John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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 Posted: Wed Feb 03, 2010 5:16 am Post subject: dynamic balancing/Center Section/Cockpit Noise |
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That is a good looking center section. I'd like to have one like that.
I think I finally realize why my mkIII is louder in the cockpit than it was prior to building a new center section a couple years ago.
To save weight, and give it a longer service life, I used no lexan, covered it with .025 aluminum sheet.
My previous center section was constructed with lexan, then overlapped with .020 aluminum sheet.
Now I realize the lexan was probably reducing some of the engine and prop noise, and/or the sheet metal is amplifying the noise.
Guess I need to get me some of that Densofoam and cover the inside of the top of my center section.
Thought my ANR headset was going south, my hearing was getting worse, and my radio was not putting out enough volume, when it may be I have constructed a very efficient drum to sit under.
john h
mkIII
titus, alabama
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Rob/all,
I used a sound absorbing 1/2 thick foam(densofoam) from High tech Foams,on every surface of the of the center cover.It has a peel and stick side,white color and black on the other.Doubled on the spar carry through.I really believe it helps.G.Aman MK3C 2200 Jab
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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