For "non-conductive marine" you might look for plastic sheaves in carbon
fiber flanges, but I don't think that the little bump of a conductive
block would make much difference if attached to an insulated hoist line.
What will make a difference to the wire fatigue life is a larger
diameter sheave, so I would recommend something closer to 2" diameter.
Any sheave will be better than an insulator.
Grant KZ1W
On 4/30/2019 14:10 PM, CHARLES ALLEN via TowerTalk wrote:
Go to a West Marine store and get non-conductive pulleys. Sailers have used
them for years. They???re perfect for what you???re asking about. I???ve used
them successfully for years for insulated wire antennas.
73 de Chick, NW3Y
Sent from my iPad
On Apr 30, 2019, at 3:17 PM, N4ZR <n4zr@comcast.net> wrote:
73, Pete N4ZR
Check out the Reverse Beacon Network
at <http://reversebeacon.net>, now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.
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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