[TowerTalk] Guying a vertical...???
Patrick Greenlee
patrick_g at windstream.net
Mon Aug 31 16:26:29 EDT 2015
Nylon is used on boats because it stretches like a rubber band and when
used for an anchor line does not transmit much shock to the deck
hardware. For hoisting sails (halyards) and for sheets (lines used to
control sails) Dacron is used for its minimal stretch (desirable
characteristic.) Steel cables (wire ropes) are sometimes spliced to rope
"tails" for better manual handling characteristics and the rope of
choice is Dacron.
Nylon is useful for towing a boat because of it stretchiness not putting
shock loads on deck hardware. Great heat is generated by inter-fiber
friction when the nylon is stretched and when wet the nylon shows its
heat by copious quantities of steam. Failure to let the tow rope
contact the water for cooling purposes can result in melting the nylon
rope leading to catastrophic failure.
I have considerable experience as a rag sailor and 10 years in maritime
search and rescue. I advise folks wanting rope for guys to avoid nylon
if it will be loaded such that it stretches and recovers as in variable
wind. Dacron is a far better choice.
Patrick NJ5G
On 8/31/2015 12:08 PM, Bryan Swadener via TowerTalk wrote:
> In other words, "double-braided Nylon" rope.The Nylon material does well with UV.The double-braided construction is bestto limit stretch. It is used a lot on sailboats.You'll find it in a marine supply store.McMaster-Carr sells it as well.
> I've used it for decades to support wire andvertical antennas.
> vy 73 es gl,Bryan WA7PRC
>
>
>
> > In a message dated 8/30/2015 8:11:33 A.M. Central Daylight Time,
>> co8dm at frcuba.co.cu writes:
>>
>> I am trying to get the "550 Paracord"...it is not available here
>> but will
>> see what i can do to get it...
>>
>> I read/hear many people used in verticals and it is strong and UV
>> resistant
>> and very cheap compare with Dacron and Kevlar.
>>
>> I have looking on ground, water and air here and it is not
>> available...unbelievable but it is the true !!!
>>
>> 73....Douglas, CO8DM
>
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