[TowerTalk] Noob question re: Thrust Bearings

[Richard Smith]

 Hi Grant,
I am also interested in your concept of a UV resistant UHMW radial top bearing. I am part of a team that is building a station in the Caribbean, and am considering trying a non-metal bearing approach. Do you have a sketch or drawing that you might share?
73, Rich, N6KT   PJ4K
    On Sunday, May 10, 2020, 06:01:51 AM PDT, Art Greenberg <art at artg.tv> wrote:  
 
 > My choice is a UV resistant UHMW radial top bearings for low cost, no 
> maintenance, long life, and low friction.  A 6x6x4" thick block ($47) is 
> what I made for the 3" mast radial bearing with 500# loading.  In 
> perfect condition after 6 years.

Grant,

I'm curious about this. Some questions:

- How did you drill the hole for the mast?

- How much oversize? I imagine its not very critical, is that true?

- Is any particular color better with respect to UV and other environmental exposures?

Thanks, and 73.

-- 
Art Greenberg
WA2LLN
art at artg.tv
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