I had Phillystran (100 foot length, remainder EHS) up on the top set of guys
on the 150 foot tower for five years, both ends connected with a single
shackle. These guys were moved to the bottom when all were replaced with
Phillystran to prepare for stacking 4 Yagi antennas. Close inspection
revealed no wear on the shackles, thimbles and tower guy bracket. I used a
Crescent wrench to tighten the shackle bolts to about 20 foot pounds. These
bolts may also be secured with safety wire but this is not necessary unless
there is vibration from constant winds.
Keith
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Ron Hylton
Sent: Friday, August 20, 2004 2:19 AM
To: TowerTalk@contesting.com
Subject: [TowerTalk] More Phillystran Hardware Questions
Thanks to all who responded to my prior post about transitioning from 1/4
EHS to Phillystran. The most popular response was to use a 502 insulator,
but folks also used a shackle or simply interlocked the thimbles.
My next question is this: Looking at the Phillystran Technical Bulletin
105-4/96, it shows the use of 2 shackles when going from the "tower plate"
to the thimble for the Phillystran. The drawing shows the bolt portion of
the shackle going through the tower plate (like a torque arm or the top of a
flat-top 45G section) and the bolt portion of the other shackle going
through the thimble. Thus the "U" shapes of both shackles are interlocked.
Why is this so? Wouldn't one shackle be sufficient?
Thanks,
Ron AD7L
Hillsboro, Oregon
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
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