> >Does anyone seriously believe they can overload a crank-up
> >tower and protect it with a wind-direction controlled rotor?
I was not among those discussing a crank-up, don't have one and am unlikely
to ever have one. My tower is fixed and both it and the beam will be rated
to take normal winds.
I am interested in the value of a warning system that flags the sort of
occasional sustained winds that might damage a large beam (and perhaps
stress the tower under it) unless the beam is turned to take it safely.
> >The wind can change directions in a hurry. It takes 15 to 20 seconds to
rotate 90
> >degrees, after the command is issued. de Tom N4KG
A big beam on a Rohn 25 tower can tolerate lots of wind and ice load for
15-20 second bursts (and longer). But to turn it (manually, or
automatically when absent from the shack) to minimize the impact of
sustained unusual winds would seem to make a whole lot of sense. Is this a
panacea, no. Isn't it a good piece of overall damage prevention?
--
73, DavidC AA1FA
"Faith is the posture that life is not a cruel joke played on us by no
one." Anonymous
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