Date: Wed, 04 Mar 2015 22:02:50 -0500
From: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
To: towertalk@contesting.com
Subject: Re: [TowerTalk] "...//..winds here in the winter that are
pretty bad."
I figure any rotator I use should be capable of turning the antenna
regardless of winds. After tearing up a few of the ham series and an
HDR-200, or 300 (forget which). It looked rugged, but I released the
brake on a windy day. It wen't past the stops and tore up 4, of 5
pigtails. That's when the PST61 went up. That had a design problem
with the top seal, but it'd turn and stop normally regardless of the wind.
73
Roger (K8RI)
## Its an HDR-300. It would go a long way to helping things out if the damned
yagis were designed and engineered correctly in the 1st place. Simple matter
to add a torque compensator plate down at REF end of the boom. Fellow
across town was destroying T2Xs, 3 in a row on his long boom 20m yagi,
with eles bunched up at the REF end. Of course it was mounted in the usual way
at the CG. I designed the tq comp plate for him, using Yagi stress. End of
problems. With the rotor removed, and on a 35 mph windy day, it could be
turned by hand in any direction..and it would stay put. Without the tq comp
plate it would weather vane, and rip up the t2x.
## If you insist on dragging a parachute behind your car, you will require
another
350 hp.
## another method of tq comp is to mount at center of boom, then use a counter
weight at the DIR end of the boom..... light end of the boom.
## The tq comp plate is so simple its beyond me why its not used more often.
You can
easily reduce the tq down to virtually nothing.
Jim VE7RF
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