[TowerTalk] Pulley at the top corner of an inverted L

[n6sj at earthlink.net]

Pete,

My experience with that exact arrangement is that the wire through the pulley finally frays, and it breaks.

Took about 2 years for my Inverted L to break.  I had a pulley on a Douglas fir limb up about 80 feet.  I used 16 gauge THHN Home Depot wire, which may have been a little too light.  But with the limb swinging back and forth in the winter storms, the friction shredded the wire.

I replaced it with an insulator on a rope through the pulley.  The apex of the Inverted L is on the bottom of the insulator.  The rope I use is from HRO and has held up over pulleys with counterweights for many years.

To maintain tension on the far end of the horizontal part of the L, I use another pulley, rope, and counterweight on another tree.

73,
Steve
N6SJ


-----Original Message-----
From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of N4ZR
Sent: Tuesday, April 30, 2019 12:18 PM
To: TowerTalk <TowerTalk at contesting.com>
Subject: [TowerTalk] Pulley at the top corner of an inverted L

73, Pete N4ZR
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I've just got a rope up 60 feet or so in a maple tree, and I'm ready to string an inverted L.

My question - I have several stainless steel pulleys with about a 1" 
sheave. If I insulate the pulley from the haul-up rope, is it a good/bad/indifferent idea to string the inverted L wire (14 copper,
stranded) through the pulley rather than just using an insulator to make the bend.  It strikes me that having the bend move, however slightly, on the wire is likely to be less destructive than just having a sharp bend moving through an insulator end..

Comments?

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