58. MRH14-12-Dec2014-P - page 248

flywheel. Too much cutting here and you’ll cut through the
frame (ask me how I know this).
After you are done, insulate the area of the frame where the
motor contact strips come up to contact the circuit board.  I
use Kapton tape for this.  We won’t be using the circuit board,
so you want to make sure these strips can’t accidentally con-
tact the frame and cause a short.
Photos [20-22] show the cut frame. The speaker will go on
the rear of the frame, and the frame is reassembled with the
motor inside and the Kapton tape insulating the areas around
the motor contact strips.
The last prep step is to cut a small piece of old circuit board to
solder the decoder power pickup wires. 
18
18. The black areas show where the frame needs to
be milled.
N scale sound - 7
Don’t cut to close to the fly-
wheel cutout.
Be careful cutting
around this hole
MRH-Dec 2014
1...,238,239,240,241,242,243,244,245,246,247 249,250,251,252,253,254,255,256,257,258,...315
Powered by FlippingBook