It sounds like a piece of the cross bracing may be slightly bent and engaging
against the other section as it travels up.
________________________________
From: Pete Raymond <n4kwpete@centurylink.net>
To: Towertalk@contesting.com
Sent: Monday, December 3, 2012 9:01 AM
Subject: [TowerTalk] Noisy US Tower HDX572mdpl
In the last few months as the tower reaches 65 feet or so it starts to make a
banging noise and seems to be jerking on it way up from 65 to 72 feet. I have
stopped going above 65 feet until I can get this resolved.
I first thought that since I have a long power run maybe the motor was not
getting enough current. I ran a temporary power run from a garage near by but
the problem persisted.
US Tower told me that most likely the problem was from the sections wanting to
gall (sp). and to lubricate the section legs with bees wax. That would be
fairly easy if you had good access to the legs.
It would almost require that the tower be laid over and extended with
additional support for the tower as it is extended. Plus the removal of all
the antennas.
I am wondering if anyone has experienced this problem and if there is a product
other than bees wax that could be used, negating the need for the tower to be
extended in a horizontal position.
73 Pete N4KW
This is my second US Tower and my first one never had this problem.
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