[Amps] conductive grease for roller inductor

[DAVE WHITE]

Perhaps try petroleum jelly?  Thids is sold under the trade name "Vaseline" here in the UK. It's commonly used on car battery terminals as it's (a) conductive (at DC, I don't know about RF) (b) corrosion prevention and (c) a lubricant

Dave G0OIL

--- On Thu, 22/11/12, Eddy Swynar <deswynar at xplornet.ca> wrote:

From: Eddy Swynar <deswynar at xplornet.ca>
Subject: Re: [Amps] conductive grease for roller inductor
To: "Ralph Young" <ralry at chartertn.net>
Cc: amps at contesting.com
Date: Thursday, 22 November, 2012, 18:51


On 2012-11-21, at 2:15 PM, Ralph Young wrote:

> I have a Nye-Viking tuner with their home made roller inductor.   The roller
> has seized up on the shaft that guides it along the inductor.   They used
> some sort of conductive grease on the shaft and a few other places on the
> inductor assembly to improve contact.   Does anyone have a source for a
> conductive grease I can use on the roller once I get it all apart and freed
> up?
> 


Hi Ralph,

Once you get that puppy free & loose of its moorings, lube any & all contact surfaces in the future with ordinary CASTOR OIL...

That's what I do here with my THREE roller inductors that I employ in two HB transmatches, & a HB linear amplifier. Don't go overboard with the stuff---use just enough to coat the surfaces smoothly, preferably after a complete pass, or to, of the mechanism after you've oiled it.

The maintenance & tooling department at GM in Oshawa used to do the castor oil trick on ALL of their electro-mechanical devices back in the day---and it works, too, but you'll probably have to re-visit the device after a couple of years, or so, to "freshen" it up.

~73~ de Eddy VE3CUI - VE3XZ

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