[TowerTalk] Pinning my mast in rotator clamp

[Dave Johnson]

I would say that it depends on how much wind load you will have attached to 
the rotor mast or how long your antenna boom is.  If you have one antenna 
with a boom of 30' or less you would likely never have a problem.  However, 
with long boom antennas, it is a pain in the you know where when you must 
climb the tower and move the antenna back where it was after a strong wind. 
I had a friend that had a KLM 20 meter Big Stick with a 60' long boom.  He 
had a bolt through the rotor and mast but that antenna kept shearing off the 
bolt.  It never damaged the rotor.  When he moved, I took his antenna and 
tower down.  When I took the mast out of the rotor, a hand full of broken 
bolts came out of the mast.

If you decide to drill the mast, put it in the rotor and drill one side then 
move the drill to the other side and drill again.  Don't try to drill all 
the way through both halves of the mast from the same side.

73,  Dave - K4SSU



----- Original Message ----- 
From: "mrlogs" <mrlogs at verizon.net>
To: <towertalk at contesting.com>
Sent: Wednesday, March 11, 2009 8:19 PM
Subject: [TowerTalk] Pinning my mast in rotator clamp


> Hi All..
>  My Yaesu G-1000DXA manual say's to drill thru the mast & put a bolt thru 
> the rotator & mast to keep it (the mast) from turning in the clamp. I was 
> told to do a survey here & get everyone's input on doing this as it might 
> be a bad idea..
>                         Thanks for your input!
>                            73'..Tom  N3ZC
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