[TowerTalk] Mast Dimension

[K7LXC at aol.com]

In a message dated 5/17/2010 12:03:53 P.M. Pacific Daylight Time,  
towertalk-request at contesting.com writes:

>  Ok boys and girls, we are talking about a steel mast  here.  I am working
with a top section that has a 2" hole for the  mast.


    Two-inch ID exactly? What kind of tower is it?  What is the 
configuration of the top section? Is it a Rohn AG taper-top or  what? 

>  I have seen some comments about 1 7/8' diameter  mast.  When I order the
mast, it should be 2", correct?


If your hole is indeed 2" then a 2" galvanized  mast won't fit in there 
because with the layer of galvanizing it'll be bigger  than 2". 
 
    Two-inch hardware isn't the best thing to use on  a 1-7/8" mast but a 
small tribander will probably do okay since the size and  forces are pretty 
minimal. 

>  On a 50' tower, is ten foot of mast too much for a small  tribander and 
a 2 meter bean?
 

That's a pretty big bean. 

 
    If the tribander is at the top of the tower and  the 2M beam is at the 
top of the mast, with all other things being adequate,  it sounds fine to 
me. (But you didn't mention what kind of tower or what your  local windspeed 
conditions are.)
 
Cheers,
Steve    K7LXC
TOWER TECH