I believe for the same tensile load, phylistran stretches more than the
equivalent (same load
rating) EHS steel guy. Kurt K7NV did some really interesting analysis on
this:
http://k7nv.com/notebook/towerstudy/towerstudy1.html
And here is some specific information comparing the properties of steel,
kevlar, and fiberglass
guy material:
http://k7nv.com/notebook/topics/guycable.html
73 de Mike, W4EF.................................................
----- Original Message -----
From: "Jim Lux" <jimlux@earthlink.net>
> From: "Roger K8RI on Tower" <k8ri-tower@charter.net>
>> Why not just use one of the Kevlar cables such as Phylistran, or the one
>> AES sells just called Kevlar guy line?
>>
>> Nothing is perfect, but so far I like the light weight and easy handeling
>> of the Kevlar lines. Does Polyrod have an advantage over this?
> What's the stretchy-ness of Polyrod vs aramid (Phillystran, Kevlar, etc.)
> vs
> steel? That has an effect on the overall performance.
>
_______________________________________________
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.
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