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zeprep251(at)aol.com
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 Posted: Thu Feb 25, 2010 3:50 pm Post subject: Noise Insulating Foam |
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Mike,
I also added the headsets inc kits to my H-10-30 DC 's.I have a lot of foam added to the aircraft but the kits REALLY improved my DC's
G.AmanMK-3C jabiru 2200A generating 2800 decibels (at) cruise.Well maybe not that much, but a lot anyway
--
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Thu Feb 25, 2010 3:52 pm Post subject: Noise Insulating Foam |
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I fly with a DRE6000 ANR headset. It worked great before the center section rebuild, actually allowed me to be able to hear well enough to fly with my radio. Since rebuilding the center section with sheet metal, I am getting more noise than the radio, ANR, and I can handle well.
john hauck
mkIII
Titus, Alabama
[quote] ----- Do you have an electronic noise-cancelling headset?
Thanks, Mike Welch
[b]
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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tclongo(at)att.net
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| Posted: Thu Feb 25, 2010 4:55 pm Post subject: Noise Insulating Foam |
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Hi Mike, I have installed one of these in my David Clark 10-20 headset and it works great. I compared it with my Bose X and have sold the Bose and use the David Clark now. It only works good on the low frequency range like you get from a direct drive motor that runs in the 2k to 3k plus range. Did not work that good in my MK III with 582 but works great in a Cessna or Piper. Hope this helps. Tom
<![if !supportEmptyParas]> <![endif]>
-----Original Message-----
From: owner-kolb-list-server(at)matronics.com [mailto:owner-kolb-list-server(at)matronics.com]On Behalf Of Mike Welch
Sent: Thursday, February 25, 2010 3:33 PM
To: kolb-list(at)matronics.com
Subject: RE: Re: Noise Insulating Foam
<![if !supportEmptyParas]> <![endif]>
John H.,
Do you have an electronic noise-cancelling headset? I bought one of those Headsets, Inc. kits that you install yourself. I bought it from them at the 2008 Oshkosh Airshow. I finally got around to soldering it in to my David Clark 13.4 .
Results; for me, mixed. My hearing is bad. Damn near gone, I think. Severe tinnitus, too.
When I turn on the noise-cancelling function on my headphones, I'd say the background noise reduction is better, but definitely not gone. I was just wondering how much improvement I could expect from this method, if you have experience with one.
Thanks, Mike Welch
> From: jhauck(at)elmore.rr.com
> To: kolb-list(at)matronics.com
> Subject: Re: Re: Noise Insulating Foam
> Date: Thu, 25 Feb 2010 10:35:04 -0600
>
> --> Kolb-List message posted by: "John Hauck" <jhauck(at)elmore.rr.com>
>
>
> Here is another source of soundproofing products.
>
> http://www.soundprooffoam.com/soundproofing.html?page_type=Soundproofing
>
> I've not tried any of these.
>
> --------
> Thom Riddle
>
>
>
>
> Thanks, Thom R:
>
> I like this one, RoadBlockR:
>
> http://www.soundprooffoam.com/automotive-sound-dampening.html
>
> It was originally designed for aircraft and heavy trucks. My mkIII will
> easily compete with these two for producing loud noise.
>
> Price seems within reach. All I need to do is determine how much I need and
> order it. Would be nice to knock out some of the racket I am being
> bombarded with.
>
> john hauck
> mkIII
> Titus, Alabama
>
>
>=====================
> _==========
>
>
>
Your E-mail and More On-the-Go. Get Windows Live Hotmail Fr_new'>Sign up now. [quote]<![if !supportEmptyParas]> <![endif]><![if !supportEmptyParas]> <![endif]> - The Kolb-List Email Forum - --> http://www.matronics.com/Navigator?Kolb-List - MATRONICS WEB FORUMS - --> http://forums.matronics.com - List Contribution Web Site - Thank you for your generous support! -Matt Dralle, List Admin. --> http://www.matronics.com/contribution<![if !supportEmptyParas]> <![endif]>[b]
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Thom Riddle
Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)
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| Posted: Fri Feb 26, 2010 6:07 am Post subject: Re: Noise Insulating Foam |
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I just got a response to an email inquiry to the site I listed as a supplier of the RoadBlockR product, which follows:
Hi Thom,
Planes and autos are always a tough one because of all of the noise variables. I had a gentleman who had replaced the bushings on his car with urethane bushings and had a very high pitched whirring sound as a result. He used the RoadBlockR and saw a definite reduction in vibrational noise in the car (and his audio system sounded 10 x’s better!), less of an echoing. He did see some minor reduction in the airborne noise, but not as much as he had hoped, so he is furthering the application with some sound absorption foam under the carpeting, etc. I haven’t heard back from him just yet on how he made out with that.
One of the other products you could look at is lining portions of the cabin with something like this product. This comes with either a peel and stick backing, or can be applied with an adhesive.
http://www.soundproofcow.com/foam-soundproofing-barriers/soundproofing-insulation-foam.html
Then I got another reply which follows:
Hey Thom!
I missed the last part of your email. The vibrational products do not have an STC rating, they have a Loss Ratio number. This is due to the fact that is a different test that is applied. They test the vibraitonal loss at different temperatures. The Barrier Composite has an STC of 20 from the barrier and an NRC of .25
Something else to consider, Roadblock R is a Class A rated fire resistant product. The second product is not. May be an important consideration.
Also, our Silent Running product is a roll on or spray on product. It basically takes the “ding” out of the metal…if the metal is hit, it has a “thump” sound.
http://www.soundproofcow.com/sound-deadening/sound-damping-coating.html
Tiffany M Roth
Acoustic Design Rep/Account Manager
American Micro Industries
440 Ramsey Ave
Chambersburg, PA 17201
P: 717-262-7244 C: 717-658-9111 F: 717-261-1790
troth(at)americanmicroinc.com
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_________________
Thom Riddle
Buffalo, NY (9G0)
Don't worry about old age... it doesn't last very long.
- Anonymous |
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NeilsenRM(at)comcast.net
Guest
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| Posted: Fri Feb 26, 2010 7:58 am Post subject: Noise Insulating Foam |
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John
I just found a sample of sound insulation I picked up at Sun-N-Fun last year
made for aircraft. I don't know how well it works. Scroll down they sell
their product in bulk.
http://www.soundexproducts.com/order.html
Rick Neilsen
Redrive VW Powered MKIIIC
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Fri Feb 26, 2010 8:16 am Post subject: Noise Insulating Foam |
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I just found a sample of sound insulation I picked up at Sun-N-Fun last
year
made for aircraft.
Rick Neilsen
**************
I'll probably go with the RoadBlockR product. It seems that it will do what
I want it to do with the simplest installation.
If I could keep the area under the center section and the top of the fuel
tank dry, I'd stuff it with insulation and drive one.
I can live with some noise, as I have done for years, but since the center
section overhaul, it has become overwhelming.
john hauck
mkIII
Titus, Alabama
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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