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[Towertalk] Knots for Guys

To: <>
Subject: [Towertalk] Knots for Guys
From: (N2TK)
Date: Mon, 6 Jan 2003 09:49:27 -0500
My understanding from a metal cable company is that if you use a thimble on
a guy cable you lose 20% of the strength of the cable at that point. If you
weave the end of the cable you lose 5% of the cable strength. Is this true?
Also, what strength do you lose when using a guy-grip?

-----Original Message-----
[]On Behalf Of Mike Gilmer, N2MG
Sent: Monday, January 06, 2003 08:44
Subject: [Towertalk] Knots for Guys

I would never use a knot in this application.  Phillystran is to be
terminated with grips designed specifically for Phillystran.

But why not ask them yourself? (almost worthless)

For grips, go to
and look up "Phillystran" in their search tool

Gee, even PLP refers to it as Phillystrand on this search results
page...there is no "D" at the end; they should know better!

And yes, you need turnbuckles - they are mandatory to tighten the
cables to proper tension - especially given that they stretch/relax
over time.

73 Mike N2MG

K3BZ wrote:
> There was a lot of discussion recently about knots, particularly
> the bowline for making loops and using when the knot would remain
> under tension. I want to use Phillystran to guy a 40 foot aluminum
> tower that I bought, and I'm wondering if I can use bowline knots
> to secure the line around the thimbles. I would definitely secure
> the line ends to the main line (maybe tape them?) and the guys would
> be under constant tension so the bowlines shouldn't slip.

> Secondly, with Phillystran, would I still include a turnbuckle in
> each guy to allow for adjustment, tightening, etc?

> Last, would I have to use an aluminum thimble at the tower so it
> would not be disimilar metals?

> Advice appreciated.... Jerry

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