[TowerTalk] FW: MA550-MARB Question

Barry Merrill barry at mxg.com
Sun Apr 23 13:35:28 EDT 2006


-----Original Message-----
From: Bill Simpson [mailto:n5ya at earthlink.net] 
Sent: Sunday, April 23, 2006 11:56 AM
To: barry at mxg.com
Subject: RE: [TowerTalk] MA550-MARB Question

This collar is a locking eccentric and it has a hole in the side for a pin wrench (or whatever) to tighten it.  This centers it
automatically in the bearing.  Don't throw it away - just make it work.  It's a common way that it is done.  It's probably Peer

Bill, N5YA

-----Original Message-----
From: Barry Merrill [mailto:barry at mxg.com]
Sent: Saturday, April 22, 2006 20:29
To: 'Bill Simpson'
Subject: FW: [TowerTalk] MA550-MARB Question

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Richard M. Gillingham
Sent: Saturday, April 22, 2006 1:56 PM
To: towertalk at contesting.com
Subject: [TowerTalk] MA550-MARB Question

I have recently received my MA-550 with MARB rotator base from UST.  All arrived in fine condition.

Included with the base bearing is a collar with setscrew.  Collar is machined with an eccentric 'rabbet' (for lack of a better word)
in one of the two flat sides.

The bearing has a mating eccentric machined on it.  The shaft of the mast is not large enough to  enable the collar's setscrew to
fix it in position.

The OD of the shaft is 1 1/2", the ID of the bearing is 1 3/4".  Not exactly a sliding fit.  Can anyone tell me what's going on
here.  Do I just discard the collar and drop the shaft through the bearing and go?  Or is there a bushing or something I'm missing.
I received everything on the Bill of Lading.

Thanks in advance
Gil, W1RG

Naturally it's Saturday.  Can't call UST 'til Monday.


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