Hi I'm new to the Form 1 community. Here is a concept design i've been working on and i would appreciate
it if someone with more experience and knowledge would critique it. I'm basically wondering if the helical design is
going to be effective in reducing back pressure or if its just a waste of my time and money. I'm planning on using this suppressor on .223 up to 30 cal. All the maching would be done on a CNC turning center.

The big blast chamber will likely keep backpressure down if running on a gas gun, however this will sacrifice some in the way of FRP. The distal chamber could use a snorkel on the end cap but it is a bit large. The baffles are far apart could use tighter spacing and more baffles. Not sure what the app or intended ammo will be, so I will stop here. I like the spiral design but thinks more vanes would be beneficial, not sure on that part

Picking up on Hatchetjoe's perceptive idea of using your tube as a modified
snorkel one way to do this is to machine each end cap threaded with lips 1.75" to fit into
a 1.75" I.D. threaded tube.

Image like end thread Grainger Aluminum Tube:

<< https://www.grainger.com/product/5ZM18? ... 0952775171! >>

Now you would have large volume expansion chamber and in line K's.

Please keep us updated.


Best.

Well, now you have done it! ATF will be kicking down Grainger's door by the end of the day!

alordnapa wrote: ↑Tue Aug 04, 2020 1:06 pm Well, now you have done it! ATF will be kicking down Grainger's door by the end of the day!

Well said, Sir! Thank you for sharing your subtle sense of humor.
I hope it is not taken seriously by some as has been done in past.

Yet after checking out Grainger Catalog I was shocked, shocked that gambling ... I mean
silencers are openly being advertised: "..Exhaust Silencer Insert, Foam".*

And even worse foam wipes along with replacement silencers. Gasp! Where are the
smelling salts, Virginia Woolf!

Best!




<< https://www.grainger.com/product/3PXP1? ... 9090460944! >>

Thanks for your input. Its gonna be a bit before I'll have a working one. But i can certainly let you folks know how it turns out.

I'm kinda planning on it being a all around suppressor. Anything from 55gr to 220gr.

Comicparrot wrote: ↑Mon Aug 03, 2020 7:25 pm

This is a variation of the coaxial suppressor developed for sub-machine guns.A wonderful design that can cover a wide spectrum of calibers.The use of titanium alloys will help keep the weight down.
The spiral outer section should only have communication to the blast chamber. A single spiral of no more than 45* should will do what you wish.A shorter blast chamber and a far more extensive baffle stack will be required.
-CL

I agree w/ the Capt. Also, I wouldn't cut the blast spacer as you have. Ports near the distal side, to vent into the coaxial volume, would be more adequate and help protect the outer tube. Try to incorporate indexing clips, to help align the baffle clipping and coaxial vanes. Personally, I'd increase the distance from the baffle OD (not including vane tip) to the tube ID. This will reduce the chance of carbon fouling from blocking the chamber's flow.

The volume of the helical portion of this design is pretty low; I have a hunch that it would not help much, but that's just a WAG. Maybe our computer modeling guru on the board can do the math?