[TowerTalk] installing monster masts in towers (and ? twothrustbearings?)

[Alan NV8A (ex. AB2OS)]

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?