[TowerTalk] Fw: Rohn 45 Question

[Blake M]

The bottom bolts on a Ham IV I had would work loose every few months when I
had no load on it (I bought into the thrustbearing-takes-the-weight thing
when I was new...).  After I placed the full load of antennas and mast on
it, this problem stopped.  

Rotors have HUNDREDS of bearings in them.  Most thrust bearings I've seen
only have 10-20....  I'm no expert in physics, but where to put all the
weight seems like an easy decision to me.

73,
Blake N4GI   

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of K7LXC at aol.com

 
    Roger, thank you for cutting to the chase. You  are entirely correct but

hardly anyone is aware of this and only the Orion  even mentions it in their

owner's manual. While I haven't seen any  catastrophic failure trends with 
"floating" rotators, they are all designed to  have some preload to seat the

bearings in their races. 
 
Cheers,
Steve     K7LXC
TOWER TECH -
Professional tower services for hams



 



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