[AT] Make repairs or payments

[Ron Cook]

True enough, Gene.  However my burnishing tool is called a platinum file.:-)

Necessary tool when working on my old magnetos. I am sure those are 
still platinum contacts.  Radials are not very new and I am not out of 
WWII surplus yet.

I actually had to make a point set for the distributor on one of my 
Wisconsin engines I use when I could no longer buy a replacement set.  
Really was not that hard to do but was time consuming.  It is currently 
in line for the solid state change as soon as I have time.  I had to buy 
a new distributor as a solid state version was offered back in the late 
seventies when this engine was new and that distributor is still 
available.  Just expensive.  It is currently powering my log splitter.

Ron Cook, Salix, IA


On 1/30/2018 10:27 AM, Gene Dotson wrote:
>      The favored material for point contacts made in the 1950-1970 was
> tungsten. Tungsten is the material used in light bulbs. Good conductivity
> and resistant to burning and pitting. Tungsten during an inactive period
> developes tungsten oxide, a thin hard coating and nonconductive. They should
> be cleaned with a contact burnishing tool and not sand paper. This
> burnishing tool leaves a very fine smooth finish and removes very little of
> the parent contact material. Grant is right on the cheapening of the
> materials of both the contact and spring material.
>
>                      Gene
>