Silver contacts arrived today.
Looked the situation over and decided the shank was too small to thread to 8-32.
I already knew that, but wanted to make sure the sellers dimensions were correct, yep spot on.
Threaded to 6-32 and mulled over how to attach that to an 8-32 sex screw.
Idea, how about a Helicoil?
Googlefu showed that was not going to work.
Idea, how about a home made Helicoil?
Wrapped 30 gauge Kanthal around threads but not enough.
Ended up wrapping 24 gauge Kanthal around threads and that worked good.
So good in fact that it stayed in the sex screw just like a Helicoil would.
Next, to remove that stubborn brass screw on the 510 center pin.
Whew boy, that was a 2 hour struggle but I finally licked it.
CA had penetrated all the way through the threads and into the threads of the nut below.
Thank goodness I asked for a SS center pin cause if it was brass I would have snapped it in a heart beat.
Not being a boy scout I didn't have any thin copper like I had planned on getting and forgot.
Went to the garage and got another .010 brass feeler gauge out of another set.
Cut it up into the correct shape and drilled it to make a more appropriate bypass shim than my makeshift from the other day.
Had to install a thin washer under the shim due to the fact I couldn't thread the contact shaft all the way to the bottom of the contact head.
Lightly coated the contact surfaces with Noalox and installed.
Made a really wimpy spring out of the lightest spring I could find since the ring magnets have not shown up yet.
Double check to make sure nothing is shorted with atty on.
After getting everything back together a new problem presented itself.
The SX30's are too long without modifying the bottom pin.
(I plan on doing this later with another silver contact but no time tonight)
Idea, remove nylon washer.
Not enough, so insert flat top LG and Bob's your Uncle!
0.14V total drop of which .08V is from battery internal resistance and .04 is from fuse resistance.
No Noalox on silver contact, so we shall see how it holds up.
Previous picture of body modification: