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[Towertalk] Phillystran break strength vs. diameter?

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Subject: [Towertalk] Phillystran break strength vs. diameter?
From: (Jon Zaimes AA1K)
Date: Thu, 12 Sep 2002 12:33:00 -0400

Yes the black jacket is to provide UV protection.

I'm still using some Phillystran that I bought in 1978. Now on its fourth QTH.

73/Jon AA1K

At 09:10 AM 9/12/02 -0500, you wrote:
>on 9/12/02 7:45 AM, at wrote:
>>> It may depend on the vintage of the Phillystran.
>> The measurements I sent were for the newer version of Phillystran which
>> has been out for 10 or more years. You can tie a knot in the newer stuff -
>> it's softer - and you can't in the older stuff.
>I assume the jacket on the Phillystran is UV proof?  Kevlar does not do well
>at all when exposed to UV for long periods of time.  It gets very brittle.
>How well does the jacket protect.
>I also know from my sailboat racing that Kevlar stretches over time as well.
>Anyone have any issue with that and Phillystran?
>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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