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[Towertalk] structural assumptions// bolts - Orion 2800

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Subject: [Towertalk] structural assumptions// bolts - Orion 2800
From: (Al Williams)
Date: Thu, 13 Jun 2002 11:06:20 -0700
----- Original Message -----
From: <>
>     I've installed numerous M2 Orion 2800 rotators over the years and
> invariably the mast turns eventually due to loosening of the mast clamp.
> you probably know, it's a couple of massive pieces of steel and with six
> bolts it doesn't seem likely that they'll loosen up but they do.

I seem to recall reading somewhere that it is desirable to have the
mast clamp slip for situations of a very large beam load and a high
wind; that it is better for an occasional slip than to "bust" the rotator.
What kinds of loads have slipped?


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