[Towertalk] New Rotator In Place; Mast Now Binds

[Jim White, K4OJ]

one thing which I don't think has been mentioned is that mebbe you got a 
poorly produced section or rotor plate - on the secdtion might be the 
top is not "on center" - if your mast pipe stays close to the same side 
of the tube on the pointy top throughout the whole rotation you need to 
look at possible shimming the rotor plate away from the tower leg that 
the mast is favoring - or perhaps try rotating the rotor plate 120 
degrees and see if the same degree of closeness to the same side of the 
pointy tube still exists...

I know - easy to say for the guy who doesn't have to climb and fix it!

Justa thought - Rohn is not high spec stuff - they occasionally produce 
some stuff on Friday afternoons and Monday mornings, too!

Hope to see everyone in the Ten Meter contest this weekend - signing K4FCG

73,

Jim, K4OJ


Dale L Martin wrote:

>I just got off the tower after adding two more 3/64" shims to the existing 2
>shims to pad the 1.875" mast to look like 2.0625 to the rotator clamp.
>
>The rotator now rotates smoothly both ways south-to-south.
>
>Even though it's running smoothly now and the mast is supposedly centered,
>the mast still looks ominously close to one side of the pointy-top tube.
>
>I didn't have a way to accurately measure the centering of the rotator on
>the plate and under the tube, but the plate looks flat and the bent up
>corners are each against the legs.
>
>Many thanks to all who sent me notes.  This reflector's the best around.
>
>Now to build a 2-vertical phased array for S.A.
>
>73,
>dale, kg5u
>
>
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