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 Post subject: 223 step cone baffle
PostPosted: Sat Sep 04, 2010 1:10 am 
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Silent But Deadly

Joined: Sun Sep 18, 2005 6:53 pm
Posts: 1896
Location: WA, USA
I am making a silencer for a friend. It will be like my 7 inch K baffle can, but with step cones instead. It is all 4130 steel except for the SS muzzle brake it is mounted to.

Image
Image

He wants a short 6 inch can. I aim to please as he is paying for it and I get to experiment with a new design.

Ranb

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 Post subject: Re: 223 step cone baffle
PostPosted: Sat Sep 04, 2010 1:17 am 
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Silent But Deadly
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Location: miami, florida
ranb wrote:
I am making a silencer for a friend. It will be like my 7 inch K baffle can, but with step cones instead. It is all 4130 steel except for the SS muzzle brake it is mounted to.

Image
Image

He wants a short 6 inch can. I aim to please as he is paying for it and I get to experiment with a new design.

Ranb


do you mean you are making k baffles and the cone part of the k will be stepped?

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 Post subject: Re: 223 step cone baffle
PostPosted: Sat Sep 04, 2010 10:28 am 
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Silent But Deadly

Joined: Mon Mar 29, 2010 11:37 pm
Posts: 2533
Ranb, will you be able to meter the final design?


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 Post subject: Re: 223 step cone baffle
PostPosted: Sat Sep 04, 2010 11:52 am 
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Silent But Deadly

Joined: Sun Sep 18, 2005 6:53 pm
Posts: 1896
Location: WA, USA
delta9mda wrote:
do you mean you are making k baffles and the cone part of the k will be stepped?

No, these are K baffles and look nothing like the cones I am making this time.

Image

Ranb

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SilencerTalk was a place I could disccuss making registered silencers without being told I was a criminal. That is no longer true. http://www.silencertalk.com/forum/viewtopic.php?f=132&t=99273


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 Post subject: Re: 223 step cone baffle
PostPosted: Sat Sep 04, 2010 11:54 am 
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Silent But Deadly

Joined: Sun Sep 18, 2005 6:53 pm
Posts: 1896
Location: WA, USA
Historian wrote:
Ranb, will you be able to meter the final design?

No access to a meter. I just have to decide how I like the sound.

Ranb

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 Post subject: Re: 223 step cone baffle
PostPosted: Thu Oct 14, 2010 4:52 pm 
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Member

Joined: Fri Oct 12, 2007 7:57 am
Posts: 14
Location: Texas
One quick comment on the brake / can adapter.
I noticed you've got a raised flange on the back end of it. That can be eliminated if the can "bottoms out" on the end of the brake at the centralizer baffle. Of course that wouldnt leave you a shoulder should you require a thread protector on the OD when not used with the can.
I know because I drew mine out that way the first time, but didn't like the larger OD on the brake versus the barrel diameter once the part was coming together and I got a look at it.
Food for thought.


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 Post subject: Re: 223 step cone baffle
PostPosted: Thu Oct 14, 2010 9:50 pm 
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Silent But Deadly
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Joined: Sun Jan 22, 2006 1:42 am
Posts: 322
Location: USA
Those baffles are pretty close together!

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 Post subject: Re: 223 step cone baffle
PostPosted: Fri Oct 15, 2010 6:32 am 
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Joined: Tue Sep 16, 2008 6:11 am
Posts: 46
Location: North coast
what wall thickness are you using for the tube?


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 Post subject: Re: 223 step cone baffle
PostPosted: Fri Oct 15, 2010 12:38 pm 
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Silent But Deadly

Joined: Sun Sep 18, 2005 6:53 pm
Posts: 1896
Location: WA, USA
The final product was 7-1/4 inches with 5 baffles, and yes they are close together. Two cones in front, two step cones then a smaller cone next to the end cap. I machined the center adaptor to allow the brake to go completely through instead of bottoming out and kept the raised portion of the brake to index on the rear end cap. The brake is kept on the silencer. The tubing is .035", everything is 4130 except for the stainless brake.

http://www.youtube.com/watch?v=kVtzVBYFT-Y

The first suppressed AR in the video is my older K baffle can on a 20" Hbar, the step cone can is on a 16" carbine. The shooters said the step cone can was higher in pitch and a bit louder. The increased noise might be due to the shorter barrel. I might go back to using K baffles except where I need greater strength.

Ranb

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SilencerTalk was a place I could disccuss making registered silencers without being told I was a criminal. That is no longer true. http://www.silencertalk.com/forum/viewtopic.php?f=132&t=99273


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 Post subject: Re: 223 step cone baffle
PostPosted: Mon Oct 18, 2010 3:08 pm 
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Silent But Deadly
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Joined: Thu Mar 06, 2008 5:19 pm
Posts: 641
Location: TX
Is it conclusive that the stepped cone design is better than a normal 60 degree cone baffle?

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 Post subject: Re: 223 step cone baffle
PostPosted: Mon Oct 18, 2010 6:23 pm 
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Silent But Deadly

Joined: Sun Sep 18, 2005 6:53 pm
Posts: 1896
Location: WA, USA
I can not determine which is better for suppression, cone, step cone or K. I only have my ears to go by.

Ranb

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SilencerTalk was a place I could disccuss making registered silencers without being told I was a criminal. That is no longer true. http://www.silencertalk.com/forum/viewtopic.php?f=132&t=99273


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 Post subject: Re: 223 step cone baffle
PostPosted: Mon Oct 18, 2010 10:09 pm 
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Silent But Deadly
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Joined: Mon Jan 25, 2010 5:31 pm
Posts: 1645
Location: Idaho
About how thick were the baffles? and .035 seems kinda thin, but seeing as it worked for you, I might go with .049 rather than .065

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 Post subject: Re: 223 step cone baffle
PostPosted: Tue Oct 19, 2010 12:55 am 
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Silent But Deadly

Joined: Sun Sep 18, 2005 6:53 pm
Posts: 1896
Location: WA, USA
I think .035" is plenty thick. There is a guy here who made a 50 bmg can from .065" tubing. I made the blast baffle about .070" and the remaining baffles about .040" thick. The spacers are .020".

I used .065" tubing for my first 223 can and think it was way too thick.

Ranb

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SilencerTalk was a place I could disccuss making registered silencers without being told I was a criminal. That is no longer true. http://www.silencertalk.com/forum/viewtopic.php?f=132&t=99273


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 Post subject: Re: 223 step cone baffle
PostPosted: Tue Oct 19, 2010 1:51 am 
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Silent But Deadly
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Joined: Mon Jan 25, 2010 5:31 pm
Posts: 1645
Location: Idaho
.049 it is. Thank you much

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