I will be undertaking a major tower project late this summer. The guys for this 155ft tower will be Phillystran with a short EHS chunk, about 10-20 feet long, near the ground where it attaches to the
Author: Andre VanWyk via TowerTalk <towertalk@contesting.com>
Date: Mon, 21 May 2018 20:14:10 -0500
Al, I did a 165ft rotating tower the exact way you describe. Those insulators will work just fine. I used big grips on both sides. 73 NJ0F Sent from my iPad __________________________________________
Simple thimbles will work also. I believe, since the new philly can be worked like a regular cable. My philly guys are the old style with epoxy potting at the end fixtures. I just used thimbles there
Al, IMO I like to use a 502 from EHS to Phillystran so if you have them use them My.02 Wayne W3EA Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 _______________________
There is nothing wrong with using the insulators however I am not sure what good they do since Phillystran is not conductive. I have been using back to back thimbles on 6700# and 11200# guys for deca
Author: Andre VanWyk via TowerTalk <towertalk@contesting.com>
Date: Tue, 22 May 2018 05:47:20 -0500
I agree John. No benefit from an insulating point but the guy grips do fit around the insulators nicely plus I had them just like Al. 73 NJ0F Sent from my iPhone _____________________________________
I use guy grips with back-to-back thimbles inside the loops. 73, Dick WC1M There is nothing wrong with using the insulators however I am not sure what good they do since Phillystran is not conductive
I am sure there is NO mechanical advantage of dual thimbles over and ceramic egg insulator. I my self have never witnessed the dual thimble configuration on and commercial towers. The ones with none
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
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
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
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
I am curious if you witnessed any commercial towers with Phillystran? Anyway I believe that commercial tower guys like to use shackles so you could put one between the Phillystran and EHS however I d
I think you're using the wrong size thimble (ex. the Big Grip for HPTG 6700I required a 1/2 thimble). John KK9A Chuck Dietz w5prchuck at gmail.com The problem with using two back-to-back thimbles is
Interesting discussion. Thanks for the feedback so far. Yes, a thimble to thimble connection would work since there is no RF reason to put a insulator in there since Philly is non-conductive. That wa
I'm not convinced that a preform/thimble combo MUST be mated to a straight cylinder, even though the examples shown don't include anything but. I've seen BIG preforms installed through a closed link
Unless the cylinder has the same radius as the thimble it will still only hit or connect in a very small area. At what tension will the heavy duty thimble crush? I doubt most hams will see this much
One might presume that the thimbles supplied by guy grip makers will not deform loaded to the rated strength of the grip. They are definitely heavy duty. I've never seen a hardware/big box store with