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Re: [TowerTalk] Fw: Lubricating air variable capacitors

To: Tom Rauch <w8ji@contesting.com>
Subject: Re: [TowerTalk] Fw: Lubricating air variable capacitors
From: Bill Coleman <aa4lr@arrl.net>
Date: Fri, 7 Oct 2005 08:28:14 -0400
List-post: <mailto:towertalk@contesting.com>
On Oct 2, 2005, at 7:50 PM, Tom Rauch wrote:

> For what it's worth, I've used WD40 for many many years on
> all sorts of things ... and never had a problem.

WD40 works great as a short-term lubricant. I've used it successfully  
to avoid galling on SS hardware -- but you have to apply it just  
before you tighten or remove the hardware.

The problem with WD40 is that it is terribly volatile. I used it on a  
squeaky door. Two months later, the squeak is back.

LPS 2 or 3 is a better choice. LPS 2 is designed as a lubricant and  
has more waxy components. LPS 3 is a corrosion-inhibitor and is high  
in waxy components. LPS 2 on the squeaky door -- no squeak for years.

> I'd just be
> careful to not rinse out the original grease, and use the
> WD40 to soften it up a bit.

In this application, you're using WD40 as a solvent, to soften up the  
original lubricant. Not as a lubricant itself. Still, I wonder what  
happens in a couple of months when the WD40 evaporates completely.

LPS 2 or 3 are good choices. (And it's made right here in Georgia....)


Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr@arrl.net
Quote: "Not within a thousand years will man ever fly!"
             -- Wilbur Wright, 1901

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