[TowerTalk] Noob question re: Thrust Bearings

[john at kk9a.com]

I am visualizing a simple rectangle block with four mounting holes and a
large hole bored in the center maybe .010 larger than the mast   K3EJJ
manufactures split nylon bearings with a Rohn hole pattern that can be
installed as a replacement without removing the antennas.

In Aruba I used Create bearings which I think were some type of plastic
inside.  They never froze up like the Rohn bearing I tried.

John KK9A




Richard Smith N6KT wrote
Peter,
Thanks for sharing the PI4CC photos and info. Lots of good engineering. 
I am also interested to see Grant's design of a radial top bearing with 4"
thick UHMW.
73, Rich, N6KT   PJ4K
    On Sunday, May 10, 2020, 07:45:17 AM PDT, Peter <pc2a at pi4cc.nl>
wrote:  
 
 Rich,