[TowerTalk] Pinning my mast in rotator clamp

[Pete Smith]

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 at aol.com wrote:
>
>In a message dated 3/11/2009 6:45:58 P.M. Pacific Daylight Time,
>towertalk-request at 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
>
>
>
>
>
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