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Re: [TowerTalk] installing monster masts in towers(and ? twothrustbearin

To: towertalk@contesting.com
Subject: Re: [TowerTalk] installing monster masts in towers(and ? twothrustbearings?)
From: "Alan NV8A (ex. AB2OS)" <nv8a@att.net>
Date: Wed, 08 Jun 2005 10:42:54 -0400
List-post: <mailto:towertalk@contesting.com>
On 06/08/05 10:04 am Alan NV8A (ex. AB2OS) tossed the following 
ingredients into the ever-growing pot of cybersoup:

> On 06/08/05 07:37 am David Robbins K1TTT tossed the following 
> ingredients into the ever-growing pot of cybersoup:
> 
> 
>>>    *Don't rely on the bearing's set screw to support any of the dead
>>>weight of the mast/antenna/coax.
> 
> 
>>Ummmm, it wouldn't be much of a 'thrust' bearing if the set screws couldn't
>>hold the weight of the mast.
> 
> 
> The thrust bearings I have seen are almost capable of supporting a heavy 

Oops! I meant " . . . almost *certainly* capable . . ."

Alan


> load, but they had no integral means of clamping the mast: there was a 
> separate "collar" secured to the mast by set screws, and this collar 
> then rested against the center part of the bearing.
> 
> In normal operation, wouldn't the rotator itself support most of the 
> downward force?
_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

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