[TowerTalk] Thrust Bearing adjustment

[Roger (K8RI) on TT]

On 4/10/2014 10:08 PM, Jon Pearl - W4ABC wrote:
> Funny... I just had this very same conversation concerning loaded 
> masts on folded over towers with Mike, VE3YF.
>
> Rather than using a completely empty rotor plate just above the rotor, 
> I'm going to bolt a square piece of UV resistant UHMW (Tivar) with a 
> center hole slightly larger than the outside diameter of my 2" DOM 
> mast, in the space where a bearing would normally be utilized.

One with a snug, but not tight fit can make a good thrust bearing as can 
oil soaked hardwood.

73

Roger (K8RI)

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> Jon Pearl - W4ABC
>
>
> On 4/10/2014 7:29 PM, john at kk9a.com wrote:
>> If your concern is containing the mast for rotator swaps K7LXC has a 
>> great
>> suggesting of just installing a lower rotator plate with no bearing.  
>> Towers
>> are so imprecise, I cannot imagine trying to line up three bearings 
>> and not
>> have it bind.
>>
>> John KK9A
>>
>> To:     <towertalk at contesting.com>
>> Subject:     Re: [TowerTalk] Thrust Bearing adjustment
>> From:     "Ed Muns" <ed at w0yk.com>
>> Reply-to:    ed at w0yk.com
>> Date:     Thu, 10 Apr 2014 14:35:21 -0700
>> The second, lower, thrust bearing is VERY handy when you need to 
>> remove the
>> rotator without first removing all the antennas on the mast above the 
>> top
>> thrust bearing.
>>
>> Ed W0YK
>>
>>
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