[TowerTalk] US Tower bearing measurement needed

[K7LXC@aol.com]

In a message dated 04/29/2000 2:09:50 PM Pacific Daylight Time, 
DMartin560@aol.com writes:

> << Rather then bolt something just put a 2
>   " mast in the through the top of the tower.  There are 2 set screws that 
>  will hold it in place.
>   
>   Skip, KJ6Y >>
>  
>  Hi Skip and thanks for the reply,
>  Thought about that also.  Didn't want to rely on what looked to be 5/16" 
>  bolts as set screws to support the vertical weight of the antenna and 
mast.  
> 
>  The catalog weight says it's 23 lbs, but it's 22 feet long with the 
support 
>  pipe diameter of 2 3/4".
>  
      Most masts can be clamped above the thrust bearing with an appropriate 
U-bolt. The weight then rests on the U-bolt.

      Another option is to grab the mast inside the tower with a sling choker 
and comealong/cable puller. Tighten it up until you've got the weight and 
loosen the TB screws/bolts.

      Even 5/16 bolts should hold the weight if they can be properly 
tightened. It'll only take a little bit of tension to hold everything in 
place. The load you're talking about (less than 30#) is pretty small in the 
overall scheme of things.

Cheers,   Steve     K7LXC
Tower Tech

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