Re: [amsat-bb] Silicone grease on rotor pots

[Jesse Morris <w4mvb@xxxxxxxx>]

Hi Roy,
Yes indeed!  Now that you mention it I seem to remember that there two
(at least) kinds of Dow Corning - conducting and non-conducting!
73's de Jess - W4MVB

On Tue, 10 Jul 2001 13:38:56 +0000 rdwelch@swbell.net writes:
>Be very sure that any silicone grease is lubricating grease.  Some are 
>not.
>
>Don DeJarnette wrote:
>> 
>> I purchased my GE Silicone Grease from Fair Radio, a surplus 
>electronics
>> company.
>> 
>> http://www.fairradio.com/
>> 
>> Have not checked to see if they continue to have it in stock.
>> 
>> 73 de Don KC4YRT
>> 
>> ----- Original Message -----
>> From: Jesse Morris <w4mvb@juno.com>
>> To: <W10191@motorola.com>
>> Cc: <amsat-bb@AMSAT.Org>
>> Sent: Monday, July 09, 2001 7:41 PM
>> Subject: Re: [amsat-bb] Silicone grease on rotor pots
>> 
>> > Hi Wayne,
>> >
>> > I was the one who posed the item about the use of silicone grease 
>on the
>> > rotor control pot. My azimuth rotor is an old CDE TR-44 and has 
>been back
>> > up for about two years now with the grease on the pot and it is 
>still in
>> > good shape. I have only one spot at SSE that is bad and it was bad 
>when I
>> > got it up.
>> >
>> > You do have take the "bell" top off the rotor to put the grease on 
>but
>> > you have to do that anyway if you are going to do anything else to 
>it.  I
>> > first cleaned the pot (which was almost new) with alcohol, put a 
>small
>> > amount of Detoxit on it and then coated the winding with a very 
>thin
>> > layer of the grease.  I guess the wiper tension gets through the 
>grease.
>> > I think the grease keeps the moisture out of the windings of the 
>pot and
>> > keeps it from oxidizing or corroding.
>> >
>> > I remember this grease being originally was made by Dow Corning 
>and I
>> > think it had a designation of DC-3 or DC-4.  I have always called 
>it Dow
>> > Corning gut the stuff that I have now is not made by them.  The 
>tube I
>> > have (which I've had for maybe 8 or 10 years) has a military stock 
>number
>> > on it and is listed as "Silicone Compound - General Electric G624" 
> It
>> > was made by R.H.Carlson Co. in Greenwich, CT in 1990.  I have no 
>Idea
>> > where I got it. ( I probably wouldn't tell if I did know!)
>> >
>> > Hope this helps.
>> >
>> > 73's de Jess - W4MVB
>> > ----
>> > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
>> > To unsubscribe, send "unsubscribe amsat-bb" to 
>Majordomo@amsat.org
>> >
>> >
>> 
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>
>-- 
>73, Roy
>
>Internet: w0sl@amsat.org
>Home Page: http://home.swbell.net/rdwelch
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