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[Towertalk] Phillystran break strength vs. diameter?

To: <>
Subject: [Towertalk] Phillystran break strength vs. diameter?
From: (Jon Ogden)
Date: Thu, 12 Sep 2002 14:20:11 -0500
Kevlar is a fiber.  As such it has qualities different than steel.  While
its tensile strength is generally as strong or stronger than steel, it does
have drawbacks.

It can be cut with a knife.  It tends to get worn due to abrasion, etc.  The
idea of not running kevlar guys to the ground is due to all this.  Might a
vandal try cutting it?  Might the jacket get worn or abraided and hence
expose the kevlar to UV radiation?  Etc. etc.

It's more of a safety issue to keep the integrity of the Kevlar intact.  It
has nothing to do with a strength or technical issue.



on 9/12/02 1:47 PM, Dino Darling at wrote:

> Could someone explain this... (see below)?
> Dino...K6RIX
> ----- Original Message -----
> To: <>
> Sent: Thursday, September 12, 2002 10:00 AM
> Subject: Re: [Towertalk] Phillystran break strength vs. diameter?
> "...the factory said never never never use phillystran at ground level."
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Jon Ogden
NA9D (ex: KE9NA)

Life Member: ARRL, NRA
Member:  AMSAT, DXCC

"A life lived in fear is a life half lived."

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