slightly “dirty” silencers are quieter than “spotless” ones?

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wacki
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slightly “dirty” silencers are quieter than “spotless” ones?

Post by wacki » Fri Apr 26, 2013 1:40 am

please explain:
We get folks that email and call about cleaning their rimfire baffles/core. Understand that you don’t have to scrub them spotless (and strip the protective Hard Coat Anodizing) or use caustic chemicals that create hazardous brews to get your silencer back to sounding great. In fact slightly “dirty” silencers are quieter than “spotless” ones.
http://www.aacblog.com/why-the-prodigy-is-take-apart/

Historian
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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by Historian » Fri Apr 26, 2013 8:12 am

First WAG thoughts,usually suspect, before first cup of coffee:

1. Black Body Radiation: faster heat absorption.
Reminiscent of instructions one gets when first
using/seasoning a cast iron pan ... do not clean to well.

2. More fractal surface area due to the crud surface and thus
creating mini-turbulances, delays, vector break up.

3. After a few shots the ears are shutting down for survival as
was presented recently in an article on Audiology.

Now awaiting some real expert here to give a correct explanation for this
interesting question.

57fairlane
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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by 57fairlane » Fri Apr 26, 2013 8:45 am

My only other thought besides what historian posted would be carbon "sealing" the very small gap between the tube ID and the baffle/core OD . . .

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Bendersquint
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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by Bendersquint » Fri Apr 26, 2013 11:02 am

Historian pretty much nailed it in his number 2 response.

Think about it like an ice rink. If the surface is nice and smooth(clean can) the skater(gas) flows smooth and fast. If the surface is rough(carbon buildup) the skater(gas) is slower and uses up alot of energy to move across the surface and there will be alot of deflection of gases in a gery unorganized manner.

To a sound metrr a dirty can WILL be quieter than a spotless can but we have never been able to notice the difference to our ears, once we have sound equipment we will be testing it so there is documented proof of it being quieter or not.

Always good to keep your can clean but doesnt have to be spotless.

Remember, when companies test cans they test them in new configuration with no buildup.....so you know you are getting at least that performance, perhaps you gain 2-4 dB of reduction when dirty but that determination will be left up to the sound meter in the future.

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Bendersquint
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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by Bendersquint » Fri Apr 26, 2013 1:47 pm

Jer wrote:Humph - so a magazine full of .22lr through my 5.56 can could quite it a bit more....
No it wont, the above is referenced towards rimfire and pistol cans only. Rifle cans operate under a different pressure levels and arent affected as easily as pistol/rimfire.

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Emilio
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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by Emilio » Fri Apr 26, 2013 4:08 pm

wacki wrote:please explain:
We get folks that email and call about cleaning their rimfire baffles/core. Understand that you don’t have to scrub them spotless (and strip the protective Hard Coat Anodizing) or use caustic chemicals that create hazardous brews to get your silencer back to sounding great. In fact slightly “dirty” silencers are quieter than “spotless” ones.
http://www.aacblog.com/why-the-prodigy-is-take-apart/
Yes people over clean (even ruin guns over cleaning)

Think of acoustic ceiling and sound rooms, you see smooth shiny walls? . :wink:
Member of the LSU, SWR, and RUGGED underground. Shame Silencerco!

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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by Kramer » Sun Apr 28, 2013 5:47 pm

I have a shooting buddy that has over 10k threw his Outback II and it's still quiet. I want to see that one when it finally gets open. Most of the ammo was Dynapoint.

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Bendersquint
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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by Bendersquint » Sun Apr 28, 2013 5:57 pm

Kramer wrote:I have a shooting buddy that has over 10k threw his Outback II and it's still quiet. I want to see that one when it finally gets open. Most of the ammo was Dynapoint.
Willing to put money on it that once its clean that your definition of "still quiet" will dramatically change. It may still suppress but not anywhere near the levels it is capable of.

Once we get our sound equipment we will be doing some documentation on cases just like this so people can see exactly how much reduction they are loosing.

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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by wacki » Sun Apr 28, 2013 7:52 pm

Emilio wrote:
Yes people over clean (even ruin guns over cleaning)
How?

As long as you re-oil / grease what are these people doing?

Scrubbing w/ steel brushes?

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Bendersquint
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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by Bendersquint » Sun Apr 28, 2013 7:58 pm

wacki wrote:
Emilio wrote:
Yes people over clean (even ruin guns over cleaning)
How?

As long as you re-oil / grease what are these people doing?

Scrubbing w/ steel brushes?
Scrubbing with steel brushes, sand blasting, over doing it on soda blasting(destroys anodizing if too much), steel picks.

We have replaced some NASTY baffles from over cleaning! Some people let their OCD get the better of them when it comes to cleaning baffles and tubes.

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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by wacki » Sun Apr 28, 2013 11:30 pm

As always, Thanks for the info bender.

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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by twodollarbill » Mon Apr 29, 2013 12:09 pm

At one time I pulled mine apart at 500rds and brushed off the baffles and continued shooting.
I found that 1500 to 2000rds was a good break time to do a complete cleaning.
I would not want to be the "guy" that could not get his 22lr can apart
because he fired ten thousand rounds and did not have a clue on
the amount of buildup that just 500rds, 2000rds or 5000rds did.

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Bendersquint
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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by Bendersquint » Mon Apr 29, 2013 12:27 pm

twodollarbill wrote:At one time I pulled mine apart at 500rds and brushed off the baffles and continued shooting.
I found that 1500 to 2000rds was a good break time to do a complete cleaning.
I would not want to be the "guy" that could not get his 22lr can apart
because he fired ten thousand rounds and did not have a clue on
the amount of buildup that just 500rds, 2000rds or 5000rds did.
We service far too many take apart cans from people that don't ever take them apart.

Unfortunately I hear more often than not.... "Its nice to have the ability to should I ever choose to clean it". They just don't realize that if you don't clean it it will become a sealed can.

Historian
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Re: slightly “dirty” silencers are quieter than “spotless” o

Post by Historian » Mon Apr 29, 2013 3:30 pm

Bendersquint wrote:
twodollarbill wrote:At one time I pulled mine apart at 500rds and brushed off the baffles and continued shooting.
I found that 1500 to 2000rds was a good break time to do a complete cleaning.
I would not want to be the "guy" that could not get his 22lr can apart
because he fired ten thousand rounds and did not have a clue on
the amount of buildup that just 500rds, 2000rds or 5000rds did.
We service far too many take apart cans from people that don't ever take them apart.

Unfortunately I hear more often than not.... "Its nice to have the ability to should I ever choose to clean it". They just don't realize that if you don't clean it it will become a sealed can.
Well said, Mr. B. But one good result is that they are lucky to have a smith who can fix things
as well as 'tune' things up. A variation of George Carlin's* rant " ... more work for me, more work for me."


* << http://www.youtube.com/watch?v=qR9mWjENZi8 >>
Especially on gays in the military " ... more pussy for me, more pussy for me ... ". :) :)

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