It is possible to make a dust/rain cover for your thrust bearing and install
it as I have done. Farm supply stores sell a feed dish for animals, which is
made of material similar to an auto tire sidewall. I cut a hole in the
center equal to the mast diameter. I cut a slit from one side from the mast
hole to the edge. The dish is very flexible and I was able to twist it
enough to get it into place. You can use tape, silicone rubber or what ever
to seal the slit. I have also made them where the dish was cut in half and
used a strip of aluminum under each slit with screws thru the rubber into
the aluminum. There is no reason not to cover the thrust bearing.
73, Dan, N5AR
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com]On Behalf Of Doug Renwick
Sent: Saturday, November 01, 2008 6:56 PM
To: K7LXC@aol.com; w3ea@hotmail.com; towertalk@contesting.com;
draxfelton@gmail.com
Subject: Re: [TowerTalk] Thrust bearing re-grease
So how do we explain Wayne's experience where lightly greased did a much
better job than non-greased? Maybe there is no one set recommendation
but instead two. In a dusty environment - don't grease; In a less
dusty environment - grease. Any other conditions or suggestions anyone?
Let's hear your experience.
Doug
-----Original Message-----
No conundrum. The Rohn TB's should not be greased. The grease just
attracts
and hangs onto particulates and other junk and will accelerate wear.
Cheers,
Steve K7LXC
TOWER TECH
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