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Re: [TowerTalk] Which thruse bearing?

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Subject: Re: [TowerTalk] Which thruse bearing?
From: "K8RI on TowerTalk" <>
Date: Tue, 12 Dec 2006 20:43:00 -0500
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> Trust me guys, the only way you MIGHT save the bearing is to have a 
> flexible low impedance strap connected to the tower and mast. You wouldn't 
> believe the number of bearings I've seen pitted, melted or

Why not run the mast through a sleeve a couple of feet long mounted between 
the tower top plate and a rotator plate below?  Actually the sleeve could be 
much longer depending on what would be convenient to install.

Due to movement and flexing the mast will almost always be in contact with 
it.  The area between the mast and sleeve is large and would not let much of 
a charge build up. It would tend to reroute much of the current that would 
have gone through the rotator.

Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2

welded together just from some welder striking an arc on machinery. any 
current flow will have an effect on the bearing.
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