Making a "Loudener" louder?

himurax13 · 03-23-2008, 02:23 PM

I was at my buddy's machine shop yesterday and after taking a quick look at my "Loudener" setup that he could make it louder by drilling some holes. Does anyone have a suggestions to make this as loud as possible?

HP_Lovecraft · 03-23-2008, 02:32 PM

The optimal shape is an exponential curve to maximize pressure displacement:

Walking_Target · 03-23-2008, 03:02 PM

Haha! HP strikes again!

seriously though, think it through a bit...

a loudener works by directing a pressure wave and causing maximum displacement of atmosphere to create as large a pressure wave as possible.

now, if you drill holes into it, it will cause the pressure displacement to loose effectiveness as you are losing pressure (as with barrel porting...)

CrazyBoy78 · 03-23-2008, 03:57 PM

Put another loudener on it.

CamoDeafie · 03-23-2008, 06:37 PM

or do what i had in mind, make a sealed chamber, that fits over the barrel's porting, preferably the only place with porting, so that theres no exposed porting and put the loudener's bugle horn shape in front of it, that way you can have the extractor and flash hider/bugle. its based on the idea that the air pushed in front of the ball would be diverted into the chamber by the porting, and as the ball passes the chmaber, it creates a vacuum and thus extracts the air behind it, thereby giving slightly more pressure behind the ball, which then exits throught the loudener, possibly making it more of a boom than crack sound, but this is based on the theory of fume extactors used in tank cannons....which all uses MUCH higher presures and velocities and has the projectile basically forced into the rifling, so im not sure if theres a merit to this idea?

Chess13 · 03-23-2008, 07:16 PM

You can always buy a cheap brass trumpet off e-bay for like 20ish cut the end off and attach it over the end of a barrel. Pretty easy to do doesn't take much skill and it will make it nice and loud.

super-cameron · 03-23-2008, 07:57 PM

Quote:

Originally Posted by Walking_Target

Haha! HP strikes again!

seriously though, think it through a bit...

a loudener works by directing a pressure wave and causing maximum displacement of atmosphere to create as large a pressure wave as possible.

now, if you drill holes into it, it will cause the pressure displacement to loose effectiveness as you are losing pressure (as with barrel porting...)

Exactly. That's why a "quiet barrel" usually has lots of holes (porting) to help displace the noise. Make sure the barrel it goes on is solid with NO porting. Also, shorter barrels tend to work better.

LK-13 · 03-23-2008, 08:12 PM

and experiment that may help is to take a length of pipe of the diameter you believe that you will be making your loudner,
then make a disk that will fit your barrel and seal off the end of the pipe.
now slide the pipe back and fourth while shooting, kind of trombone like,
you will hear the report of your marker change.
when you find the sound signature your looking for,
mark the pipe accordingly,
and have your actual loudner made to these dimensions.
this will give you the best BANG for your buck.

it's all about sound focusing in a resonating column.
much like a tubular bell or a drum.

SCPaint · 03-23-2008, 11:06 PM

Quote:

Originally Posted by Chess13

You can always buy a cheap brass trumpet off e-bay for like 20ish cut the end off and attach it over the end of a barrel. Pretty easy to do doesn't take much skill and it will make it nice and loud.

and we want pics too!

super-cameron · 03-24-2008, 08:25 AM

Sweet! It would look like a musket!

03-23-2008, 02:32 PM	#2 (permalink)
HP_Lovecraft MCB Member Join Date: Aug 2006 Location: Southern Maine	The optimal shape is an exponential curve to maximize pressure displacement: __________________ www.montneel.com My Myspace nonsense "the evidence strongly suggests that neither Billy nor Adam (Smart Parts) could have invented the electronic paintgun" -Garr M. King, U.S. Judge

03-23-2008, 03:57 PM	#4 (permalink)
CrazyBoy78 Classy Join Date: May 2006 Location: Mississauga, ON	Put another loudener on it. __________________ Later........ Andry : ) [Party of A-5: Remember the Ewoks in Return of the Jedi? Now Imagine that with beavers.] Proud member of The Peacekeepers, UMSG JTF7, Rogue Cell #12 and CCABB My Feedback Stuff for Sale

03-23-2008, 06:37 PM	#5 (permalink)
CamoDeafie Post Whore Join Date: Feb 2007 Location: Monmouth, Oregon	or do what i had in mind, make a sealed chamber, that fits over the barrel's porting, preferably the only place with porting, so that theres no exposed porting and put the loudener's bugle horn shape in front of it, that way you can have the extractor and flash hider/bugle. its based on the idea that the air pushed in front of the ball would be diverted into the chamber by the porting, and as the ball passes the chmaber, it creates a vacuum and thus extracts the air behind it, thereby giving slightly more pressure behind the ball, which then exits throught the loudener, possibly making it more of a boom than crack sound, but this is based on the theory of fume extactors used in tank cannons....which all uses MUCH higher presures and velocities and has the projectile basically forced into the rifling, so im not sure if theres a merit to this idea? __________________ nothing like the heft of steel nelspots

03-23-2008, 07:16 PM	#6 (permalink)
Chess13 New to the old school Join Date: Nov 2007 Location: Sonoma, Ca	You can always buy a cheap brass trumpet off e-bay for like 20ish cut the end off and attach it over the end of a barrel. Pretty easy to do doesn't take much skill and it will make it nice and loud. __________________ Photo's Feedback: AO Feedback +1 -0 Custom Cocker Feedback +1 -0 MCB Feedback +1 -0 PBN Feedback +5 -0 Old and +5 -0 New Proud owner of: Firpo 3000 the pink Free Flow 'Cocker

03-23-2008, 08:12 PM	#8 (permalink)
LK-13 Post Whore Join Date: Jan 2007 Location: St.Catharines Ontario Canada	and experiment that may help is to take a length of pipe of the diameter you believe that you will be making your loudner, then make a disk that will fit your barrel and seal off the end of the pipe. now slide the pipe back and fourth while shooting, kind of trombone like, you will hear the report of your marker change. when you find the sound signature your looking for, mark the pipe accordingly, and have your actual loudner made to these dimensions. this will give you the best BANG for your buck. it's all about sound focusing in a resonating column. much like a tubular bell or a drum. __________________

03-24-2008, 08:25 AM	#10 (permalink)
super-cameron The Amazing Spyder Man Join Date: May 2007 Location: Kingsport, TN	Sweet! It would look like a musket! __________________ Thanks! -Cameron Team Spin, Old School Division cameronkbyrd@gmail.com www.theoaksjohnsoncity.com Oaks Audio: http://www.theoaksjohnsoncity.com/audio.aspx My feedback: http://www.mcarterbrown.com/forums/f...tml#post240155

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