At 07:45 AM 7/11/01 -0400, Roger Borowski wrote:
>
>If your calculations are so close to the limitations of the G1000DXA
without the
>inclusion of the mast, and the mast weight pushes any safety margin over the
>limitations for this rotor, you should have used a larger rotator,
especially if
>you
>are uncomfortable now! Its never good practice to "engineer" mechanical
things
>to near their absolute limits. When doing so, short life and failures are
>inevitable!
But this assumes some plausible linkage between the K-factor and the
mechanical capabilities of the rotator, and there is none -- no real
antenna has all its mass located at its turning radius's distance from the
mast center.
As long as the weight of the mast doesn't cause the entire installation to
exceed the static weight limits of the G-1000, there's no reason to factor
it in, because the maximum "lever arm" for that weight is less than 2
inches.
73, Pete N4ZR
No, no ... that's WEST Virginia
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