[TowerTalk] Joining EHS Guy To Philly Guy

Charles Morrison junkcmp at gmail.com
Tue May 22 21:30:02 EDT 2018

If you read the info provided with PREFORMS / BIG GRIPS, you see that all
curved surfaces (inside thimbles and the curve side of shackles) should be
mated to flat /straight surfaces like: (equalizer plate bolts, the rod/pin
of a shackle.)  See page three of this document. Here's the link:
   Filename  Big-Grip_DE-PLP_CommCatSec20 <dot> pdf



The only exception to this rule is you may use a curved shackle to a curved
shackle. This guide also suggests that you should not force a thimble into
the downward end of a torque bar, but use the pin/rod of a shackle.

Review the "arrangement" illustrations shown on page 4: Arrangement A
through G.

-Charlie N1RR

On Tue, May 22, 2018 at 7:56 PM, Steve Maki <lists at oakcom.org> wrote:

> Only if you use too-small thimbles. Properly sized thimbles for your
> properly installed big grip will be...just right! Big enough radius so it
> doesn't fall out, and strong enough to not compress from wire tension.
> BTW it's common to terminate a big grip (with thimble) to a pin shackle
> for attaching to guy weldments, etc. I usually use a shackle for coupling
> my non-conductive guy to the bottom EHS wire, just for a little extra
> flexibility.
> -Steve K8LX
> On 05/22/18 19:11 PM, Chuck Dietz wrote:
> The problem with using two back-to-back thimbles is the radius is too
>> small. It needs to “wrap around” something larger. Many thimbles would end
>> up squeezing together so that the guy grips would be out of specs by the
>> small radius.  It would only be slightly better than guy grip to guy grip.
>> Also, when you need to take the guy loose, what will keep the thimbles from
>> coming out? If you really clamp down on the guy grip, it will be out of
>> specs.  Maybe I am not acquainted with the type of thimbles you are talking
>> about. You would need to check the thimble specs.
>> Using the insulators keeps everything in spec, but they are heavy.
>> Chuck W5PR
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