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,
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|