At 09:22 AM 6/12/96 -0700, Gary Nieborsky wrote:
>There are alternatives for thrust bearings if you don't want to go the Rohn
>route. First let me say this: I use TB-3's for my bearings and never had
>any problems. Mine came without zerks but that got fixed right away.
Interesting -- the local tower pro warned me off the TB-3 as mechanically
unreliable. Instead, he suggested the pointy-top section (this is Rohn 25)
with *no bearing at all*. Granted, my installation is under-stressed, but
it has been no problem at all so far, except for one ice storm when nobody's
antennas were turning. If/when I have to pull the rotor, I plan to pry the
mast up and tighten the setscrew that is part of the pointy-top. Sure is a
lot cheaper than a thrust bearing and/or a second accessory plate.
73, Pete Smith N4ZR