Tailtwister type rotors (even when new) do not have very much starting
torque. It's not uncommon for ice in the thrust bearing to cause
rotating failure during cold weather. I've had good luck solving this
problem by fabricating and installing a rubber boot to keep the water
(and therefor the ice) out to the bearing. If the bearing has a zerk,
keeping it greased goes a long way towards displacing the water as well.
73, Tim
Tim Jellison W3YQ/KL7WV
KL7WV Tower Service
304 704 1196
kl7wv@kl7wv.com
www.kl7wv.com
Message: 8
Date: Fri, 10 Apr 2015 00:17:42 -0400
From: "Gary Marks" <gmarks@neo.rr.com>
To: "Tower Talk" <towertalk@contesting.com>
Subject: [TowerTalk] Mast froze in cold temps and would not turn
Message-ID: <4D750207E2DD4C459B8282A6354CE59E@marksz2ougipy2>
Content-Type: text/plain; charset="iso-8859-1"
This past Winter, and as the year before, my mast froze in place when the
temperatures dropped below freezing. I had previously thought that the problem
was moisture getting into the rotator (Tailtwister II) and since it had been up
for 25 years, I decided last Fall to rebuild it.
This past Winter it froze and would not turn again when temps dropped below
freezing. The tower is a Hy-Gain HD-70.
Is there some area that requires lubricating between the mast and tower or
possibly the thrust bearing although it is a bronze bearing that shouldn't need
lubing. Could water be laying somewhere and not draining.
Any suggestions as to what the problem might be ?
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