Author Topic: SILENCING AIRSOFT  (Read 7787 times)

r1p_c0rd

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SILENCING AIRSOFT
« on: October 19, 2008, 05:41:23 PM »
hi, i have an unusual question...

i play a sport called Airsoft, it's similar to paintball but our tgus are electric as apposed to gas powered and is more of military simulation. anyway, stealth is one of the holy grails in this sport, and the guns we use (AEG Automatic Electric Gun) they use an electricaly powered gear system to compress air via a cylinder as a propellant for the Projectile.

the noise created by this system is enough to give away you position as far away as 50 yards. i have made silencers to suppress the sound comingt fron the muzzle but as with real guns, most of the sound escapes through the body of the weapon.

i've been reading up on sound dampening materials and the biggest problem i'm finding is that they are typically too thick whether i place the material on the inside of the body or outside, anything more than 5mm, i've heard that asphalt tape could work but i found a website showing B-quiet extreme and i think that it's about 2mm which would be perfect but i can only buy in 12ft rolls, way too much so does anyone have any ideas of an alternative?

below are some of the weapons i use, they are exact scale models of real world weapons and authenticity is part of the game so whatever i do to dampen the sound, it cannot significantly affect the overall shape so a material 1 inch thick is out...

thanks in advance

Randy S

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Re: SILENCING AIRSOFT
« Reply #1 on: October 20, 2008, 04:07:40 PM »
Im not sure if trying to wrap your guns with a tape is going to yield a great reduction ... try using Noxudol and paint the gun this will at least dampen the impact sound of the firing mechanism.
And you can paint over it for stealth.
http://www.soundproofing.org/sales/liquid.htm
Randy Sieg

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DeathB4Dishonour

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Re: SILENCING AIRSOFT
« Reply #2 on: December 30, 2008, 10:56:53 PM »
I hope its not against the rules, but I would like to expand on this. I to am trying to sound proof an airsoft gun, the difference being that I don't are what it looks like, I just want it to be dead silent. However any material that we use is going to have to have some holes cut in it for area's such at the magazine catch, and safety, once again I don't care WHAT the end result looks like I just want it to be dead quiet. Any recommendations?

Randy S

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Re: SILENCING AIRSOFT
« Reply #3 on: December 30, 2008, 11:54:15 PM »
Well Dead quiet is not going to happen! now a slight reduction maybe....without an airtight sealed environment you will not stop sound from traveling....so the next best thing would be to dampen the casing of the gun to reduce sound coming from the case itself...using noxudol you can atleast get some reduction from the firing mechanism impact sound coming from the gun...paint it on a layer at a time to determine what thickness will be ideal and not effect the gun from operating...

I dont really have any other options that could reduce the gun noise without effecting the operation of the gun.
http://www.soundproofing.org/sales/liquid.htm
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

DeathB4Dishonour

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Re: SILENCING AIRSOFT
« Reply #4 on: December 31, 2008, 02:08:14 AM »
What about anything on the outside of the case? would that help at all, like a layer of some flexible soundproofing, that wouldn't impede the operation of an airsoft gun.

johnbergstromslc

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Re: SILENCING AIRSOFT
« Reply #5 on: December 31, 2008, 05:22:55 PM »
How much quieter you can make the gun depends on several things...

What is the gun made of - plastic or metal? 

How loud is it at 1 meter distance?  Have you measured it with a sound level meter?

DeathB4Dishonour

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Re: SILENCING AIRSOFT
« Reply #6 on: December 31, 2008, 10:07:55 PM »
It sounds almost like an RC car engine, and the housing is made of plastic, with metal on top. Were having the gun's measured with a sound meter as soon as we can bring them up to a friend who works in the theatre industries place. Should I come back here once I have the thickness of the material, and the sound level?

johnbergstromslc

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Re: SILENCING AIRSOFT
« Reply #7 on: January 02, 2009, 06:23:58 PM »
Well, the thickness of the plastic housing is probably not very substantial.  And realistically there may not be a lot you can do....

Try the previous suggestion with some kind of viscoelastic coating on the outside (or inside) of the gun.  Vibration is the enemy and plastic just doesn't have the mass needed to dampen it.  Also, the internal workings producing the vibration are designed to be rigidly attached to the housing, so the vibration transfer is pretty efficient.  If it were possible somehow to mount the internal noisy parts on some sort of isolators (plain, old ordinary rubber would do) as well as apply the viscoelastic coating, you could reduce the noise quite a bit.

But I also agree with the previous post - "dead silent" isn't gonna happen.

 

anything