[TowerTalk] Yaesu GS-065 thrust bearing

[David Robbins]

I have a tb-3 that has been in the air for almost 30 years now, has outlived several rotors, a bunch of antennas, and a set of guy wires... and I haven't looked at it since I put it up there... it just keeps on turning.  I have several others on different towers that have been up there 15 to 20 years that have never been touched either.  just how old are these tb-3's that are requiring all this work???  have they been used in a salt spray environment?


Jun 2, 2014 01:03:10 PM, charlie at thegallos.com wrote:

Exactly what I'd do if I needed to rebuild a thrust bearing, unless I could get some free torlon or vespel (haha, I'm funny, those are crazy expensive and overkill)

Low rotation rate, shock loaded, out in the weather, where they will receive little in the way of maintenance is the place where engineering plastics like nylatron gsm shine. Heck, I can't see why any tower thrust bearing mfg would do anything else except to market to folks who say "ball bearings have to be better than PLASTIC" 

-- 
73 de KG2V
Charlie

> On Jun 2, 2014, at 12:41 PM, George Dubovsky wrote:
> 
> I think I've mentioned it before on this forum, but I converted my TB-3
> thrust bearings over to thrust bushings by machining them to accept inserts
> made from a dry lubricant-loaded composite, Nylatron GSM. 
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