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Sound proofing

Matronics Email Lists Forum Index -> Zenith601-List

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K Dilks

Joined: 22 Sep 2008
Posts: 108
Location: UK

Posted: Fri Sep 26, 2008 12:01 am Post subject: Sound proofing

Hi all,



 what are you guys using  to sound proof the forward fusalage?

 Where to get it etc etc .?

   My wife has told me to make it a quiet as possible........................send her gliding i think!



 Thanks

Kev

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psm(at)att.net
Guest

Posted: Fri Sep 26, 2008 2:33 am Post subject: Sound proofing

Hi Kev,



I'm using cushioned headsets to limit noise.  They may not be as 

fashionable as lots of padding, but they weigh a lot less.



Paul

XL getting close

do not archive



At 01:01 AM 9/26/2008, you wrote:

 	  Quote: 	
		  Hi all,



  what are you guys using  to sound proof the forward fusalage?

  Where to get it etc etc .?

    My wife has told me to make it a quiet as 

 possible........................send her gliding i think!



  Thanks

Kev

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ideaz1(at)sbcglobal.net
Guest

Posted: Fri Sep 26, 2008 7:23 am Post subject: Sound proofing

A couple of ideas... 1. I tested (on a previous plane) a 3 blade prop vs. 2 

blade and the 3 blade is definitely quieter. It also gave better climb but 

slightly less top speed.

2. any soft material (fabric etc.) that is covering the large areas of sheet 

metal will cut down on the drum effect. It doesn't necessarily have to be 

thick and heavy. Fiberglass insulation covered with something is really 

good, the thicker the better, there is a product called comfort therm from 

Johns Manville that's really nice. It's very fine and doesn't have the nasty 

qualities of regular fiberglass, like glass splinters and airborne 

particles. On that note I just found, at Home Depot, an interesting product. 

It's 1/8"  foil backed foam with self adhesive on the other side, for 

insulating ductwork. It didn't say if it's fire rated and I need to check 

with the manufacturer (or buy some and try to burn it).



Also the canopy thickness and square footage has a big effect on sound 

transmission. I don't think theres much we can do about the thickness and 

the only choice on canopy is the 601 vs 650 sizes.



PS you can also buy some stuff from AS but it's really pricey.

Dirk

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