This is the 4 page doc:
SP2049-5_BIG-GRIP_DE <dot> pdf
preformed.com/images/pdfs/Energy/Distribution/Guying_Products/Big-Grip_Dead-End/SP2049-5_BIG-GRIP_DE.pdf
http://preformed.com/images/pdfs/Energy/Distribution/Guying_Products/Big-Grip_Dead-End/SP2049-5_BIG-GRIP_DE.pdf
On Tue, May 22, 2018 at 9:30 PM, Charles Morrison <junkcmp@gmail.com> wrote:
> 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
>
> preformed.com/images/pdfs/Communications/Pole_Line_Hardware/Dead-ends__
> Accessories/Big-Grip_Dead-end/Big-Grip_DE-PLP_CommCatSec20.pdf
>
> http://preformed.com/images/pdfs/Communications/Pole_Line_
> Hardware/Dead-ends__Accessories/Big-Grip_Dead-end/
> Big-Grip_DE-PLP_CommCatSec20.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@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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>
>
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