[TowerTalk] bottom rotation of MA needles

[M. Kim Bottles]

Sorry that should be K7LXC for information about alignment of rotator.
(NOT W7LXC)

> On Dec 12, 2018, at 9:00 AM, towertalk-request at contesting.com wrote:
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> Today's Topics:
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>   1. US Tower bottom rotation (Michael K Bottles)
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> Message: 1
> Date: Tue, 11 Dec 2018 09:12:57 -0800
> From: Michael K Bottles <k7im at icloud.com>
> To: towertalk at contesting.com
> Subject: [TowerTalk] US Tower bottom rotation
> Message-ID: <FA0D6D71-ECFF-4D7E-AE2C-EDFE5651A8C1 at icloud.com>
> Content-Type: text/plain;	charset=us-ascii
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> FWIW
> 
> I have had several of these towers (currently I have a MA-770). They need a flexible coupling between the rotor and tower stub to compensate for alignment. Perfect alignment is very hard if not impossible to attain. Steve Morris W7LXC would be a good source of information on this topic.
> 
> Kim - K7IM
> 
> 
> 
> Sent from my iPad
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>> On Dec 11, 2018, at 09:00, towertalk-request at contesting.com wrote:
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>> Today's Topics:
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>>  1. Need help with MA40 installation and Tailtwister. (r young)
>> 
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>> ----------------------------------------------------------------------
>> 
>> Message: 1
>> Date: Mon, 10 Dec 2018 23:16:02 -0500
>> From: r young <ryoung158 at gmail.com>
>> To: towertalk at contesting.com
>> Subject: [TowerTalk] Need help with MA40 installation and Tailtwister.
>> Message-ID:
>>   <CAJ17cTZusi7ysZuncMjhtAkPfJvS2Swgf+z8AjX2SthW5XP+Mg at mail.gmail.com>
>> Content-Type: text/plain; charset="UTF-8"
>> 
>> I have an MA40 with MARB base and tilt feature so my Tailtwister is at the
>> bottom.
>> I don' know if the problem I have is new or existed and I missed it when
>> installed.
>> 
>> The rotator drive stub that protrudes out of the bottom should go in the
>> the center of a pipe secured to the Tailtwister. A bolt goes through the
>> pipe and the of the tower  stub so the entire tower rotates.
>> 
>> I noticed that the drive stub is not center in the middle of the pipe, so
>> when the tower turns there is a wobble.
>> 
>> I loosened bolts on the  Tailtwister but it does not move from its platform
>> on the MARB 40.  I cannot find a way to center it. The drive hub is off to
>> the side a bit and this causes the wobble.
>> 
>> Anyone have any experience with this?
>> .
>> 
>> Like I said , I do not recall if I centered it when we put it up.
>> 
>> I saw the wobble and became concerned.
>> 
>> Hope someone can help.
>> 
>> Tks very much.
>> 
>> 73,
>> 
>> Gerry
>> 
>> K1NY
>> 
>> 
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