[TowerTalk] clamp on trhust bearing

[Jorge Diez - CX6VM]

Hi Al

This is a good option, just need to figure out how to support the thrust
bearing in this position. I have one in stock so not problem about that

We made to top of the tower to place a thrust bearing on top of it.
Unfortunately in a urgent need to change rotor before CQWWSSB, with the
wrong people, cause this damage

73,
Jorge


-----Mensaje original-----
De: TowerTalk [mailto:towertalk-bounces at contesting.com] En nombre de Al
Kozakiewicz
Enviado el: domingo, 01 de noviembre de 2015 11:42 a.m.
Para: towertalk at contesting.com
Asunto: Re: [TowerTalk] clamp on trhust bearing

Why not mount the bearing inverted, i.e. inside the tower? That requires
"only" disconnecting the mast from the rotator. If nothing else, thrust
bearings aren't expensive and it would at least provide relief for a year or
two until you could plan a "real" replacement.

Al
AB2ZY

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
Patrick Greenlee
Sent: Sunday, November 01, 2015 9:07 AM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] clamp on trhust bearing

Jorge, amigo, sorry but I can't recommend a two part bearing to use without
the grand hassle of pulling the mast. You might be able to "surround" your
mast with "rollers." You will need at least 3 rollers (wheels with their own
bearings) arranged at 120 degree intervals.  If it were me, I would go for
two levels of 3 rollers per level to distribute the force such as you would
avoid denting or crushing the mast due to sharply concentrated force at the
contact areas.  I would recommend considering placing a section of
telescopic fitting tubing to strengthen the mast at the points of contacts
with the rollers.  This reinforcement would have to be split into two pieces
to be put onto the mast for the same reason you can't just easily swap out
your failed bearing assembly.

Other that something along the lines of the above, I have no clue how to
avoid the major pain of taking it all apart.

Good luck amigo,

Patrick        NJ5G

On 11/1/2015 5:20 AM, Jorge Diez - CX6VM wrote:
> Hello
>
>   
>
> I have a yaesu 065 thrust bearing broken up in the tower, after a 
> rotor replacement.  Inside a mast with two antennas
>
>   
>
> I don´t want to remove all antennas and mast to replace the thrust 
> bearing from 200 ft tower, so wondering if there´s a CLAMP ON thrust 
> bearing or crapodine I can get to replace it without need to remove 
> all antennas and mast
>
>   
>
> Thanks,
>
> Jorge
>
> CX6VM/CW5W
>
>
>
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