John,
As suggested a small piece of angle iron “ I mad mine out of aluminum angle
and drilled it for numerious tower legs “
You only need to raise the mast ¼” to remove the rotor
Wayne ,W3EA
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
From: K9MA<mailto:k9ma@sdellington.us>
Sent: Thursday, December 26, 2019 6:08 PM
To: towertalk@contesting.com<mailto:towertalk@contesting.com>
Subject: Re: [TowerTalk] Lift Mast to Replace Rotator
You really don't want to do that without bracing the mast with something
like the braces Tim suggested. Years ago, I made something similar out
of steel angle stock and U-bolts.
BTW, although the DXE page shows two braces in one photo, it appears
they are sold individually. While one might prevent rotation, at least
two would be required to prevent the mast from tilting and stressing the
thrust bearing, unless you stabilize the mast with ropes, or something
else. I suppose, if there's only one beam on the mast, you could slide
it down to right on top of the thrust bearing before removing the rotator.
73,
Scott K9MA
On 12/26/2019 16:31, Charles Gallo wrote:
> Put a clamp around the mast, tight against the thrust bearing to hold the
> weight, pull the rotor. If you need more clearance to slip the new rotor in,
> put a bottle or scissor jack under the mast at that point, lift, loosen the
> clamp, slide it down, reclamp, remove jack.
>
> --
> 73 de KG2V
> Charlie
>
>> On Dec 26, 2019, at 5:03 PM, John Sloop <hawkeye78299@gmail.com> wrote:
>>
>> I'm looking for suggestions to lift mast, with antennas just enough to
>> replace the rotator, which is a Ham III. Rotator is shelf mounted about 2
>> feet below the top thrust bearing. All ideas are appreciated.
>>
>>
>>
>> John S.
>>
>> AA0ES
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
--
Scott K9MA
k9ma@sdellington.us
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|