[TowerTalk] Above the Thrust Bearing

[Don Havlicek]

Jim,
He wants something to fit INSIDE that collar.
UHMW sheet isn't flexible enough for that task.
The Teflon sheet [about 3-4 mil] will be perfect  for his task, and 
require NO machining.
Don
N8DE

Jim Lux wrote:
> Don't bother with Teflon... use High density (UHMW) polyethylene cutting
> boards...  Less than $10 at your local discount store.. Very good dielectric
> properties, easy to cut (make sure that saw is SHARP), and almost as low a
> friction coefficient as PTFE.
> Unless you were planning to heat your antenna up hot enough where the PE
> starts to flow....?
> 
> ----- Original Message -----
> From: "Don Havlicek" <n8de at thepoint.net>
> To: "Jerry K3BZ" <k3bz at arrl.net>
> Cc: "(Reflector) TowerTalk" <towertalk at contesting.com>
> Sent: Monday, April 07, 2003 6:17 PM
> Subject: Re: [TowerTalk] Above the Thrust Bearing
> 
> 
> 
>>Jerry,
>>Get  some Teflon sheet and cut a piece to fit.  Should last a lifetime.
>>Don
>>N8DE
>>
>>Jerry K3BZ wrote:
>>
>>>I've received several good comments and ideas, thanks. What I'm really
>>>concerned about is the aluminum mast and the aluminum tower sleeve
>>
> wearing
> 
>>>away slowly from metal-to-metal contact. But grease isn't the only way
>>
> to
> 
>>>keep them from actually touching.  What about some sort of "bushing" to
>>
> fit
> 
>>>between the mast and the sleeve?
>>>
>>>I was thinking of a section of thin-wall pvc of appropriate diameter and
>>>wall thickness, sliced length-wise and inserted betwen the mast and
>>
> sleeve
> 
>>>on opposite sides of the mast, then clamped to the mast above and below
>>
> the
> 
>>>sleeve. The idea would be for the pvc to be sacrificed and replaced
>>
> every
> 
>>>few years as necessary. I'm no engineer and I don't even play one on TV,
>>
> so
> 
>>>any comments from those more talented than I?
>>>Jerry K3BZ
>>>
>>>
>>>
>>>_______________________________________________
>>>
>>>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.
> 
>>>_______________________________________________
>>>TowerTalk mailing list
>>>TowerTalk at contesting.com
>>>http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>>
>>
>>_______________________________________________
>>
>>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.
> 
>>_______________________________________________
>>TowerTalk mailing list
>>TowerTalk at contesting.com
>>http://lists.contesting.com/mailman/listinfo/towertalk
> 
> 
>