[TowerTalk] Weight on ends of a OCF diploe

[Roger (K8RI) on TT]

5/16ths is definitely easier to pull and much more comfortable on the 
hands when pulling hard.
Mature trees should not grow around rope, but girdling a tree (running a 
small rope all the way around) can kill a tree of any age.
I usually put even 5/16ths inside a half inch air hose. I normally use 
the yellow hose with a very smooth outside surface.  I've had no 
problems even with growing trees large enough to serve as a relatively 
stable anchor point. This is not a dynamic anchor like a pullet but can 
be a good anchor for a pulley using an "S" hook or carabiner.(sp?)

73

Roger (K8RI)



On 8/12/2016 Friday 2:37 AM, Jim Brown wrote:
> On Thu,8/11/2016 10:02 PM, Roger (K8RI) on TT wrote:
>> 5/16ths is over 1700# strength, but a bit more expensive. 
>
> FWIW, I use the 5/16-in rope because it's easier to grab hold of to 
> pull tension on my very high dipoles. 3/16-in (and even 1/8-in) is 
> plenty strong enough for most antennas that aren't very high.
>
> Wes, N7WS, described a system similar to one I rigged here soon after 
> I moved here, with help from Ira, K2RD, and others. I replaced it with 
> the system of pulleys that I now use because it allowed me to get the 
> antennas higher, and it also allowed me to rig a 20/15/10 fan in line 
> with the 80/40 fan that had loading coils for 160.
>
> The system that Ira showed me how to rig had a continuous loop of 
> 5/16-in that he launched over a limb with his pneumatic tennis ball 
> launcher (he cleared the tallest redwood on my property  -- about 175 
> ft -- by at least 10 ft on the first shot). To that loop he attached a 
> pulley, then pulled the support wire through the pulley, then pulled 
> the pulley it all the way to the top.
>
> That system survived at least one winter without a weight, because 
> there was enough "give" in the way the pulley was rigged to allow for 
> sway, but I'm not confident that the loop rope would have survived 
> over that limb for 10 years. :)  Wes's experience suggests otherwise.
>
> 73, Jim K9YC
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk


-- 

73

Roger (K8RI)


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus