2 bearings in the tower keep it vertical. Then just a rope from the lowest
antenna boom to one tower leg keeps it from rotating too much.
David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://www.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
> -----Original Message-----
> From: towertalk-bounces@contesting.com [mailto:towertalk-
> bounces@contesting.com] On Behalf Of Gene Smar
> Sent: Thursday, November 22, 2007 07:48
> To: Larry DiGioia N8KU; towertalk@contesting.com
> Subject: Re: [TowerTalk] mast and bearing
>
> Larry:
>
> You can use what folks who remove their towers' rotators for
> maintenance use to keep the mast stationary. Bolt two long steel angles
> to the mast with muffler clamps. Make the angles long enough to extend
> past two tower legs and rest the steel angles against those two legs
> before you tighten the clamp bolts. Note that the steel angles should be
> on opposite sides of their respective legs, i.e., don't rest the angles
> against the left side of both legs (that arrangement will allow the mast
> to turn clockwise.)
>
> Another possibility is to attach a muffler clamp loosely around the
> mast, then through a steel angle. Bolt the angle to the rotator shelf and
> tighten the clamp onto the mast.
>
> 73 de
> Gene Smar AD3F
>
>
> From: Larry DiGioia N8KU <towertalk@longwire.com>
> Date: 2007/11/20 Tue PM 07:32:09 CST
> To: towertalk@contesting.com
> Subject: [TowerTalk] mast and bearing
>
>
> I want to put a mast at the top of my Rohn 45 without installing a
> rotator (yet.)
>
>
> I can picture the top OK, the mast, bearing plate and thrust bearing,
> but what do I do where the mast comes down to the rotor shelf? Is there
> something else I can put down there to hold the mast temporarily? (It
> needs to be stationary, not "turnable.") Thanks guys.
>
> --
> Larry N8KU
>
> l o n g w i r e . c o m
> HF - DX - CW - Digital
>
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