[TowerTalk] Battle of the bearings

[Roger (K8RI)]

john at kk9a.com wrote:
> The rotator has a bearing which should suffice in most installations and 
> there are no one bearing fulcrum installations unless the rotator is mounted 
> above the tower.  If the rotator bearing is inadequate, perhaps one should 
> invest in a larger rotator.  I would be more concerned about the upper 
> bearing.  I tried using a Rohn TB-3 bearing once, the first one that I 
> purchased did not  turn freely by hand and I returned it for replacement. 
> The replacement got tight after several months in Aruba and I switched to 
> another manufacture's bearing.
>
> John KK9A
>
>   
Please watch the attributes, you quoted the the text I answered, but the 
header makes it look like It's an answer from me. <:-))

73

Roger (K8RI)
> To: "Roger (K8RI)" <K8RI-on-TowerTalk at tm.net>
> Subject: Re: [TowerTalk] Battle of the bearings
> From: Mike <nf4l_NO_SPAM at nf4l.com>
> Reply-to: nf4l at nf4l.com
> Date: Sat, 15 Aug 2009 21:38:51 -0400
> List-post: <towertalk at contesting.com">mailto:towertalk at contesting.com>
>
>
> <snip>
> TWO bearings would keep the side loads off the rotor (or a long sleeve,
> or two short sleeves.). A single bearing is just gonna be a fulcrum.
>
>
> 73, Mike NF4L 
>
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