[Mldxcc] [NCCC] Rotator Mounting Question

[JVarney]

If you're going to pin a mast, the Sierra foothills are the place to do
it.  Not long ago I was researching the peak wind gust data that drives the
engineering standards and it turns out that the Sierra foothills from
Auburn south to Bakersfield is one of the most tower-friendly locations in
the United States.  Extreme high winds (over 60 mph) are very rare.
There's a weather station near Cool and the highest peak wind gust in the
last 10 years was only 50 mph.  The big exception to this is if you live on
a hilltop, a ridge line or at the edge of a bluff, then you will see high
winds due to the terrain speed-up effect.  Another exception are localized
freak gusts, like a thunderstorm microburst -- but again, the odds of that
happening on top of you are fairly small.

Interestingly, average wind and peak gusts are somewhat higher on the Sac
or SJ valley floor than in the foothills.  Of course wind gusts are very
high as you move uphill to the crest.

73 Jim K6OK





On Wed, Nov 15, 2017 at 9:54 AM, Jim Venneman <wx6v at sbcglobal.net> wrote:

> Greetings,
> Here at WX6V, I’m getting the antenna system up and running again, with
> the invaluable help of George - KI6CG and Dennis - WU6X.
>
> Now that the new Yaesu G-1000DXA rotor is installed in the tower - I’m
> wondering about the wisdom of following Yaesu’s instructions to pin the
> mast to the rotor. I did that but am having second thoughts. Seems like
> that may put undue stress on the rotor during windy conditions.
>
> I appreciate any insight others may have on this subject based on
> experience pinning masts to rotors.
>
> Thanks!!
> de Jim -WX6V-
> Auburn
>
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