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@thepoint.net>
To: "Jerry K3BZ" <k3bz@arrl.net>
Cc: "(Reflector) TowerTalk" <towertalk@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@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@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
|