[TowerTalk] US Tower bottom rotation

[Michael K Bottles]

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

> On Dec 11, 2018, at 09:00, towertalk-request at contesting.com wrote:
> 
> Send TowerTalk mailing list submissions to
>    towertalk at contesting.com
> 
> To subscribe or unsubscribe via the World Wide Web, visit
>    http://lists.contesting.com/mailman/listinfo/towertalk
> or, via email, send a message with subject or body 'help' to
>    towertalk-request at contesting.com
> 
> You can reach the person managing the list at
>    towertalk-owner at contesting.com
> 
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of TowerTalk digest..."
> 
> 
> Today's Topics:
> 
>   1. Need help with MA40 installation and Tailtwister. (r young)
> 
> 
> ----------------------------------------------------------------------
> 
> 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
> 
> 
> ------------------------------
> 
> Subject: Digest Footer
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
> 
> 
> ------------------------------
> 
> End of TowerTalk Digest, Vol 192, Issue 19
> ******************************************