Return-Path: Sender: (Marvin Kaye) To: lml Date: Thu, 04 Jul 2002 18:11:36 -0400 Message-ID: X-Original-Return-Path: Received: from rook.innercite.com ([158.222.5.8] verified) by logan.com (CommuniGate Pro SMTP 4.0b4) with ESMTP id 1601671 for lml@lancaironline.net; Thu, 04 Jul 2002 17:28:25 -0400 Received: from colwell (host-226-219.dialup.innercite.com [158.222.226.219]) by rook.innercite.com (8.11.6/8.11.6) with SMTP id g64LSO027476 for ; Thu, 4 Jul 2002 14:28:24 -0700 X-Original-Message-ID: <002c01c223a2$290a2500$89e2de9e@colwell> From: "Steve & Claudette Colwell" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Quality Sound Proofing X-Original-Date: Thu, 4 Jul 2002 14:31:28 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0029_01C22367.7BF2AB60" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_0029_01C22367.7BF2AB60 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable In addition to cost, weight, install time and its ability to absorb = liquids I doubt the effectiveness of soundproofing. =20 Consider the sources of noise in our aircraft; prop beat on the = windscreen (can't do anything about that), exhaust noise on the belly = (angle the pipes or outlets down a little more and or sound insulate = only above and behind them), air leaks (not a problem in a P and = something we should all pay attention to for drag reduction, cold = drafts, etc..) I would imagine the oil can noise in sandwich structure = is minimal. I believe the answer is in the best ANC Headsets you can find. We are = using the latest Bose in our RV6 with air leaks on the side of the = sliding canopy, big enough to jerk 1/2 of a WAC (the 1/2 with the = destination on it) out faster than you can say oh sh. Very effective = and it saves your hearing too. Steve Colwell Legacy 2K Placerville,CA (530) 621-3408 ------=_NextPart_000_0029_01C22367.7BF2AB60 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
In addition to cost, weight, install = time and its=20 ability to absorb liquids I doubt the effectiveness of = soundproofing. =20
 
Consider the sources of noise = in our=20 aircraft; prop beat on the windscreen (can't do anything about = that),=20 exhaust noise on the belly (angle the pipes or outlets down a little = more and or=20 sound insulate only above and behind them), air leaks (not a = problem=20 in a P and something we should all pay attention to for drag reduction, = cold=20 drafts, etc..)  I would imagine the oil can noise in sandwich = structure is=20 minimal.
 
I believe the answer is in the best ANC = Headsets=20 you can find.  We are using the latest Bose in our RV6 with air = leaks on=20 the side of the sliding canopy, big enough to jerk 1/2 of a = WAC (the=20 1/2 with the destination on it) out faster than you can say oh sh.  = Very=20 effective and it saves your hearing too.
 
Steve Colwell   Legacy = 2K =20 Placerville,CA   (530) 621-3408
 
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