At 01:41 PM 7/30/2005, W0UN -- John Brosnahan wrote:
>Nothing beats a chunk of UHMW for a bearing. Been running them
>for MANY years and I know that W7RM used them long before I did.
>
>A one inch thick block has been holding an 8L 15M Yagi in the CO winds
>for better than a decade. And another one has been holding a 6L 20M KLM.
>No rust, no lubrication, easy to make using a table saw and a hole saw.
>
>With just a bit more effort you can support both the horizontal load and
>the vertical load. Maybe I should start making them to sell.
>
>73--John W0UN
And, for the desperately cheap scrounger.. ask restaurants for their old
plastic cutting boards (which are usually UHMW PE). They dispose of them
periodically when they get too beat up to properly clean and
sterilize. Or, you could blow a few bucks at the local discount store and
buy new ones.
Sharp tools needed! If they're dull, they just melt the plastic and it
gums up in a hurry.
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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