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[TowerTalk] Glasstran guy failures

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Subject: [TowerTalk] Glasstran guy failures
From: (Jon Zaimes AA1K)
Date: Thu May 22 15:04:08 2003
I have been using three Glasstran guys on the upper set of 100 feet of Rohn 25. 
This is my 160-meter, series-fed tower which is lightly loaded at the top with 
small 6 meter, 2 meter and 1.25 meter antennas.

Glasstran is the predecessor of Phillystran. It is fiberglass material covered 
with a thin black sheath for UV protection. 

Back in January one of the guys failed, somewhere near the middle. It just 
pulled apart -- there were no tree limbs or anything nearby to chafe it. 
Fortunately I had a calm day and after loosening the other two guys in the set 
I replaced the broken one with a new one made of EHS steel with insulators.

Yesterday I found another of the Glasstran guys broken -- this time right at 
the bottom end fitting. This and the other remaining Glasstran will be replaced 
with steel as soon as weather permits.

I don't know what the expected life span of this material was, but it obviously 
has been exceeded! I purchased a 500-ft spool from Phillystran in the mid-1980s 
and it was used then for about 6 years, then kept in storage for about 6 years 
till reinstalled at this QTH 5 years ago.

73/Jon AA1K

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