Personally, I would not go through all of the trouble of installing the
system knowing that this conditions exists. It may fail at the worst
possible time and replacing the bearings is certainly easier while the guy
ring is on the ground.
John KK9A
To: TOWERTALK@contesting.com
Subject: [TowerTalk] K0XG ROTATION SYSTEM ADVIC E
From: Bill via TowerTalk <towertalk@contesting.com>
Reply-to: cqtestk4xs@aol.com
Date: Mon, 27 Feb 2017 14:24:37 -0500
About a year ago I bought a Rohn 55 rotation system from K0XG. After over a
year I finally got granted a permit to put the tower up. The tower is
scheduled to go up in 3 or 4 weeks and I was checking the rotating rings and
was in the process of using the grease gun on the fittings when I found
several
of the bearings in the rings were not rotating like the others. Of the
total
of 12 bearings, 3 were not moving as they should. 9 were able to be rotated
by
hand, but the 3 were tight. I used the grease gun on all the fittings
including the three bulky ones. I am now able to rotate the three by
gripping
with pliers with not much effort, but can not do it by hand.
Is this an issue? I called Richard at K0XG systems but have no heard back
from
him yet.
The three bearings do not appear to be damaged in any way and look just like
the others that rotate freely.
My thinking on this is it may not be an issue. With 1100 pounds of torque
on
each of the guys (5/16 EHS), plus the weight of the tower and antennas
(another
1000 lbs) the sheer weight will "force" the sticky bearings to rotate.
Has anyone had an issue similar to this? Anybody with advice, including how
difficult is it to replace these bearings, brand, where to find them etc.?
Thanks in advance for the help, and with a little luck KH7XS should be back
on
the air by mid April.
Bill K4XS/KH7XS
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