Re: (ET) Springs on the tiller

["The Nauglers" <snaugler earthlink net>]

Chris,

Larry is right, you want an electrical varnish.  GE makes one with the 
trade
name of Glyptal.  Glyptal may be hard to find, but other companies also 
make
"Electrical Insulating Varnish."  You can buy "Electrical Insulating 
Varnish
from both McMaster Carr or Grainger, and motor rebuilding shops usually 
have
some.  These non GE varnishes are class F insulators which exceeds what is
needed for our GE motors.  There is also a lower rated class B, which you
don't want, and a class H, which I doubt you'll be able to find.  (Don't 
ask
me what happened to classes A, C, D, E, or G.)  The class refers to
temperature resistance and dielectric strength, which in this case means 
the
ability to insulate against high voltages between adjacent conductors.

POR 15 will have three problems:

1.  It does not have as high a temperature rating as a true electrical
varnish.
2.  It does not have as high a dielectric strength
3.  It is higher in viscosity and won't get into nooks and crannies unless
you thin it.
    (Doesn't POR 15 require a special thinner?)

Like Larry, I don't hold out much hope.  But if you are going to try you'll
have a better chance of success if you use the right insualting varnish.

A bit of internal combustion trivia involving Glyptal.  High performance
engine builders would coat cast iron engine blocks on the inside everywhere
except cylinders and bearing surfaces.  It would seem that no matter how
well you thought you cleaned casting sand out of the block some would 
always
come out.  Sometimes would get past the filter and damage the engine.
Glytal would glue the sand to the cast iron, and had such a high 
temperature
rating and such good oil resistance, the glue job was permanent.

Steve Naugler
snaugler earthlink net

----- Original Message ----- 
From: "Elie, Larry (L.D.)" <lelie ford com>
To: "Chris Zach" <czach computer org>; "Tom Coate" <tcoate coate org>
Cc: "Elec-trak list" <elec-trak cosmos phy tufts edu>
Sent: Monday, November 22, 2004 3:24 PM
Subject: RE: (ET) Springs on the tiller


POR-15 is too thick; you want what is known as 'GE Varnish'.  I don't hold
out too much hope.

Larry Elie