Search found 94 matches
- Sun Feb 24, 2019 4:06 pm
- Forum: Pneumatic Cannons
- Topic: preloaded pneumatic cartridge
- Replies: 338
- Views: 205222
Re: preloaded pneumatic cartridge
Interesting, my only concern is that since the o-rings have a large diameter, even though they are balanced there will be considerable friction at higher pressures so a larger force will be needed to actuate the cartridge. Yes, it is probably as you say. I thought about using it at about 15 bar whi...
- Sun Feb 24, 2019 1:40 pm
- Forum: Pneumatic Cannons
- Topic: preloaded pneumatic cartridge
- Replies: 338
- Views: 205222
Re: preloaded pneumatic cartridge
Interesting, my only concern is that since the o-rings have a large diameter, even though they are balanced there will be considerable friction at higher pressures so a larger force will be needed to actuate the cartridge. Yes, it is probably as you say. I thought about using it at about 15 bar whi...
- Sun Feb 24, 2019 1:31 pm
- Forum: Hybrid Cannons
- Topic: Want to build my first hybrid
- Replies: 12
- Views: 5460
Re: Want to build my first hybrid
Я могу помочь.Я уже делал гибриды,даже не один,увлекался этим. Напиши https://vk.com/id111087416Vadim wrote:Well, you probably right. Thank you for advice!
- Fri Feb 08, 2019 12:51 pm
- Forum: Hybrid Cannons
- Topic: hectmarr's Semi-Auto Hybrid - Theory of Operation
- Replies: 19
- Views: 8958
Re: hectmarr's Semi-Auto Hybrid - Theory of Operation
I agree that using the projectile as a "burst disk" in a detent would probably be the simplest way to implement this. Any energy spent moving the piston is energy that is lost. The critical part would be ensuring that the projectile is more or less airtight so that no gas can flow around it. Here i...
- Fri Jan 25, 2019 2:06 pm
- Forum: Pneumatic Cannons
- Topic: Help finding a valve for my airgun
- Replies: 8
- Views: 3961
Re: Help finding a valve for my airgun
Hello I want to make a airgun that uses a solenoid valve. I have looked for an hour but I can't find a valve that will fit my needs. I need a valve that can withstand 300 bar, open quickly, and run off of 12 volts. Thanks for helping me out I am a huge noob when it comes to this stuff but I really ...
- Thu Dec 20, 2018 2:43 pm
- Forum: Pneumatic Cannons
- Topic: Balanced Hammer Valves
- Replies: 19
- Views: 17908
Re: Balanced Hammer Valves
I tried to make a balanced valve and I did it. The flow area in the valve is now 8.5 mm, piston diameter 7 mm. Such a valve opens with a light drummer and soft spring, tested at a pressure of 70 atm. The lead ball after the shot went into the board by 30 mm, the air in the tee is enough for 2 shots.
- Mon Dec 10, 2018 12:08 pm
- Forum: Combustion Cannons
- Topic: Self Contained Hydrogen Repeater
- Replies: 30
- Views: 16157
Re: Self Contained Hydrogen Repeater
At what pressure does the hho compress the combustion chamber? Or shoot at atmospheric pressure? I ask because I can not understand anything in the video. In the future I will try to learn the Russian language, apart from English, (and my own better one). :shock: It would be good to see the physical...
- Sun Dec 09, 2018 2:17 pm
- Forum: Combustion Cannons
- Topic: Self Contained Hydrogen Repeater
- Replies: 30
- Views: 16157
Re: Self Contained Hydrogen Repeater
I also did the hydrogen gun. The sound of the shot is very sharp and strong, but the bullet flies slowly. Perhaps this is because the tank is small.
[youtube][/youtube]
[youtube][/youtube]
- Tue Nov 20, 2018 10:20 am
- Forum: Pneumatic Cannons
- Topic: PNEUMATIC GUN WITH VALVE QEV
- Replies: 5
- Views: 5374
Re: PNEUMATIC GUN WITH VALVE QEV
wow, this is a gun!The first time I see this!
- Mon Nov 19, 2018 2:50 am
- Forum: Pneumatic Cannons
- Topic: PNEUMATIC GUN WITH VALVE QEV
- Replies: 5
- Views: 5374
PNEUMATIC GUN WITH VALVE QEV
Made a gun of 40 mm caliber, used a piston valve. The gun works well at pressures up to 20 atm, no longer possible, because the rubber on the piston is torn.
[youtube][/youtube]
here is an approximate diagram of the valve. Used a coarse water filter.
[youtube][/youtube]
here is an approximate diagram of the valve. Used a coarse water filter.
- Fri Nov 16, 2018 2:41 pm
- Forum: Pneumatic Cannons
- Topic: pneumatic spearguns...
- Replies: 19
- Views: 11858
Re: pneumatic spearguns...
I plan to make just such a pneumatics. There won't be much of a rock, 20-40 atm, depending on the diameter of the pump rod. Perhaps the pump handle will play the role of fits. I know that this is not the most effective scheme, but it must be done.
- Thu Nov 15, 2018 1:43 pm
- Forum: Pneumatic Cannons
- Topic: Mechnanically locked spool valve
- Replies: 4
- Views: 2226
Re: Mechnanically locked spool valve
warm, only -5, snow. I understand that the flow section should be more, but this requires large parts, they are expensive, but I can not afford to spend a lot of money on a hobby. And further. Was everything okay with the site? From 07 to 15 November, I could not create a topic, could not answer, ga...
- Thu Nov 15, 2018 12:20 pm
- Forum: Pneumatic Cannons
- Topic: Mechnanically locked spool valve
- Replies: 4
- Views: 2226
Re: Mechnanically locked spool valve
I thank for the scheme, I just experiment with a large caliber. I make a valve with a large flow area
[youtube][/youtube]
[youtube][/youtube]
- Tue Nov 06, 2018 12:09 pm
- Forum: Off-Topic Hobbies
- Topic: Help name the valve
- Replies: 6
- Views: 6022
Re: Help name the valve
Please give links to sites similar to this one. It is necessary that it would be discussed precisely homemade pneumatic gun, very interesting. I could find it myself, but because of the language barrier I always get to the sites with industrial pneumatics, it’s not interesting, I can read it too. I ...
- Tue Nov 06, 2018 12:01 pm
- Forum: General How-To & Discussion
- Topic: "In the world of spuds today"
- Replies: 2461
- Views: 1586075
Re: "In the world of spuds today"
Theory and development is listed in this thread with plenty of other designs and configurations discussed.[/quote] In minute 0, 34 of the video the ammunition hitting the target sound better than my drummer! :shock: jajajajaja :bounce:[/quote] [youtube]https://youtu.be/IBdYoMJ4SoA[/youtube] I also d...