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I use a similar procedure to analyze my springer mods. I put the microphone right up to the compression tube and pull the trigger:
http://s3.postimage.org/t5DOr.jpg
Yep, i did fully isolate the w ... |
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| | | | | | | | | Homemade audio chrony | | | | | |
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When you say "piezo element" do you mean a regular crystal microphone element, or some other kind of sensor?
yes, those thing you get if you disassemble a regular PC mic |
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| | | | | | | | | RWS 350 magnum came today | | | | | |
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I am not sure why but my 350 has a lower point of impact at 10y than it does at 20y. Past 20y it seems to follow a normal ballistic trajectory and is easier to adjust for distance.
I have the same ... |
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| | | | | | | | | Homemade audio chrony | | | | | |
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I just did the different pellets again, i think it's clearly defined
http://www.shrani.si/f/2/Cs/3MLVZMcM/pellets.jpg
1: 10.5gr->771 FPS
2: 9.56gr->820FPS
3: 8.3fr->880FPS
P.S. If ... |
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| | | | | | | | | Homemade audio chrony | | | | | |
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I've redesigned the chrony, did some improvements. And i did get some pretty consistent results.
I've tried different settings
I tried a distance of 3.77m:
->0 inches from mic, gave me 880 ... |
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| | | | | | | | | Homemade audio chrony | | | | | |
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| Move your first mic a couple feet from the muzzle. The same thing occurs with optical chronographs, and it is far more pronounced with high-powered 'burners, because of the massive muzzle blasts. Some ... |
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| | | | | | | | | Homemade audio chrony | | | | | |
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Welcome aboard!
25 to 50 fps is a bit much of a spread, but if it's constant then technically it would tell a lot about your rifle.
It can't compete against optical chronographs, but for such a ... |
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| | | | | | | | | Homemade audio chrony | | | | | |
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| So in between the first bar and the second, you are hearing the flight noise coming. Then as the pellet passes, the peaks just after the second bar are the pellet going past the device. And the initia ... |
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| | | | | | | | | Homemade audio chrony | | | | | |
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Could you explain how you measured the velocity using the sound?
I would guess you set up the mics and synchronized them, and measured the time it took for the pellet flight sound to pass between t ... |
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| | | | | | | | | Homemade audio chrony | | | | | |
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Hi everyone,
I've got a RWS Panther 34 with an original spring which is about 2 years old, light to moderate shooting.
Because i'm too much of a cheapstake to spend the 100$ on a chrony but i ... |
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