What's the best way to direct gas rearward into a reflex volume?

[whiterussian1974]

This is c5_nc's build. viewtopic.php?f=10&t=134954
I've also thought about using SDTA's 3 chamber muzzlebrake as a starting point. Even thought about EDM/Mag-na-porting slits 2 1/2-4" behind the muzzle to vent gas into a reflex volume. Then regular design in front of muzzle.

I know that reflex designs don't offer much improvement. But I see no reason to waste the volume btw the forestock and muzzle. I don't mind the weight, so even 2dB would be better than 0.

Any thoughts, ideas, suggestions on best methods to direct gases rearward into reflex chamber?

[mr fixit]

My opinion only;

I think the combination of a muzzle brake and a blast baffle with as small as practical bore hole and no vents.

I think the brake will direct gas to the sides, and the blast baffle will restrict the gas from flowing forward as fast as it wants to flow. I think simple physics will prevail and the empty open volume behind will fill before there is enough pressure to force it through the bore hole and up the stack.

Again, just my opinion.

[Enfield577]

Hi

I made this can viewtopic.php?f=10&t=99991 for an AR10 a while back, the brake had the holes angled back at around 10 degrees, now the can was heavy but had virtually no recoil, you could have placed the butt on your chin and fired it

[gunny50]

Hi

I made this can viewtopic.php?f=10&t=99991 for an AR10 a while back, the brake had the holes angled back at around 10 degrees, now the can was heavy but had virtually no recoil, you could have placed the butt on your chin and fired it

Yes and that works well.
I did a similar job on my PSG1 build a while back.
Do som search here, you will find some info.






Gunny

[Enfield577]

Hi

I made this can viewtopic.php?f=10&t=99991 for an AR10 a while back, the brake had the holes angled back at around 10 degrees, now the can was heavy but had virtually no recoil, you could have placed the butt on your chin and fired it

Yes and that works well.
I did a similar job on my PSG1 build a while back.
Do som search here, you will find some info.






Gunny

I remember that it was Gunny that gave me the design - Thanks Mate

[gunny50]

Hi

I made this can viewtopic.php?f=10&t=99991 for an AR10 a while back, the brake had the holes angled back at around 10 degrees, now the can was heavy but had virtually no recoil, you could have placed the butt on your chin and fired it

Yes and that works well.
I did a similar job on my PSG1 build a while back.
Do some search here, you will find some info.
Gunny

I remember that it was Gunny that gave me the design - Thanks Mate

Enfield,
Helping out is what we try to do over here.

You did a great job on that, and showed that one does not need a welding machine to make one.

Gunny

[whiterussian1974]

Does anyone have links to articles or reviews showing how efficient differing brake designs are?
I've seen all different designs, but many force the gas forward away from shooter to quiet the blast.

Barrett M82 had an arrow shaped brake.

Artillery pieces often have a flat baffle w no restriction to the rear, then standard horizontal slits in the 2nd chamber.

And here are others.
http://kuulapaa.com/home/highspeed.html

[whiterussian1974]

Lutz Muller had a GREAT site full of info.
But it's no longer there.
It had great photos of "fishgill" and other designs for several different purposes.
I have also though that a 2.5" w/ 2"L of (4) 1/8" baffles tilted back @ 0,10,20,30* w 3/8" chambers between them was a highly efficient design.

[c5_nc]

The rearward facing ports on the reflex mount I have seem to work very well for defecting gases back. I had expected the "reflex" are to not be very efficent, for example I thought a 9" Reflex can that had 5" forward of the muzzle maybe would perform similar to a 6.5-7" standard can. However it seemed to do better than this.

[fastfire]

Would a disk or washer with holes similar to the one Gunny50 posted be quieter on this design,
viewtopic.php?f=10&t=135169 ?

Also a multiple ports with rearward slits make this design,
viewtopic.php?f=10&t=134954 quieter?
I'd think it would reduce recoil more that a single pair of rearward slits.

And with the combination of mutable rearward slits and the washer with holes ahead of the break be quieter?

[whiterussian1974]

Would a disk or washer with holes similar to the one Gunny50 posted be quieter on this design,
viewtopic.php?f=10&t=135169 ?

Also a multiple ports with rearward slits make this design,
viewtopic.php?f=10&t=134954 quieter?
I'd think it would reduce recoil more that a single pair of rearward slits.

And with the combination of mutable rearward slits and the washer with holes ahead of the break be quieter?

The 1st link just redirects back to this page. Please correct to which Thread you meant.

And yes, multiple ports would work better. That's why I mentioned the SDTA brake. http://www.sdtacticalarms.com/SDTA-Muzz ... _p_65.html

Or even having the port at rear of extension, then none for last 2". That way the gas would exit and be unable to reenter except back through the beginning of the tube where the ports are.

[whiterussian1974]

Just found Lutz Moeller's new site. Here's the page concerning recoil brake designs and measurements.
Sorry. It's in German. http://lutzmoeller.net/Bremse/Einige_Mu ... remsen.php
http://lutzmoeller.net/Bremse/Rueckstossbremse.php
Lots of great info though.

[cs86]

Just found Lutz Moeller's new site. Here's the page concerning recoil brake designs and measurements.
Sorry. It's in German. http://lutzmoeller.net/Bremse/Einige_Mu ... remsen.php
http://lutzmoeller.net/Bremse/Rueckstossbremse.php
Lots of great info though.

Is there a way to translate the page or switch the site to English. Looks very interesting.

[sillycon]

http://translate.google.com

Also, if you use Google's Chrome web browser, it can be set to automatically translate pages into your native tongue.