[OneWingedShark]

Thank you.

[mnehring]

I have no idea, I’m just bumping to read the responses of people who know. :->

[chuck_the_tv_out]

The picture comes through as an ad - they must not like hotlinking

“my state pass a Firearm Freedom Act”

I’d like a ready reckoner of which states have which laws, including things like that. Is there such a site?

[b4its2late]

So, since I’m no expert on fluid dynamics,

Either am I, but I do know how to drink lots of beer. Does that qualify me?

[thackney]

I think that:

“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”

are conflicting specification requirements.

[laker_dad]

I’m interested too, even though my wife made me get rid of my guns years ago...

[Mr. K]

I just read something the other day that silencers do not reduce the gunshot to the sound of a cat landing on a pillow... they merely reduce it from 140 db to 120db or something like that

Any one here ever shot a gun with a silencer?

I also read that an aluminum soda can loosely packed with steel wool makes a realtively good silencer- anyone care to try that and let me know?

:)

[The Toll]

I wasn’t here and I never read this thread!

[Mr. K]

Nikolai Tesla was one of the most brilliant scientist that ever lived

I would give anything to have worked with him- he is my personal favorite scientist (who is yours?)

There is a nice statue of him in Niagara Falls

(he was single handedly responsible for electricity we all use today - AC current - despite Edison doing the most stupid thing one scientist can do to another, which is to try to stop the success of a better system for your own financial gain - sort of like VHS and BETAMAX ha ha)

[fso301]

If you make the barrel really, really long, you will achieve a legally silenced firearm requiring no federal permits or licenses.

[equalitybeforethelaw]

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.

[evets]

Steven Seagal made a silencer from a soda bottle in Under Seige...

so... it must be true.

[The KG9 Kid]

I understand what you're trying to get across here.

I see in Figure 1 of your link that the baffles redirect the gas backwards into the stream which you imagine would retard the flow:

This already exists as the 'K' baffle stack design used in several modern suppressor designs:

Now although the example above doesn't precisely match the Tesla design you linked to, the idea of redirecting exhaust gas back 'upstream' one or two segments is already a standard.

One thing you may want to think about is that if you were to reproduce the exact Tesla design you mention, I believe that the reduction in the volume of the suppressor body would work against you. Volume has more to do with suppression than a fancy suppressor baffle stack design. Also, if you insisted on replicating the Tesla design by adding more material and volume to match, you may end up with a suppressor that's far larger, heavier, and more expensive than modern designs and ultimately offers little to no better decibel reduction than the competitors product.

What end users want are low cost suppressors with light weight and small form factor. Effective suppressors have been available for many decades for both pistols and rifles; the game these days is manufacturing a suppressor that's lightweight, inexpensive, and doesn't adversely affect barrel harmonics by being a big donk of metal.

For an integrated design (like your DeLisle carbine or an Hk MP5SD), the problem is even compounded by the limits of specifically designing the suppressor to fit one platform. End users prefer the option to use the same suppressor across multiple hosts. That's why the uniform 'Quick Detach' feature on the higher end suppressor models is a highly desirable attribute these days rather than just a novelty characteristic.

Now, if your resulting Tesla-inspired design enormously reduced report decibel levels to an unheard of low figure compared to the products already out there, then I would imagine that there would be great interest in your design. Short of a landmark achievement in decibel reduction, I think that you'll find that the traits I listed above (low cost, light weight, reduced profile) outweighs everything else for the end users.

Anyway, good luck with your brainstorming. Take note that Dr. Philip Dater from GemTech occasionally holds suppressor design seminars for industry manufacturers at Long Mountain Outfitters in Henderson Nevada.

[DCBryan1]

Go get an NFA trust, and an LLC for research provision under the NFA. Call ATF and fill out forms for an FFL . You’ll want a type 07 FFL. After inspection, pay for a class 02 SOT. Make your own after form 1 approval;)

[yefragetuwrabrumuy]

There is an obvious potential silencer that might work very well and would even be legal under current anti-silencer laws.

Current silencers just dampen sound, and not very effectively. What this silencer would do would be to *counter* the sound, neutralizing it.

The science is well known, as used to strongly reduce the sound of things like pile drivers and jet aircraft noise with an equal and opposite noise.

But the noise produced by a gun is easier, because bullets produce a near identical sound signature. So you just need to measure how sound propagates from a particular gun.

Then you create a “loop” around the gun, mounted with small speakers. They give off their noise in time with the firing of the bullet. There is no delay to capture the noise and duplicate it so the loop can be close to the gun.

Otherwise I can imagine putting a tough plastic bag around the gun which inflates full of SF6, Sulfur Hexafluoride, which is a non-toxic, non-flammable fire control gas, about three times as dense as air. When the gun is fired, the noise propagates very slowly, so sounds much lower, as well as being diminished by the plastic.

[count-your-change]

Silencer/suppressors work on the same principle as an automobile muffler, they redirect the gases to slow them down and to release them at a much slower speed. It doesn't matter how its done so there can be several designs that accomplish this. The more you can slow down the escaping
gas speed the greater the sound suppression.

[SWAMPSNIPER]

The prevailing law against silencers is a federal law.

[The Comedian]

Class-3-Tesla-silencer-technology-Philadelphia-Experiment-Montauk-subsonic-scalar-weapon ping!

Frowning takes 68 muscles.
Smiling takes 6.
Pulling this trigger takes 2.
I'm lazy.

[sig226]

Silencerco Sparrow:

Of course, you still have to have a barrel to allow the gas to expand and accelerate the bullet.