[TowerTalk] Lexan - Element to mast plate

[Al Kozakiewicz]

Lexan is a polycarbonate, not an acrylic.  Plexiglass is an acrylic.

FWIW.

Al
AB2ZY 

-----Original Message-----
From: towertalk-bounces at contesting.com [mailto:towertalk-bounces at contesting.com] On Behalf Of Mickey Baker
Sent: Wednesday, May 18, 2011 7:22 PM
To: dave arruzza
Cc: towertalk at contesting.com
Subject: Re: [TowerTalk] Lexan - Element to mast plate

Hi, Dave,

The power of the sun over time is incredibly more powerful than a bullet.

UV degradation occurs to Lexan, degrading optical properties over time, however I know of no studies concerning structural integrity due to UV exposure, something that makes some acrylics brittle. Beware using dark colors, or anything that could raise the temperature. Acrylics tend to deteriorate with heat, and Lexan will be deformable at 100 degrees C - heating is how they're shaped.
How hot will it be in the hottest day of the summer in the sunshine where you live?

Why wouldn't you use fiberglass, steel or aluminum?

Best of luck whatever you do!

73,

Mickey N4MB

On Wed, May 18, 2011 at 12:28 PM, dave arruzza <w1ctn at yahoo.com> wrote:

> To all:
> I have a good supply of 1/2" bullet resistant Lexan.
>
> Would this material be suitable for a element to mast plate for a 
> linear loaded shortened 40 meter rotary dipole?
>
> Element length is 24' per side and the element is constructed from 1-1/4"
> double walled aluminum for the first piece from the center of the dipole.
> Phillystrand truss from element midpoint to mast above the dipole center.
>
> 73
> Dave
> W1CTN
> Radio Ansonia
>
>
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--
Mickey Baker
Fort Lauderdale, FL
"Tell me, and I will listen. Show me, and I will understand. Involve me, and I will learn." Teton Lakota, American Indian Saying.
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