I take it then that you have never experienced the installation of a large
stacked array without a crane.
Old wives tales? Hmmm, most of those that I know have at least a Masters
degrees in an engineering discipline.
Plus NE Yankees are not known for spending money frivolously.
Cheers Yourself
Carl
KM1H
----- Original Message -----
From: <K7LXC@aol.com>
To: <km1h@jeremy.mv.com>; <towertalk@contesting.com>; <john@kk9a.com>
Sent: Saturday, August 25, 2007 1:21 PM
Subject: Re: [TowerTalk] Rohn 45 Question
>
> In a message dated 8/25/2007 10:00:45 A.M. Pacific Daylight Time,
> km1h@jeremy.mv.com writes:
>
>> Thats strange. Numerous YCCC and other serious contesters/DXers with
>> big
> stacked arrays have been using dual bearings for decades with a
> significant
> reduction in rotator failures.
>
> Reduction because of what? Reduction from what to what?
>
> What actual mechanical improvement does the additional mid-bearing
> make?
> More torque reduction? No. More vertical weight reduction? No, the
> weight's
> already on the top bearing. A psychological improvement? Probably. More
> ham
> radio old wive's tales? Probably.
>
> Cheers,
> Steve K7LXC
> TOWER TECH -
> Professional tower services for hams
> Cell: 206-890-4188
>
>
>
>
>
>
>
> ************************************** Get a sneak peek of the all-new AOL
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