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Re: Europa-List: Re: Cork insulation for noise reduction

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Subject: Re: Europa-List: Re: Cork insulation for noise reduction
From: Pete Zut <peterz@zutrasoft.com>
Date: Tue, 12 Sep 2023 06:19:38 -0400
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Indeed when I changed to the softer industry-std Lords for engine mounts, my cabin noise decreased markedly.  I find that at anything over 120knots and the airstream noise is greater than the engine noise. Prop noise (3 blade CS E-prop) is also noticeable over the engine noise.

Cheers,
PeteZ

On Tue, Sep 12, 2023 at 6:11 AM JohnFrance <77alembert@gmail.com> wrote:
--> Europa-List message posted by: "JohnFrance" <77alembert@gmail.com>

Having flown a couple of hours recently in a friend’s WT9 I was amazed how quiet it is compared to my Europa. In the WT9 a conversation is possible even without headsets  whereas my Europa is very uncomfortable with headsets removed.
I think there is a lot of direct noise transmission through the engine mounts as the rubber mounts are very hard and let’s face it arrives in the cockpit under our feet.
Does anyone have any information on what lining all the front facing inside walls  of the cockpit module with 3mm of cork might have on sound attenuation?

--------
Europa mono Nr 192




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http://forums.matronics.com/viewtopic.php?p=511421#511421






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