It is also VERY important to follow Yaesu's instructions for the tightening
sequence of the mast clamps. Properly done, it winds up tight and
well-centered on the rotator. Improperly done, it can break the clamps as
the bolts try to bend the cast clamps to fit the mast. If you tighten the
clamps to the mast first, then center and tighten the bolts attaching the
clamp to the rotator body, and LAST tighten the bolts holding the rotator
to the shelf, you should have no trouble. If you can't get the clamp
centered on the top of the rotator, there's something wrong with either the
mast or the rotator shelf, and you'll pay if you don't fix that first.
73, Pete N4ZR
At 09:57 PM 3/11/2009, K7LXC@aol.com wrote:
>
>In a message dated 3/11/2009 6:45:58 P.M. Pacific Daylight Time,
>towertalk-request@contesting.com writes:
>
> > My Yaesu G-1000DXA manual say's to drill thru the mast & put a bolt
> thru
>the rotator & mast to keep it (the mast) from turning in the clamp. I was
>told to do a survey here & get everyone's input on doing this as it might
>be a
>bad idea..
>
>
> Well, without being pinned, it would probably move harmlessly out of
>alignment. When you pin a mast to a rotator you're transferring the mast
>torque
>directly to the rotator and the next weak point in the system; usually
>gears.
>
> Since Yaesu gave you a long bolt with the rotator and the manual
> says to
>do it, I'd follow the LXC Prime Directive to "DO what the manufacturer says."
>
>Cheers,
>Steve K7LXC
>TOWER TECH
>
>
>
>
>
>**************Need a job? Find employment help in your area.
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