Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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High-PSI
- Specialist 2
- Posts: 231
- Joined: Sat Oct 09, 2010 7:43 pm
- Location: Nothern Illinois
Sat Oct 23, 2010 3:30 pm
saefroch wrote:High-PSI wrote:Oh, I fired my gun on video (just as a test rig with no grip). Funny thing, it was freakin LOUD, but the video just records a very quiet "Snap" sound. Strange.
I think either your camera or computer is adjusting the recorded volume, I've had this happen to me before and am almost certain that's the cause. I don't know that you can do anything about it, sadly.
Yeah, annoying........
This thing was really, REALLY LOUD! It did not hurt my ears. But, I could only imagine what this much pressure would sound like coming from a 2 inch cannon.
One other thing that is funny, the pressure of the cannon firing moved a bunch of things in the room (it was fired in a storage room in my house). A exercise trampoline that was leaning up against the wall wavered quite a bit as the cannon fired next to it. A few things at the rear of the room blew around too.
I still find it cool that my Chrony actually blew back a few inches when it fired even though the muzzle was 5 feet away.
Matt
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Technician1002
- Captain
- Posts: 5189
- Joined: Sat Apr 04, 2009 11:10 am
Sat Oct 23, 2010 4:29 pm
I took my 2 inch back to the shop to show the guy that gave me the tank. I told him I could probably move his air impact wrench from 3 feet away. He said it was too heavy, but I could try. With no barrel, we blew it 6 feet across the floor from 3 feet away. It was loud. I think he was impressed.
Automatic Volume control on many camcorders do limit the recording of the loud bursts. About the only fix is to use a separate audio recorder with full manual level control and then replace the camcorder audio in post production.
For a full manual recording I use a mixer and a A/D converter with Audacity. Most of the recording will be at low level so the peak is not clipped.
Some cheap microphones for computers will clip loud sounds as the pre-amp can not handle the high levels.
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High-PSI
- Specialist 2
- Posts: 231
- Joined: Sat Oct 09, 2010 7:43 pm
- Location: Nothern Illinois
Sat Oct 23, 2010 4:35 pm
Cool.
So, I just aired the 1-1/4 inch cannon to 230psi and dry fired it to see how it would sound with just air alone. Wow, talk about LOUD! Also, the recoil was tremendous. When I fired the test slug at 200psi, I had the cannon braced against an upright freezer, so I did not feel the recoil. However, I felt the recoil firing only air. My Goodness! Wow, I cannot wait to try my big 2 inch cannon. Now, I see what you guys mean when you say a 2 inch is hard to handle above 100psi.
Matt