25, 2019 1:57 pm
Forum: General How-To & Discussion
Topic: Water pressurized spud gun?
Replies: 4
Views: 1192

Re: Water pressurized spud gun?

Water is an incompressible fluid, so I'm not sure there is any way to use it to fire a potato. I think A water rocket uses the mass of the heavy water as a means of thrust. In a spud gun, you want the spring action of the compressed air to all act on the potato. If the energy is used to also shoot o...