[Amps] Conductive Grease

[EP Swynar]

Hi Guys,

I recall some 25 years ago that the tool makers in General Motors where I
worked used castor oil exclusively on any electro-mechanical devices they
worked on...

I apply it periodically on the "slider" of my roller inductors, as well as
on the bearings of variable capacitors here...it DOES get a tad "firm" &
sticky over time, but my experience here has been that this time span is in
terms of YEARS. A light swipe with a rag wetted with rubbing alcohol,
followed by another application of the oil, does the trick for me...

~73~ Eddy VE3CUI - VE3XZ


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----- Original Message ----- 
From: "Roger" <sub1 at rogerhalstead.com>
To: "Harold Mandel" <hmandel at barantelecom.com>; <Amps at contesting.com>
Sent: Monday, November 26, 2007 9:12 AM
Subject: Re: [Amps] Conductive Grease


> I use "Moly" for bearings in rotators as well as Hardwood thrust bearings.
>
> 73
>
> Roger (K8RI)
>
>
> > The question of a suitable grease for roller
> > inductor parts came up in this reflector
> > about one year ago.
> >
> > The material called molybdenum disulphide
> > grease was found to afford the best conductivity
> > while retaining a good lubrication property.
> >
> > This factor made it more desirable for moving
> > part lubrication than Cool-Ohm silver grease,
> > which is a suspension of metallic silver in
> > petroleum media.
> >
> > IBM was using the moly grease in card punches
> > many years ago, as was Bell Telephone using it in
> > the lubrication of stepper relays, also many years ago.
> >
> > Hal Mandel
> > W4HBM
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