mdnanwelch7(at)hotmail.co
Guest
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 Posted: Sun Jun 06, 2010 8:10 am Post subject: PolyFiber silver coats and their effect on radio signals |
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> Gents,
| Quote: | I had been wondering, for some time, what to do about the PolyFiber
PolySpray coats. PolySpray is a metal-loaded paint that is used to
protect PolyFiber fabric from UV damage.
FWIW!
James
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� James,
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� In addition to the information you just shared regarding PolySpray, I thought I'd throw my two cents in......
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� Back when I had my Cessna, which spent all of it's life outside, I noticed that the top-side of the surfaces oxidized a fair amount.� The wings' upper surfaces, fuselage, etc, really needed those polishes and wax jobs.
� The bottom surfaces didn't!!!!���� They were as shiny as the day they got painted.� A wash and a�simple coat of wax to clean any smog residue and they were "good�to go"!
� The tops required plenty of polish and elbow grease!!� I was able to eventually get a pretty decent shine on the top, but it�was real evident that it oxidizes�"significantly" more than the bottom surfaces (the paint job was about 7 years old, the underside has ZERO oxidation).
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� So!!� With this personal experience on my own Cessna, I made the decision to only spray the Poly Spray silver paint on the upper surfaces of the airplane I'm building.� The sun does NOT shine on the bottom, so I did't want�to waste the paint.
� I know what the Poly Fiber manual says.� It wants you to spray the entire plane!!� I talked to Dondi Miller ((at) Aircraft Tech Support...a leading seller of the P.F. products), and she said as far as she knew, you have to spray the entire plane.� But, since I get to make the decision on my own plane....I chose not to.� Others opinions may differ.� I'm ok with that.
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� What this may have to do with your post is;� if a guy were planning to install his antennas inside his Poly Fabric covered plane, he might seriously consider NOT spraying the Poly Spray silver coats on the bottom surfaces.
� The Poly Fiber manual suggests that in order to get the best UV protection, you need to spray the silver coatings thick enough that virtually zero light shines through.� Plus, according to the manual, a certified aircraft HAS to be fully covered!!��
� I can see where such a semi-solid layer of aluminum flakes could affect some radio waves.� I chose to not do the bottom surfaces.� (They got their share of sealer/paint, etc)�
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� Just my thoughts on the matter....
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Mike Welch
Kolb MkIII
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The New Busy is not the too busy. Combine all your e-mail accounts with Hotmail. Get busy. [quote][b]
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