Re: [Amps] conductive grease for roller inductor

[Pete Smith N4ZR <n4zr@contesting.com>]

CAIG Laboratories makes a series of contact cleaning solutions and 
lubricants that are non-conductive but work quickly to enhance 
conduction through switch and connector contacts.  I see no reason why 
they wouldn't work on a roller inductor without the risk of shorting 
turns. I've used them for years on some flakey Jones plugs and jacks.
73, Pete N4ZR
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On 11/23/2012 8:27 AM, DAVE WHITE wrote:
> 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@xplornet.ca> wrote:
>
> From: Eddy Swynar <deswynar@xplornet.ca>
> Subject: Re: [Amps] conductive grease for roller inductor
> To: "Ralph Young" <ralry@chartertn.net>
> Cc: amps@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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