Hoping for some help to be able to use some older Philly. The factory tells me their grips won't work on "parallel strand" construction which is what I have, epoxy potted sockets are required. Howeve
Hi Grant! I worked at WDAE Radio in Tampa, FL back in the 80's and 90's. The engineer before me decided to try the new technology Philly-strand guy lines on the AM directional towers because they had
Sorry, I meant to send this follow-up to the entire reflector. The newer version Philly-strand is excellent - it has become the standard for guying insulated AM broadcast towers, and is also used on
I have been hesitant to talk about this, for fear of incurring the wrath of the purists, but since Lloyd went first... I obtained a quantity of new-old-stock of the old 15000 pound Phillystran a few
lines. towers, had Lloyd, Was this the Phillistran that did not have the inner strands in a rope configuration or were they just straight fibers? Thanks, Jim - KR9U _________________ Topband Reflecto
To clarify, it was the original straight fiber version of Philly-strand that we had problems with at WDAE AM 1250 KHz. We were able to successfully compensate for the inner strand slippage characteri
I would never design and especially never test for the maximum steady working load at a wind speed. The shock load of a bounce can strip the ends. I had a friend who lost a tower from a straight line
The bar idea would probably significantly reduce the allowable tension on the cable, similar to what knotting does, due to the force at each "bite point" weakening the cable. I suppose if the cable w
We sailors would wrap a line twice around the eye and then leave a longer tail and clamp that with some space between each clamp. The increased friction of 2 wraps around an eye/block/winch substanti
Thanks to all who provided info and suggestions. I plan to run some tests, starting with a modification to my 20T "H" frame press so I can tension test specimens up to 10k lbs or so and measure force
Large guy insulators may pass two turns of your Phillystran. They're always available on ebay for reasonable prices. If it would help, I have several guy insulators with one inch diameter holes that
The bar idea would probably significantly reduce the allowable tension on the cable, similar to what knotting does, due to the force at each "bite point" weakening the cable. I suppose if the cable w
As a very crude analogy what you want to be able to do is use a steel cable from the anchor through the middle of something like an automobile wheel, Then the Phillystran wants to take a couple of la
Another alternative is to wrap two turns of the Phillystran around a short length of three inch diameter steel pipe or tubing. Then pass a large shackle through the tubing to fasten it to the steel c
This discussion really belongs on TowerTalk, but.... If the straight-strand cable is bent around something, be it an insulator, guy grips, woven in and out of holes, etc, the fibers within the cable
Thanks to all who provided info and suggestions. It appears that a practical solution to be able to use "old" Phillystran might be to use wire rope saddle clamps at the right quantity and tightening