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Re: [TowerTalk] Lifting a mast off the rotator

To: Les Kalmus <w2lk@bk-lk.com>
Subject: Re: [TowerTalk] Lifting a mast off the rotator
From: Ron Freeman <ron@k5mm.com>
Date: Sun, 24 Apr 2016 22:14:06 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
 I use a cheap scissor jack positioned on the top plate.  I either jack against 
the mast plate on the lowest antenna or a step bolted to the mast.  

Sent from my iPad

> On Apr 24, 2016, at 9:11 PM, Les Kalmus <w2lk@bk-lk.com> wrote:
> 
> I came home from Visalia to find my antenna system freewheeling. The mast 
> holds 4 yagis, one of which is very large, and is rotated by an Orion rotator.
> If my suspicions are correct, the problem is the little 1/4" bolt holding the 
> shaft up into the bottom of the mast clamp has loosened and allowed the shaft 
> to fall.
> 
> The tower is lowered and the antennas are tied off to a tree. I have removed 
> the mast clamp and now I have to raise the mast about 1/2" to free the 
> centering block so I can remove it to inspect that bolt.
> I have a come along with an additional block with which I can lift the mast, 
> but the carabiner I have won't fit into the small space between the centering 
> block and the inside of the mast.
> 
> Any suggestions on a way to either hook the mast from the bottom or to clamp 
> to it so I can raise it? We're talking maybe 400 lbs in the complete antenna 
> system.
> I have done this in the past but I think I didn't have the centering block at 
> that time so it was easier to get something hooked into the bottom of the 
> shaft.
> 
> Les W2LK
> 
> 
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