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Suppressor/Silencer Question
Self ^ | 17 Jun 10 | Self

Posted on 06/17/2010 9:54:53 AM PDT by OneWingedShark

Yesterday I came across a really intriguing firearm.

The De Lisle Silent Carbine which has an integrated silencer…; while some might quibble over my usage of the term ‘silencer’ instead of ‘suppressor’ I should think that the De Lisle qualifies as the former.


Now, I’ve been thinking about firearm design a bit and I think I may try to enter the gun manufacture business should my state pass a Firearm Freedom Act, which brings me back to the point I was contemplating: silencers/suppressors. After a little research on wikipedia about the design of them I was reminded about a valveless “one way” tube (termed Valvular Conduit) developed by Nikola Tesla that I found on a page about jet engines. Depicted below:

So, since I’m no expert on fluid dynamics, my question is could the Valvular Conduit be used as a suppressor? I realize that, as presented, the overlaps in the conduit wouldn’t allow a bullet passage, but consider if that part of the passage were placed inside the grooves of the rifling and offset enough to allow passage of the bullet and oriented such that it opposed gasses escaping from the weapon. Would/could it work? Would it be effective?


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To: Mr. K

Tesla was pretty awesome, though I think my favorite would have to be Blaise Pascal.


21 posted on 06/17/2010 10:08:17 AM PDT by OneWingedShark (Q: Why am I here? A: To do Justly, to love mercy, and to walk humbly with my God.)
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To: fso301

You’d be better off using a heavy/slow cartridge like .300Whisper. Slow a HEAVY bullet below subsonic and a suppressor isn’t needed.


22 posted on 06/17/2010 10:09:21 AM PDT by SJSAMPLE
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To: SJSAMPLE

Watch the linked video: you’ll shit a brick at how quiet it is.


23 posted on 06/17/2010 10:09:55 AM PDT by OneWingedShark (Q: Why am I here? A: To do Justly, to love mercy, and to walk humbly with my God.)
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To: thackney

sounds to me like a recipe for danger- the gasses NOT being allowed to escape could cause the barrel to explode

I have seen and read about Tesla’s device- he was SUCH an amazing man

Many of his inventions are tought to be hidden away by the govt (if you believe in conspiracy like that)

He invented a death ray and a tiny oscillation device that could bring down buildings. One day his experiment went wrong and when the police broke in to find out why the building was shaking itself to pieces they found him trying to destroy it with a sledge hammer because he could not turn it off.

I would have loved to have seen that...


24 posted on 06/17/2010 10:10:09 AM PDT by Mr. K (This administration IS WEARING OUT MY CAPSLOCK KEY!!!!!)
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To: Mr. K

And Edison cheated Tesla out of $50K for improvements he made.

Edison really hurt his image with his treatment and unseemly conduct towards Tesla.


25 posted on 06/17/2010 10:10:25 AM PDT by SJSAMPLE
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To: Mr. K

I have suppressors for all of my firearms, with the exception of revolvers and shotguns of course. My favorite is the AAC Titan that is on my .338 Lapua. Silent and deadly at 1500m.


26 posted on 06/17/2010 10:12:17 AM PDT by P8riot (I carry a gun because I can't carry a cop.)
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To: SJSAMPLE

>Slow a HEAVY bullet below subsonic and a suppressor isn’t needed.

The .45 ACP is generally subsonic by nature. (The temperature mainly determines the speed of sound.)


27 posted on 06/17/2010 10:12:54 AM PDT by OneWingedShark (Q: Why am I here? A: To do Justly, to love mercy, and to walk humbly with my God.)
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To: OneWingedShark

It’s a .45ACP carbine.
.45ACP is already subsonic, so gas moderation is relatively easy, especially for an integral suppressor. However, that round is being slowed down quite a bit to get that sound.

I’ve fired just about all the main suppressors and suppressed weapons, including the MP-5SD and the DeLisle. Rifle cartridges are another thing entirely.


