[TowerTalk] Lexan - Element to mast plate

[Gene Fuller]

I use 1/8" clear lexan as spacers for linear loading and for the boom 
feedline on my 7-60 MHz log periodic. It's been up for about 8 years now 
with no problems.
If you want real engineering/technical info I suggest you contact GE. Their 
Lexan labs used to be in western MA.
Gene / W2LU

----- Original Message ----- 
From: "Mickey Baker" <fishflorida at gmail.com>
To: "dave arruzza" <w1ctn at yahoo.com>
Cc: <towertalk at contesting.com>
Sent: Wednesday, May 18, 2011 7:21 PM
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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