[AMRadio] Squeaky roller inductor

EP Swynar gswynar at durham.net
Sat Feb 3 07:59:04 EST 2007

Hi Brian,

The trades guys in the toolroom at General Motors (Oshawa) swore by the use
of CASTOR OIL on any & all electro-mechanical devices in the shop...I took
this to mean that the stuff would work well on the roller inductors used in
my transmatch & kilowatt linear, and I have NOT been disappointed.

The only catch is that you have to re-lube about every 3-5 years, or
so...but that's certainly no big deal.

BTW, use the ORDINARY castor oil --- none of that fancy flavoured stuff they
sell nowadays...and do NOT go overboard in its use (as with Brylcream, "...A
little dab'll do ya!").

~73~ Edy VE3CUI - VE3XZ

----- Original Message ----- 
From: "A.R.S. - W5AMI" <ars.w5ami at gmail.com>
To: "Discussion of AM Radio in the Amateur Service"
<amradio at mailman.qth.net>
Sent: Friday, February 02, 2007 9:33 PM
Subject: [AMRadio] Squeaky roller inductor

> I've got a rig that has a squeaky roller inductor in the tank circuit
> and would love to quiet it down, not to mention have it turn a bit
> smoother.  Does anyone have any ideas on some sort of HV lubricant
> that could be used in this part of the circuit without any sort of ill
> effects?  Without looking, I'm pretty sure there is no DC on the
> inductor, but surely a lot of RF voltage with an 3cx1500 final.
> I've been reluctant to try anything...
> 73
> Brian / w5ami
> -- 
> Suburbia is where the developer bulldozes out the trees, then names
> the streets after them. - Bill Vaughan
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