Jay:
On electrical contact surfaces like these you should use really fine
burnishing material -- like crocus cloth. This is what we used to use on
high current electrical contacts back in the 60's. The idea is not to
"sand", but to"burnish". You want to polish the surface, not sand it. Even
tooth paste (properly cleaned off afterward) is a better burnishing abrasive
than even the "best" sandpaper -- although the abrasive papers available
from 3M for polishing chisel and plane blades (look up "scary sharp") would
be OK for polishing electrical contacts.
Good advise it to use your ignition switch to activate a heavy duty relay to
pass the high current (40 - 60 Amps) to the load, in this case, the starter
or its solenoid.
Tony McNulty
----- Original Message -----
From: "Jay Laifman" <jay.laifman@gmail.com>
To: <tigers@autox.team.net>
Sent: Saturday, May 18, 2013 9:46 AM
Subject: [Tigers] Ignition Switch
>I pulled apart my ignition switch. It was pretty easy. As indicated, just
> pry out two of the points on the can that are pressed in, hold towel to
> finger
> to stop bleeding from screwdriver slipping out of indentation point and
> into
> the finger, put switch in vice, lightly clamping around nut, and finish
> last
> indentation point.
>
> Put in key, press ice pick in hole in side to release lock barrel.
>
> Pull apart.
>
> The switch is much more beefy than I expected. It has a strong spring and
> is
> built of large, thick metal for contacts. I'm actually kind of surprised
> that
> it has any issue. But, I've cleaned it up and sanded all the contacts. I
> basically put a piece of fine sandpaper in between each of the three
> contact
> points and rotated the sandpaper back and forth, and rotated the contact
> to
> each of the three positions to get each one. This probably makes no sense
> unless you have one open in your hands. I was thinking of dremel, but
> none of
> my attachments are small enough to fit in there.
>
> I'm also cleaning and sanding the tabs out the back that the wires attach
> to.
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