[TowerTalk] Tower/mast question

Ted Sarah w8tts@gwis.com
Tue, 23 May 2000 11:32:38 -0400

I currently have a Glen-Martin hazer on a tower with a Mosley
TA33-JR-N-WARC mounted just above a thrust bearing, which is about 3'
above the 
G-8000S rotor.  What I would like to do is add a mast to this, so that
there is 
an additional 10 feet above the top of the hazer thrust bearing, and
mount the 
TA-33 at the top of the mast.  This would do a number of things for me 
including being able to adjust the height of the antenna a little,
getting the
antenna 10' higher without adding tower, and as I do now being able to
lower the antenna if there is a high wind warning.  Yes I know, the wind
load on the antenna (96lbs at 80MPH) isn't much, but better safe than

Now my questions.  Is it safe to go that high above the thrust bearing,
which is a Glen-Martin, with a mast and antenna?  And, I'm looking at
using 1-1/4" Schedule 80 pipe for the mast, is this over kill?

TNX in advanced,

73 - Ted - W8TTS

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