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[TowerTalk] Rotor Shims

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Subject: [TowerTalk] Rotor Shims
From: (Steve Maki)
Date: Wed, 31 Dec 1997 13:52:58 -0500
K7LXC wrote:

> Hi, Pete --
>      Good one! This will equalize everything down the rotator/mast train by
> making it 'self-leveling'. It should minimize any mis-aligned/bent rotator
> plate problems. This'll work for bind in thrust bearing alignment too. You
> might not be able to eliminate the bind but you can sure minimize it.
>      The AS25G accessory/rotator plate is not a precision piece of hardware.
> As has been pointed out already, it's just a bent piece of steel. One thing
> that may help is to use your bubble level on it when you're installing it.
> Doing this instead of measuring or eyeballing its location may be an
> advantage. But chances are you may still want to go through the above
> excercise to get it mostly plumb.

This is another reason to, if possible, locate the rotator further down the
top section.  The flex in most mast material will allow a slightly off-center
and not-quite vertical rotator to operate freely if it is say, 5' below the
support tube.  If located just under the support tube, you have problems. 

Steve Maki K8LX

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