Thanks to everyone who responded. Looks like I have it fixed.
I checked the tower for being plum, it is.
I did not know about lubing the upper ring. Have done so.
Result was that the base plate for the rotor that came with the tower and was
suppose to accept rotors was just a skosh off. I enlarged the holes enough so
that after connecting the poor mans uni-joint, loosely, and centering up the
rotor to the tower in. Then connecting the rotor mount plate to the post, I
made sure that the base of the rotor and the mount plate we're flat. Then I
looked up from the bottom to see for bolt hole alignment and found that I was a
bout 1/16" off. So the rotor was binding within the case and housing.
Works all better now.
Again, thanks for the help.
73
Ron
KK7GO
----- Original Message -----
From: Ron
To: towertalk@contesting.com
Sent: Saturday, April 14, 2007 9:04 AM
Subject: MA550 Tubular Tower Binding.
Hello All,
I have installed a US Towers MA-550 Tubular tower with the free standing rotor
base. I made sure the tower is plum. Connecting the rotor assembly has gone
well.
After all of that, the tower experiences binding. I have rechecked the tower
for being plum and that the rotor is lined up as best as I can. The tower will
swing 270 +/- and then stop. I can go the other way without any stoppage.
After a closer look at the thrust bearing, I think I see that the tower race
may not be sitting flush on top of the bear. I do not know what the ring at the
base of the tower that has a allen set screw is for and I have not messed with
it.
Any ideas to fix this problem without taking down the antenna? (It is a
Force-12 C-4)
I think I know the answer to this, but I am looking for any information that
might help.
Thanks,
73
Ron
KK7GO
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