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Re: [TowerTalk] Joining Phillystran and EHS

To: "Jan Erik Holm" <>, <>
Subject: Re: [TowerTalk] Joining Phillystran and EHS
From: "Mark Robinson" <>
Date: Fri, 23 Jul 2010 11:57:58 -0400
List-post: <">>
The thing that worries me is that the big grip for phillystran is designed 
for use with a thimble. I know that when using big grips with ehs they have 
two sets of starting marks. One is for use with a thimble and a second set 
leaves a longer loop and is designed for use with insulators. The longer 
loop means less wraps and less friction on the guy wire but the ehs big grip 
has been designed for this purpose. It looks like the phillystran big grips 
only have one set of marks because they are designed to be used with 
thimbles only. I am thinking that I should use thimbles and big 5/8 shackles 
especially after reading Installation Guideline 9B where they are calling 
out for a large shackle pin to avoid collapse of the thimble under heavy 

Mark N1UK

----- Original Message ----- 
From: "Jan Erik Holm" <>
To: <>
Sent: Friday, 23 July, 2010 11:48 AM
Subject: Re: [TowerTalk] Joining Phillystran and EHS

Sorry guys I just found it with Google, looks like
a good way to do it. Forget what I did ask.

73 Jim SM2EKM
On 2010-07-23 17:28, Jan Erik Holm wrote:
> Is there a picture somewhere how this looks, I don´t know
> what a 502 insulator looks like.
> I have to go this route myself pretty soon, if nothing else
> to use all the Phillystran I once did buy.
> Jim SM2EKM
> -----------------------
> On 2010-07-23 16:57, Tim Duffy K3LR wrote:
>> Hello Mark,
>> I have had good success with a 502 insulator - to make the Phillystran to
>> EHS transition. I think the 502 is a safer route than shackles and 
>> thimbles
>> that might cause either preform (Phillystran or EHS sides) to distort 
>> over
>> time.
>> 73 and be safe,
>> Tim K3LR
>> -----Original Message-----
>> From:
>> [] On Behalf Of Mark Robinson
>> Sent: Friday, July 23, 2010 9:43 AM
>> To:
>> Subject: [TowerTalk] Joining Phillystran and EHS
>> I am getting ready to assemble the top guys on my rohn 45 tower. I intend 
>> to
>> use a short length of 1/4ehs at the top and maybe 27 feet of 1/4 ehs at 
>> the
>> bottom. I will be using a length of Phillystran HTP667001 in the middle. 
>> I
>> will use the PLP2755 big grip on the philly with a 1/2 inch thimble. I 
>> will
>> be using a BG2144 big grip on the 1/4 ehs together with a 3/8 thimble. My
>> question is how to join the ehs and the philly together. Can I just use 
>> the
>> two thimbles looped inside of each other at the joint or do I need a 
>> shackle
>> or maybe a 502 insulator between the two big grips.
>> The shackle would need to be fairly substantial to have a working load 
>> near
>> to that of the cable at 6000 pounds. How have other people made this
>> connection?
>> 73 Mark N1UK
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