Next, I use a #80 drill bit to drill holes for sound egress in
the fan grille at the rear of the shell. I drilled holes between
every other slat in the grille. The holes are so small that you
don’t notice them after they are drilled, particularly after I
dry-brush the fan with some grimy black paint, but they let
out a lot of air [17].
Frame preparation
In order to To accommodate the speaker and the decoder, you
will have to mill the frame a bit. Photo [18] shows the areas, in
black, that need to be milled off each side of the frame.
Be VERY careful when cutting/milling around the motor mount
hole at the top of the frame and around the cutout for the
15
15. The light gray area is where excess material was
removed.
16
16. Test-fit of the decoder.
N scale sound - 6
17
17. The holes, from the inside of the shell, to let the
sound out.
MRH-Dec 2014