28 posted on 06/17/2010 10:13:23 AM PDT by SJSAMPLE
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To: OneWingedShark

How to build a suppressor. Buy a tubular shaped muffler for small engines. Tap the end of the barrel to permit attaching the muffler to the barrel. Drill out the muffler to accomodate the width (caliber) of the round plus added tolerance. Set weapon up in firing stand and use a string puller to test fire rig. Fire the rig at least 20 times and inspect the muffler, its connection to the barrel for signs of cracking.

The mufflers on your cars are a suppressor. The only difference is with a weapon you are delivering a solid slug through the muffler. The larger the muffler the more sound it can suppress. Finally, if you dip your suppressor into water, the water in gas form will further suppress the sound of the explosion following the bullet.

Don’t know why you are so interested in suppressors.


29 posted on 06/17/2010 10:14:16 AM PDT by equalitybeforethelaw
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To: OneWingedShark

Like I said, SLOW/HEAVY works best.


30 posted on 06/17/2010 10:14:17 AM PDT by SJSAMPLE
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To: P8riot

>I have suppressors for all of my firearms, with the exception of revolvers and shotguns of course.

http://en.wikipedia.org/wiki/Nagant_M1895
If you get one, you can have a revolver that is suppressible!


31 posted on 06/17/2010 10:16:57 AM PDT by OneWingedShark (Q: Why am I here? A: To do Justly, to love mercy, and to walk humbly with my God.)
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To: OneWingedShark

That’s what I’ve heard. Unfortunately it would make me stock another caliber.


32 posted on 06/17/2010 10:18:39 AM PDT by P8riot (I carry a gun because I can't carry a cop.)
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To: laker_dad

“wife made me get rid of my guns years ago...”

You’re kidding? Why? And why did you?


33 posted on 06/17/2010 10:20:37 AM PDT by Retired Greyhound
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To: Retired Greyhound

I think you could’ve stopped at the first question mark.


34 posted on 06/17/2010 10:22:52 AM PDT by P8riot (I carry a gun because I can't carry a cop.)
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To: P8riot

After I posted I thought about it a little more and realized what he was saying.

I’m somewhat gullible.


35 posted on 06/17/2010 10:23:56 AM PDT by Retired Greyhound
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To: Retired Greyhound

Yep, she made me take them 3 miles out into Lake Michigan and throw them overboard... That’s my story and I’m sticking with it :)


36 posted on 06/17/2010 10:25:35 AM PDT by laker_dad
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To: Retired Greyhound

On other forums, the common response is, “I had a boat accident and all my guns were lost.”


37 posted on 06/17/2010 10:25:47 AM PDT by SJSAMPLE
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To: equalitybeforethelaw

>Don’t know why you are so interested in suppressors.

Because NM is really great for it’s permissiveness of firearms and attendant accessories; if it were to pass the FFA I would like to be able to offer weapons with integrated suppressors.

And, being New Mexico, I would love the irony of owning a firearms company named “Iron River.”
http://www.reuters.com/article/idUSN1223853620070713
http://www.foxnews.com/story/0,2933,258270,00.html


38 posted on 06/17/2010 10:27:13 AM PDT by OneWingedShark (Q: Why am I here? A: To do Justly, to love mercy, and to walk humbly with my God.)
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To: Mr. K
I would have loved to have seen that...

Wouldn't seeing that mean being in the building at the time it was being shaken to pieces?

This is also claimed as an untrue urban myth. Myth-busters failed to replicate anything close to the magnitude when they replicated. You can reach resonant frequency of any member in the building, but almost no members have the exact same resonant point unless they are exactly the same with the exact same load and connection points.

39 posted on 06/17/2010 10:28:41 AM PDT by thackney (life is fragile, handle with prayer)
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To: SJSAMPLE

What goes around, comes around.

Edison started a company called Edison General Electric.

He got pushed out of that and they dropped the ‘E’ so it’s now GE.

(Of course, some say that should mean Government Electric, but that’s another story.)


40 posted on 06/17/2010 10:29:21 AM PDT by BerserkPatriot (There are no 1st Amendment rights without 2nd Amendment Rights)
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