« previous next »
Pages: [1]   Go Down

Author Topic: IM F Units - decoder / light board screw size  (Read 817 times)

0 Members and 1 Guest are viewing this topic.

RBrodzinsky

  • Crew
  • *
  • Posts: 1205
  • Gender: Male
  • Respect: +426
IM F Units - decoder / light board screw size
« on: April 24, 2020, 08:13:46 PM »
0
Does anyone happen to know the screw (thread) size which hold the light board / decoder in place for N scale IM F units? I am just curious as to whether I have a proper tap for them (when relocating during a LokSound install) for power pickup. Typically, I’ve ended up using an 00-90, since I have a lot of those on hand, but hate tapping holes that small.
Logged
Rick Brodzinsky
Chief Engineer - JACALAR Railroad
Silicon Valley FreeMo-N

RBrodzinsky

  • Crew
  • *
  • Posts: 1205
  • Gender: Male
  • Respect: +426
Re: IM F Units - decoder / light board screw size
« Reply #1 on: April 25, 2020, 03:41:37 PM »
+1
To answer my own question, and for anyone else who might need to know, they use M2 screws.  This morning I made a little thread tester: took a piece of PCB and drilled/tapped holes for 00-90, 0-80, 1-72 and 2-56 screws. Then opened up a unit, took out one of the screws, and it didn’t fit any of holes. Hmmm, then realized I had some Kato M2 screws, so took one, and it threaded right into the IM.

Have now ordered an M2 tap to have on hand as well.
Logged
Rick Brodzinsky
Chief Engineer - JACALAR Railroad
Silicon Valley FreeMo-N

Cajonpassfan

  • Crew
  • *
  • Posts: 5402
  • Respect: +1978
Re: IM F Units - decoder / light board screw size
« Reply #2 on: April 25, 2020, 03:47:33 PM »
0
I like a man who can answer his own questions.. :D
Otto
Logged
Pages: [1]   Go Up
« previous next »