The thrust bearing is mounted mid-way down the tower...
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On Sep 8, 2013, at 3:31 PM, Grant Saviers <grants2@pacbell.net> wrote:
> Roger makes a good point about many rotator bearings needing some axial load
> and the high axial loads they are rated for.
> I would add a concern about the dead weight load imposed on the tower if a
> thrust bearing at the top supports the heavier mast sizes/materials
> discussed. All tower specs I've seen have a dead load spec in addition to
> wind load. Self supporting towers either fail in buckling, compression or
> tension of some structural element and excessive dead load may be a problem.
> IMO, put the mast weight on the rotator and use a true radial bearing (wood,
> plastic, etc) at the top. Then it is also easy to hoist the mast up a bit to
> remove the rotator. (aren't the goals to make it easy to work on the rotator
> and take loads off the tower??)
>
> Grant KZ1W
>
>
> On 9/8/2013 12:04 PM, Roger (K8RI) on TT wrote:
>> On 9/8/2013 1:08 PM, WA3GIN wrote:
>>> I used this method on the HDBX48 and its been up for over 30 years....
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