[TowerTalk] Rotor plates

[Mark - AA6DX]

Regards to the rotor plate VS TB3 --
I used to have to drill new holes for mounting a TB3, like Froggy says.  On 
any major aerial setup, I would use the 2 thrust bearings, with the rotator 
not holding any weight, just the pointy bolts inside the bearing holder.... 
never ever had a problem with that .. Back to the plate, I would then cold 
spray galvanize the drilled to protect the little bared ferrous critters ... 
made me feel good, anyway ....   Another thing ... I took an AS25G to my 
local blacksmithy, whom I knew, and he built me one.   The second time 
around, when he understood what it was we were manufacturing, it was 
perfect, and we made a model out of cardboard for future use.  He got 
interested in my "projects", and made all sorts of clamps and platforms, 
tower bases and items to stick in the concrete to hold up the structure... 
was easier and cheaper than trying to get the original mfgrs. stuff.  Only 
problem with ye olde blacksmythe shoppes are that they try to "help" ... 
like make things BIGGER, so they will work BETTER .... `course they don't 
fit, and now you have to deal with his ego to get them re-sized.   Ahhh 
well, nevertheless,it's swell being a ham!
If you should happen to shop for a bearing to use in place of the TB3, when 
at the local bearings and transmission shop you will find one that will 
work.  Of the various issues, 2 things to note .. the dimensions, because 
the store does not normally deal with galvanized mast, which of course 
varies the size.  And .. get the right TYPE of bearing. Explain to a bearing 
expert where you are using the bearing, so as to get one that is designed 
for the proper thrust pressures .. downwards and lateral.  About the most I 
used to, in my tower climbing days of old, be able to save dollar wise over 
the TB3 was about 20 - 30 bux.  Living in a logging area (well, it used to 
be), I had access to bearing stores that had a lot of "stuff" that hams 
could put to use.

73  Mark  AA6DX

----- Original Message ----- 
From: <K8fu at aol.com>
To: <towertalk at contesting.com>
Sent: Thursday, November 04, 2004 1:34 AM
Subject: Fwd: [TowerTalk] Rotor plates


> Bob.......................
>
> Sorry to disagree with you but a TB3 will not align with the rotor plate
> AS25G. Hv one at my feet with redrilled holes.
>
> Froggy................K8FU